From 0acef818c660dcc8309affecb52aea868bd26a20 Mon Sep 17 00:00:00 2001
From: Andreas Hilbig <andreas.hilbig@hilbigit.com>
Date: Wed, 11 Feb 2026 13:32:28 +0100
Subject: [PATCH 1/2] docs: add TSDoc to core components

- Added detailed JSDoc documentation to all core datasource classes in src/datasources/

- Documented execution logic classes in src/execution/

- Added TSDoc to API utility functions and resolvers in src/api/

- Documented shared models and enums in src/model/
---
 .idea/workspace.xml                           | 47 ++++++----
 .output.txt                                   |  1 +
 ...ample_import_simulated_bt_template.graphql |  2 +-
 src/api/graphql_utils.ts                      |  5 ++
 src/api/resolver_helpers.ts                   | 19 ++++
 src/api/resolvers.ts                          |  5 ++
 .../graphql-params-to-zabbix-output.ts        | 23 +++++
 src/datasources/zabbix-api.ts                 | 37 ++++++++
 src/datasources/zabbix-history.ts             | 36 ++++++++
 src/datasources/zabbix-hostgroups.ts          | 36 ++++++++
 src/datasources/zabbix-hosts.ts               | 71 +++++++++++++++
 src/datasources/zabbix-items.ts               | 12 +++
 src/datasources/zabbix-module.ts              |  7 ++
 src/datasources/zabbix-permissions.ts         | 36 ++++++++
 src/datasources/zabbix-request.ts             | 88 +++++++++++++++++++
 src/datasources/zabbix-script.ts              | 13 +++
 src/datasources/zabbix-templates.ts           | 77 ++++++++++++++++
 src/datasources/zabbix-usergroups.ts          | 42 +++++++++
 src/datasources/zabbix-userroles.ts           | 21 +++++
 src/execution/host_deleter.ts                 | 19 ++++
 src/execution/host_exporter.ts                | 17 ++++
 src/execution/host_importer.ts                | 22 +++++
 src/execution/regression_test_executor.ts     |  9 ++
 src/execution/smoketest_executor.ts           | 12 +++
 src/execution/template_deleter.ts             | 19 ++++
 src/execution/template_importer.ts            | 17 ++++
 src/model/model_enum_values.ts                | 15 ++++
 27 files changed, 689 insertions(+), 19 deletions(-)
 create mode 100644 .output.txt

diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 6696220..df11802 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -6,16 +6,31 @@
   <component name="ChangeListManager">
     <list default="true" id="d7a71994-2699-4ae4-9fd2-ee13b7f33d35" name="Changes" comment="docs: refactor documentation and upgrade to Node.js 24&#10;&#10;This commit upgrades the project to Node.js 24 (LTS) and performs a major refactoring of the documentation to support both advanced users and AI-based automation (MCP).&#10;&#10;Changes:&#10;- Environment &amp; CI/CD:&#10;  - Set Node.js version to &gt;=24 in package.json and .nvmrc.&#10;  - Updated Dockerfile to use Node 24 base image.&#10;  - Updated @types/node to ^24.10.9.&#10;- Documentation:&#10;  - Refactored README.md with comprehensive technical reference, configuration details, and Zabbix-to-GraphQL mapping.&#10;  - Created docs/howtos/cookbook.md with practical recipes for common tasks and AI test generation.&#10;  - Updated docs/howtos/mcp.md to emphasize GraphQL's advantages for AI agents and Model Context Protocol.&#10;  - Added readme.improvement.plan.md to track documentation evolution.&#10;  - Enhanced all how-to guides with improved cross-references and up-to-date information.&#10;- Guidelines:&#10;  - Updated .junie/guidelines.md with Node 24 requirements and enhanced commit message standards (Conventional Commits 1.0.0).&#10;- Infrastructure &amp; Code:&#10;  - Updated docker-compose.yml with Apollo MCP server integration.&#10;  - Refined configuration and schema handling in src/api/ and src/datasources/.&#10;  - Synchronized generated TypeScript types with schema updates.">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/README.md" beforeDir="false" afterPath="$PROJECT_DIR$/README.md" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/docs/howtos/local_development.md" beforeDir="false" afterPath="$PROJECT_DIR$/docs/howtos/local_development.md" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/docs/howtos/maintenance.md" beforeDir="false" afterPath="$PROJECT_DIR$/docs/howtos/maintenance.md" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/roadmap.md" beforeDir="false" afterPath="$PROJECT_DIR$/roadmap.md" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/docs/queries/sample_import_simulated_bt_template.graphql" beforeDir="false" afterPath="$PROJECT_DIR$/docs/queries/sample_import_simulated_bt_template.graphql" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/api/graphql_utils.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/api/graphql_utils.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/api/resolver_helpers.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/api/resolver_helpers.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/api/resolvers.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/api/resolvers.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/datasources/graphql-params-to-zabbix-output.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/datasources/graphql-params-to-zabbix-output.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/datasources/zabbix-api.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/datasources/zabbix-api.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/datasources/zabbix-history.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/datasources/zabbix-history.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/datasources/zabbix-hostgroups.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/datasources/zabbix-hostgroups.ts" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/datasources/zabbix-hosts.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/datasources/zabbix-hosts.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/datasources/zabbix-items.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/datasources/zabbix-items.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/datasources/zabbix-module.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/datasources/zabbix-module.ts" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/datasources/zabbix-permissions.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/datasources/zabbix-permissions.ts" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/datasources/zabbix-request.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/datasources/zabbix-request.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/datasources/zabbix-script.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/datasources/zabbix-script.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/datasources/zabbix-templates.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/datasources/zabbix-templates.ts" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/datasources/zabbix-usergroups.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/datasources/zabbix-usergroups.ts" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/test/history_push.test.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/test/history_push.test.ts" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/test/zabbix_6_0_compatibility.test.ts" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/datasources/zabbix-userroles.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/datasources/zabbix-userroles.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/execution/host_deleter.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/execution/host_deleter.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/execution/host_exporter.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/execution/host_exporter.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/execution/host_importer.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/execution/host_importer.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/execution/regression_test_executor.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/execution/regression_test_executor.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/execution/smoketest_executor.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/execution/smoketest_executor.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/execution/template_deleter.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/execution/template_deleter.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/execution/template_importer.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/execution/template_importer.ts" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/model/model_enum_values.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/model/model_enum_values.ts" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -26,7 +41,7 @@
     <execution />
   </component>
   <component name="EmbeddingIndexingInfo">
-    <option name="cachedIndexableFilesCount" value="172" />
+    <option name="cachedIndexableFilesCount" value="175" />
     <option name="fileBasedEmbeddingIndicesEnabled" value="true" />
   </component>
   <component name="Git.Settings">
@@ -52,13 +67,7 @@
   </component>
   <component name="McpProjectServerCommands">
     <commands />
-    <urls>
-      <McpServerConfigurationProperties>
-        <option name="allowedToolsNames" />
-        <option name="enabled" value="true" />
-        <option name="name" value="zabbix-graphql" />
-      </McpServerConfigurationProperties>
-    </urls>
+    <urls />
   </component>
   <component name="ProblemsViewState">
     <option name="selectedTabId" value="CurrentFile" />
@@ -90,7 +99,7 @@
     "RunOnceActivity.git.unshallow": "true",
     "RunOnceActivity.typescript.service.memoryLimit.init": "true",
     "com.intellij.ml.llm.matterhorn.ej.ui.settings.DefaultModelSelectionForGA.v1": "true",
-    "git-widget-placeholder": "feature-improve-zabbix-version-compatiblity",
+    "git-widget-placeholder": "main",
     "go.import.settings.migrated": "true",
     "javascript.preferred.runtime.type.id": "node",
     "junie.onboarding.icon.badge.shown": "true",
@@ -106,7 +115,7 @@
     "npm.copy-schema.executor": "Run",
     "npm.prod.executor": "Run",
     "npm.test.executor": "Run",
-    "settings.editor.selected.configurable": "junie.mcp",
+    "settings.editor.selected.configurable": "ml.llm.mcp",
     "settings.editor.splitter.proportion": "0.23751687",
     "to.speed.mode.migration.done": "true",
     "ts.external.directory.path": "\\\\wsl.localhost\\Ubuntu\\home\\ahilbig\\git\\vcr\\zabbix-graphql-api\\node_modules\\typescript\\lib",
@@ -227,6 +236,8 @@
       <workItem from="1770129804879" duration="13000" />
       <workItem from="1770129846593" duration="5283000" />
       <workItem from="1770167580486" duration="16982000" />
+      <workItem from="1770799063115" duration="1101000" />
+      <workItem from="1770800423630" duration="4799000" />
     </task>
     <task id="LOCAL-00001" summary="chore: Update IntelliJ workspace settings and add GitHub Actions workflow for Docker deployment">
       <option name="closed" value="true" />
@@ -491,12 +502,12 @@
       <breakpoints>
         <line-breakpoint enabled="true" type="javascript">
           <url>file://$PROJECT_DIR$/src/datasources/zabbix-request.ts</url>
-          <line>135</line>
+          <line>152</line>
           <option name="timeStamp" value="5" />
         </line-breakpoint>
         <line-breakpoint enabled="true" type="javascript">
           <url>file://$PROJECT_DIR$/src/datasources/zabbix-request.ts</url>
-          <line>276</line>
+          <line>338</line>
           <option name="timeStamp" value="6" />
         </line-breakpoint>
       </breakpoints>
diff --git a/.output.txt b/.output.txt
new file mode 100644
index 0000000..18b4226
--- /dev/null
+++ b/.output.txt
@@ -0,0 +1 @@
+{"data":{"runAllRegressionTests":{"success":true,"message":"Regression tests passed successfully","steps":[{"name":"REG-LOC: Locations query argument order","success":true,"message":"Locations query executed without session error"},{"name":"REG-TEMP: Template technical name lookup","success":true,"message":"Template REG_TEMP_o1fedi created and searchable by technical name"},{"name":"REG-HTTP: HTTP Agent URL support","success":true,"message":"Template REG_HTTP_cnbxkf with HTTP Agent item created successfully"},{"name":"REG-MACRO: User Macro assignment","success":true,"message":"Macros successfully assigned to template and host"},{"name":"REG-HOST: Host retrieval and visibility (incl. groups and templates)","success":true,"message":"Host REG_HOST_ngacal retrieved successfully with groups and templates"},{"name":"REG-ITEM-META: Item metadata (preprocessing, units, description, error)","success":true,"message":"Item metadata successfully retrieved including preprocessing and units"},{"name":"REG-OPT: Query Optimization and Skippable Parameters","success":true,"message":"Optimization logic correctly filters output fields and skippable parameters"},{"name":"REG-EMPTY: Empty result handling","success":true,"message":"Correctly returned empty array for non-existent host"},{"name":"REG-DEP: Dependent Items support","success":true,"message":"Template with master and dependent items imported successfully"},{"name":"REG-STATE: State sub-properties retrieval (indirect dependency)","success":true,"message":"State sub-properties correctly trigger item fetching and are available"},{"name":"REG-OPT-NEG: Negative Optimization - items not requested (allDevices)","success":true,"message":"Optimization correctly omits items when neither items nor state are requested"},{"name":"REG-DEV-FILTER: allDevices deviceType filter","success":true,"message":"allDevices correctly filtered out hosts without deviceType tag"},{"name":"REG-PUSH: pushHistory mutation","success":true,"message":"Successfully pushed history data to trapper item"},{"name":"Create Host Group","success":true,"message":"Host group REG_GROUP_l5t5hv created"}]}}}
\ No newline at end of file
diff --git a/docs/queries/sample_import_simulated_bt_template.graphql b/docs/queries/sample_import_simulated_bt_template.graphql
index 59d77db..636a150 100644
--- a/docs/queries/sample_import_simulated_bt_template.graphql
+++ b/docs/queries/sample_import_simulated_bt_template.graphql
@@ -36,7 +36,7 @@ We use the `state.current.json_geojson` key for the trapper item. The `json_` pr
           "type": 2,
           "key": "state.current.json_geojson",
           "value_type": 4,
-          "history": "7d",
+          "history": "31d",
           "description": "Trapper item receiving GeoJSON payloads"
         }
       ]
diff --git a/src/api/graphql_utils.ts b/src/api/graphql_utils.ts
index 8b2aab8..ea988eb 100644
--- a/src/api/graphql_utils.ts
+++ b/src/api/graphql_utils.ts
@@ -1,5 +1,10 @@
 import {FieldNode, GraphQLResolveInfo, InlineFragmentNode} from "graphql";
 
+/**
+ * Extracts the requested fields from a GraphQL resolve info object, including nested fields and fragments.
+ * @param info - The GraphQL resolve info.
+ * @returns An array of strings representing the full paths of the requested fields.
+ */
 export function getRequestedFields(info: GraphQLResolveInfo): string[] {
     if (!info || !info.fieldNodes) return [];
     const fields: string[] = [];
diff --git a/src/api/resolver_helpers.ts b/src/api/resolver_helpers.ts
index 8eaca8b..c7f1a27 100644
--- a/src/api/resolver_helpers.ts
+++ b/src/api/resolver_helpers.ts
@@ -2,6 +2,11 @@ import {isObjectType} from "graphql";
 import {logger} from "../logging/logger.js";
 import {Device, Host} from "../schema/generated/graphql.js";
 
+/**
+ * Checks if a host object is a specialized device.
+ * @param value - The host object to check.
+ * @returns True if the host is a device, false otherwise.
+ */
 export const isDevice = (value: Host | undefined): value is Device => !!(value as Device)?.deviceType;
 /*
     As a default all . - seperators within a key shall be replaced by a Capital letter of the following word
@@ -49,6 +54,13 @@ export function createHierarchicalValueFieldResolver(
     return resolver
 }
 
+/**
+ * Maps Zabbix item values to GraphQL type fields based on the field name.
+ * @param fieldname - The name of the GraphQL field.
+ * @param parent - The parent object containing Zabbix items.
+ * @param objectTypeRequested - Whether the requested field is an object type.
+ * @returns The mapped value or hierarchical object.
+ */
 export function zabbixItemValueSourceFieldMapper(
     fieldname: string,
     parent: {
@@ -76,6 +88,13 @@ export function zabbixItemValueSourceFieldMapper(
     return result;
 }
 
+/**
+ * Maps Zabbix tag values to GraphQL type fields based on the field name.
+ * @param fieldname - The name of the GraphQL field.
+ * @param tags - The array of Zabbix tags.
+ * @param objectTypeRequested - Whether the requested field is an object type.
+ * @returns The mapped value or hierarchical object.
+ */
 export function zabbixTagsValueSourceFieldMapper(
     fieldname: string,
     tags:  [{ tag: string, value: any }],
diff --git a/src/api/resolvers.ts b/src/api/resolvers.ts
index 398587c..1f1ee53 100644
--- a/src/api/resolvers.ts
+++ b/src/api/resolvers.ts
@@ -67,6 +67,11 @@ import {Config} from "../common_utils.js";
 import {GraphqlParamsToNeededZabbixOutput} from "../datasources/graphql-params-to-zabbix-output.js";
 
 
+/**
+ * Creates the GraphQL resolvers for the Zabbix API.
+ * Defines how queries, mutations, and types are resolved by interacting with the Zabbix data sources and execution logic.
+ * @returns The GraphQL resolvers object.
+ */
 export function createResolvers(): Resolvers {
     // @ts-ignore
     // @ts-ignore
diff --git a/src/datasources/graphql-params-to-zabbix-output.ts b/src/datasources/graphql-params-to-zabbix-output.ts
index 4fb1629..e7f2abf 100644
--- a/src/datasources/graphql-params-to-zabbix-output.ts
+++ b/src/datasources/graphql-params-to-zabbix-output.ts
@@ -1,19 +1,42 @@
 import {GraphQLResolveInfo} from "graphql";
 import {getRequestedFields} from "../api/graphql_utils.js";
 
+/**
+ * Helper class to map GraphQL request information to the fields needed from Zabbix.
+ */
 export class GraphqlParamsToNeededZabbixOutput {
+    /**
+     * Maps the requested fields for allHosts query.
+     * @param info - The GraphQL resolve info.
+     * @returns An array of field names.
+     */
     static mapAllHosts(info: GraphQLResolveInfo): string[] {
         return getRequestedFields(info);
     }
 
+    /**
+     * Maps the requested fields for allDevices query.
+     * @param info - The GraphQL resolve info.
+     * @returns An array of field names.
+     */
     static mapAllDevices(info: GraphQLResolveInfo): string[] {
         return getRequestedFields(info);
     }
 
+    /**
+     * Maps the requested fields for allHostGroups query.
+     * @param info - The GraphQL resolve info.
+     * @returns An array of field names.
+     */
     static mapAllHostGroups(info: GraphQLResolveInfo): string[] {
         return getRequestedFields(info);
     }
 
+    /**
+     * Maps the requested fields for templates query.
+     * @param info - The GraphQL resolve info.
+     * @returns An array of field names.
+     */
     static mapTemplates(info: GraphQLResolveInfo): string[] {
         return getRequestedFields(info);
     }
diff --git a/src/datasources/zabbix-api.ts b/src/datasources/zabbix-api.ts
index 1ecaa73..4d515fa 100644
--- a/src/datasources/zabbix-api.ts
+++ b/src/datasources/zabbix-api.ts
@@ -14,10 +14,18 @@ export const zabbixPrivilegeEscalationToken = Config.ZABBIX_PRIVILEGE_ESCALATION
 export const ZABBIX_EDGE_DEVICE_BASE_GROUP = Config.ZABBIX_EDGE_DEVICE_BASE_GROUP || Config.ZABBIX_ROADWORK_BASE_GROUP || "Roadwork"
 export const FIND_ZABBIX_EDGE_DEVICE_BASE_GROUP_PREFIX = new RegExp(`^(${ZABBIX_EDGE_DEVICE_BASE_GROUP})\/`)
 
+/**
+ * Data source for interacting with the Zabbix API.
+ * Extends RESTDataSource to handle JSON-RPC requests to Zabbix.
+ */
 export class ZabbixAPI
     extends RESTDataSource {
     private static readonly MAX_LOG_REQUEST_BODY_LIMIT_LENGTH = 500
 
+    /**
+     * @param baseURL - The base URL of the Zabbix API.
+     * @param config - Optional data source configuration.
+     */
     constructor(public baseURL: string, config?: DataSourceConfig) {
         super(config);
         logger.info("Connecting to Zabbix at url=" + this.baseURL)
@@ -82,6 +90,10 @@ export class ZabbixAPI
 
     private static version: string | undefined
 
+    /**
+     * Retrieves the Zabbix API version.
+     * @returns A promise that resolves to the version string.
+     */
     async getVersion(): Promise<string> {
         if (!ZabbixAPI.version) {
             const response = await this.requestByPath<string>("apiinfo.version")
@@ -94,14 +106,39 @@ export class ZabbixAPI
         return ZabbixAPI.version
     }
 
+    /**
+     * Executes a Zabbix API request.
+     * @param zabbixRequest - The request object to execute.
+     * @param args - The parsed arguments for the request.
+     * @param throwApiError - Whether to throw an error if the request fails (default: true).
+     * @param output - The list of fields to return.
+     * @returns A promise that resolves to the result or an error result.
+     */
     async executeRequest<T extends ZabbixResult, A extends ParsedArgs>(zabbixRequest: ZabbixRequest<T, A>, args?: A, throwApiError: boolean = true, output?: string[]): Promise<T | ZabbixErrorResult> {
         return throwApiError ? zabbixRequest.executeRequestThrowError(this, args, output) : zabbixRequest.executeRequestReturnError(this, args, output);
     }
 
+    /**
+     * Executes a Zabbix API request by its method path.
+     * @param path - The Zabbix API method path.
+     * @param args - The parsed arguments for the request.
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookies - Optional session cookies.
+     * @param throwApiError - Whether to throw an error if the request fails (default: true).
+     * @param output - The list of fields to return.
+     * @returns A promise that resolves to the result or an error result.
+     */
     async requestByPath<T extends ZabbixResult, A extends ParsedArgs = ParsedArgs>(path: string, args?: A, authToken?: string | null, cookies?: string, throwApiError: boolean = true, output?: string[]) {
         return this.executeRequest<T, A>(new ZabbixRequest<T>(path, authToken, cookies), args, throwApiError, output);
     }
 
+    /**
+     * Retrieves locations from host inventory.
+     * @param args - The parsed arguments for filtering locations.
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookies - Optional session cookies.
+     * @returns A promise that resolves to an array of location objects.
+     */
     async getLocations(args?: ParsedArgs, authToken?: string, cookies?: string) {
         const hosts_promise = this.requestByPath("host.get", args, authToken, cookies);
         return hosts_promise.then(response => {
diff --git a/src/datasources/zabbix-history.ts b/src/datasources/zabbix-history.ts
index db57459..d89bec0 100644
--- a/src/datasources/zabbix-history.ts
+++ b/src/datasources/zabbix-history.ts
@@ -16,10 +16,23 @@ export interface ZabbixExportValue extends ZabbixValue, ZabbixResult {
     itemid?: string
 }
 
+/**
+ * Parameters for querying history from Zabbix.
+ */
 export class ZabbixHistoryGetParams extends ParsedArgs {
     time_from_ms: number | undefined
     time_till_ms: number | undefined
 
+    /**
+     * @param itemids - The IDs of the items to query history for.
+     * @param output - The list of fields to return.
+     * @param limit - The maximum number of values to return.
+     * @param history - The storage item type (e.g., float, integer, character, text, log).
+     * @param time_from - The start time for the history query.
+     * @param time_until - The end time for the history query.
+     * @param sortfield - The field to sort the results by.
+     * @param sortorder - The sort order (ASC or DESC).
+     */
     constructor(public itemids: number[] | number | string | string[],
                 public output: string[] = ["value", "itemid", "clock", "ns"],
                 public limit: number | null = Array.isArray(itemids) ? itemids.length : 1,
@@ -35,7 +48,14 @@ export class ZabbixHistoryGetParams extends ParsedArgs {
     }
 }
 
+/**
+ * Request to query history from Zabbix.
+ */
 export class ZabbixQueryHistoryRequest extends ZabbixRequest<ZabbixExportValue[], ZabbixHistoryGetParams> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("history.get", authToken, cookie);
     }
@@ -65,7 +85,16 @@ export interface ZabbixHistoryPushResult {
     error?: ApiError | string[]
 }
 
+/**
+ * Parameters for pushing history to Zabbix.
+ */
 export class ZabbixHistoryPushParams extends ParsedArgs {
+    /**
+     * @param values - The history values to push.
+     * @param itemid - Optional item ID to push history for.
+     * @param key - Optional item key to push history for.
+     * @param host - Optional host name to push history for.
+     */
     constructor(public values: ZabbixHistoryPushInput[], public itemid?: string,
                 public key?: string,
                 public host?: string,) {
@@ -73,7 +102,14 @@ export class ZabbixHistoryPushParams extends ParsedArgs {
     }
 }
 
+/**
+ * Request to push history to Zabbix.
+ */
 export class ZabbixHistoryPushRequest extends ZabbixRequest<ZabbixHistoryPushResult, ZabbixHistoryPushParams> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string) {
         super("history.push", authToken, cookie);
     }
diff --git a/src/datasources/zabbix-hostgroups.ts b/src/datasources/zabbix-hostgroups.ts
index c2f3b6b..9960577 100644
--- a/src/datasources/zabbix-hostgroups.ts
+++ b/src/datasources/zabbix-hostgroups.ts
@@ -21,15 +21,28 @@ const hostGroupReadWritePermissions = {
         }]
 }
 
+/**
+ * Request to create a host group in Zabbix.
+ */
 export class ZabbixCreateHostGroupRequest extends ZabbixRequestWithPermissions<CreateHostGroupResult> {
+    /**
+     * @param _authToken - Ignored, as privilege escalation token is used.
+     * @param cookie - Optional session cookie.
+     */
     constructor(_authToken?: string | null, cookie?: string) {
         super("hostgroup.create", zabbixPrivilegeEscalationToken, cookie, hostGroupReadWritePermissions);
     }
 }
 
+/**
+ * Parameters for querying host groups from Zabbix.
+ */
 export class ZabbixQueryHostgroupsParams extends ParsedArgs {
     search_name: string | undefined
 
+    /**
+     * @param args - The raw arguments.
+     */
     constructor(args?: any) {
         super(args);
         if ("search_name" in args && typeof (args.search_name) == "string") {
@@ -45,8 +58,16 @@ export type ZabbixQueryHostgroupsResult = {
     uuid: string
 }
 
+/**
+ * Request to query host groups from Zabbix.
+ */
 export class ZabbixQueryHostgroupsRequest extends ZabbixRequestWithPermissions<ZabbixQueryHostgroupsResult[],
     ZabbixQueryHostgroupsParams> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @param hostGroupReadPermissions - Optional host group read permissions.
+     */
     constructor(authToken?: string | null, cookie?: string | null, hostGroupReadPermissions?: any) {
         super("hostgroup.get", authToken, cookie, hostGroupReadPermissions,);
     }
@@ -69,7 +90,14 @@ export class ZabbixQueryHostgroupsRequest extends ZabbixRequestWithPermissions<Z
 
 }
 
+/**
+ * Request to delete host groups in Zabbix.
+ */
 export class ZabbixDeleteHostGroupsRequest extends ZabbixRequestWithPermissions<{ groupids: string[] }> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("hostgroup.delete", authToken, cookie, hostGroupReadWritePermissions);
     }
@@ -84,6 +112,14 @@ export class GroupHelper {
         return groupName.replace(FIND_ZABBIX_EDGE_DEVICE_BASE_GROUP_PREFIX, "")
     }
 
+    /**
+     * Finds host group IDs by their names.
+     * @param groupNames - The names of the host groups to find.
+     * @param zabbixApi - The Zabbix API instance.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to an array of host group IDs.
+     */
     public static async findHostGroupIdsByName(groupNames: string[], zabbixApi: ZabbixAPI, zabbixAuthToken?: string, cookie?: string) {
         let result: number[] = []
         for (let groupName of groupNames) {
diff --git a/src/datasources/zabbix-hosts.ts b/src/datasources/zabbix-hosts.ts
index 8b5cb02..06a7284 100644
--- a/src/datasources/zabbix-hosts.ts
+++ b/src/datasources/zabbix-hosts.ts
@@ -12,9 +12,17 @@ import {ZabbixHistoryGetParams, ZabbixQueryHistoryRequest} from "./zabbix-histor
 import {ZabbixQueryItemRequest} from "./zabbix-templates.js";
 
 
+/**
+ * Generic request to query hosts from Zabbix.
+ */
 export class ZabbixQueryHostsGenericRequest<T extends ZabbixResult, A extends ParsedArgs = ParsedArgs> extends ZabbixRequest<T, A> {
     public static PATH = "host.get";
 
+    /**
+     * @param path - The Zabbix API method path.
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(path: string, authToken?: string | null, cookie?: string | null) {
         super(path, authToken, cookie);
         this.skippableZabbixParams.set("selectParentTemplates", "parentTemplates");
@@ -25,10 +33,23 @@ export class ZabbixQueryHostsGenericRequest<T extends ZabbixResult, A extends Pa
         this.impliedFields.set("hostType", ["tags"]);
     }
 
+    /**
+     * Executes the request and returns the result or an error.
+     * @param zabbixAPI - The Zabbix API instance.
+     * @param args - The parsed arguments for the request.
+     * @param output - The list of fields to return.
+     * @returns A promise that resolves to the result or an error.
+     */
     async executeRequestReturnError(zabbixAPI: ZabbixAPI, args?: A, output?: string[]): Promise<ZabbixErrorResult | T> {
         return await super.executeRequestReturnError(zabbixAPI, args, output);
     }
 
+    /**
+     * Creates the parameters for the Zabbix API request.
+     * @param args - The parsed arguments for the request.
+     * @param output - The list of fields to return.
+     * @returns The Zabbix parameters.
+     */
     createZabbixParams(args?: A, output?: string[]): ZabbixParams {
         const params: any = {
             ...super.createZabbixParams(args),
@@ -58,9 +79,16 @@ export class ZabbixQueryHostsGenericRequest<T extends ZabbixResult, A extends Pa
 }
 
 
+/**
+ * Request to query host metadata from Zabbix.
+ */
 export class ZabbixQueryHostsMetaRequest extends ZabbixQueryHostsGenericRequest<Host[]> {
     public static PATH = "host.get.meta";
 
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super(ZabbixQueryHostsMetaRequest.PATH, authToken, cookie);
     }
@@ -74,7 +102,15 @@ export class ZabbixQueryHostsMetaRequest extends ZabbixQueryHostsGenericRequest<
 }
 
 
+/**
+ * Generic request to query hosts with their items from Zabbix.
+ */
 export class ZabbixQueryHostsGenericRequestWithItems<T extends ZabbixResult, A extends ParsedArgs = ParsedArgs> extends ZabbixQueryHostsGenericRequest<T, A> {
+    /**
+     * @param path - The Zabbix API method path.
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(path: string, authToken?: string | null, cookie?: string) {
         super(path, authToken, cookie);
         this.skippableZabbixParams.set("selectItems", "items");
@@ -167,7 +203,15 @@ export class ZabbixQueryHostsGenericRequestWithItems<T extends ZabbixResult, A e
     }
 }
 
+/**
+ * Generic request to query hosts with their items and inventory from Zabbix.
+ */
 export class ZabbixQueryHostsGenericRequestWithItemsAndInventory<T extends ZabbixResult, A extends ParsedArgs = ParsedArgs> extends ZabbixQueryHostsGenericRequestWithItems<T, A> {
+    /**
+     * @param path - The Zabbix API method path.
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(path: string, authToken?: string | null, cookie?: string) {
         super(path, authToken, cookie);
         this.skippableZabbixParams.set("selectInventory", "inventory");
@@ -189,7 +233,13 @@ export class ZabbixQueryHostsRequestWithItemsAndInventory extends ZabbixQueryHos
     }
 }
 
+/**
+ * Arguments for querying devices.
+ */
 export class ZabbixQueryDevicesArgs extends ParsedArgs {
+    /**
+     * @param args - The raw arguments.
+     */
     constructor(public args?: any) {
         if (!args?.tag_deviceType ||
             (Array.isArray(args.tag_deviceType) && !args.tag_deviceType.length)) {
@@ -199,7 +249,14 @@ export class ZabbixQueryDevicesArgs extends ParsedArgs {
     }
 }
 
+/**
+ * Request to query devices from Zabbix.
+ */
 export class ZabbixQueryDevices  extends ZabbixQueryHostsGenericRequestWithItemsAndInventory<Device[], ZabbixQueryDevicesArgs> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string) {
         super("host.get.with_items", authToken, cookie);
     }
@@ -272,7 +329,14 @@ class ZabbixCreateHostParams implements ZabbixParams {
 }
 
 
+/**
+ * Request to create a host in Zabbix.
+ */
 export class ZabbixCreateHostRequest extends ZabbixRequest<CreateHostResponse> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string) {
         super("host.create", authToken, cookie);
     }
@@ -286,7 +350,14 @@ export class ZabbixCreateHostRequest extends ZabbixRequest<CreateHostResponse> {
     }
 }
 
+/**
+ * Request to delete hosts in Zabbix.
+ */
 export class ZabbixDeleteHostsRequest extends ZabbixRequest<{ hostids: string[] }> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("host.delete", authToken, cookie);
     }
diff --git a/src/datasources/zabbix-items.ts b/src/datasources/zabbix-items.ts
index 1ab4810..8f4fe37 100644
--- a/src/datasources/zabbix-items.ts
+++ b/src/datasources/zabbix-items.ts
@@ -2,11 +2,23 @@ import {ParsedArgs, ZabbixRequest} from "./zabbix-request.js";
 import {ZabbixItem} from "../schema/generated/graphql.js";
 
 
+/**
+ * Request to query items from Zabbix.
+ */
 export class ZabbixQueryItemsRequest extends ZabbixRequest<ZabbixItem[]> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string) {
         super("item.get", authToken, cookie);
     }
 
+    /**
+     * Creates the parameters for the Zabbix API request.
+     * @param args - The parsed arguments for the request.
+     * @returns The Zabbix parameters.
+     */
     createZabbixParams(args?: ParsedArgs) {
         return {
             "templated": false,
diff --git a/src/datasources/zabbix-module.ts b/src/datasources/zabbix-module.ts
index b1b950c..539728f 100644
--- a/src/datasources/zabbix-module.ts
+++ b/src/datasources/zabbix-module.ts
@@ -1,7 +1,14 @@
 import {ParsedArgs, ZabbixParams, ZabbixRequest} from "./zabbix-request.js";
 import {UserRoleModule} from "../schema/generated/graphql.js";
 
+/**
+ * Request to query modules from Zabbix.
+ */
 export class ZabbixQueryModulesRequest extends ZabbixRequest<UserRoleModule[]> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("module.get", authToken, cookie);
     }
diff --git a/src/datasources/zabbix-permissions.ts b/src/datasources/zabbix-permissions.ts
index b830521..c895060 100644
--- a/src/datasources/zabbix-permissions.ts
+++ b/src/datasources/zabbix-permissions.ts
@@ -5,18 +5,38 @@ import {ApiErrorCode, PermissionNumber} from "../model/model_enum_values.js";
 import {Config} from "../common_utils.js";
 
 
+/**
+ * Base class for Zabbix requests that require specific user permissions.
+ */
 export class ZabbixRequestWithPermissions<T extends ZabbixResult, A extends ParsedArgs = ParsedArgs> extends ZabbixRequest<T, A> {
 
+    /**
+     * @param path - The Zabbix API method path.
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @param permissionsNeeded - The permissions required to execute this request.
+     */
     constructor(public path: string, public authToken?: string | null, public cookie?: string | null,
         protected permissionsNeeded?: QueryHasPermissionsArgs) {
         super(path, authToken, cookie);
     }
+    /**
+     * Prepares the request by checking user permissions.
+     * @param zabbixAPI - The Zabbix API instance.
+     * @param _args - The parsed arguments for the request.
+     * @returns A promise that resolves to the result or an error if permissions are missing.
+     */
     async prepare(zabbixAPI: ZabbixAPI, _args?: A): Promise<T | ZabbixErrorResult | undefined> {
         // If prepare returns something else than undefined, the execution will be skipped and the
         // result returned
         this.prepResult = await this.assureUserPermissions(zabbixAPI);
         return this.prepResult;
     }
+    /**
+     * Ensures that the user has the required permissions.
+     * @param zabbixAPI - The Zabbix API instance.
+     * @returns A promise that resolves to undefined if permissions are granted, or an error otherwise.
+     */
     async assureUserPermissions(zabbixAPI: ZabbixAPI) {
         if (this.authToken && this.authToken === Config.ZABBIX_PRIVILEGE_ESCALATION_TOKEN) {
             // Bypass permission check for the privilege escalation token as it is assumed to have required rights
@@ -104,6 +124,14 @@ export class ZabbixPermissionsHelper {
     private static permissionObjectNameCache: Map<string, string | null> = new Map()
     public static ZABBIX_PERMISSION_TEMPLATE_GROUP_NAME_PREFIX = Config.ZABBIX_PERMISSION_TEMPLATE_GROUP_NAME_PREFIX
 
+    /**
+     * Retrieves permissions for the current user.
+     * @param zabbixAPI - The Zabbix API instance.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @param objectNames - Optional filter for object names.
+     * @returns A promise that resolves to an array of user permissions.
+     */
     public static async getUserPermissions(zabbixAPI: ZabbixAPI, zabbixAuthToken?: string, cookie?: string,
                                            objectNames?: InputMaybe<string[]> | undefined): Promise<UserPermission[]> {
         return Array.from((await this.getUserPermissionNumbers(zabbixAPI, zabbixAuthToken, cookie, objectNames)).entries()).map(value => {
@@ -211,6 +239,14 @@ export class ZabbixPermissionsHelper {
         return value.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string
     }
 
+    /**
+     * Checks if the user has the required permissions.
+     * @param zabbixAPI - The Zabbix API instance.
+     * @param args - The permissions to check.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to true if the user has all required permissions, false otherwise.
+     */
     public static async hasUserPermissions(zabbixAPI: ZabbixAPI, args: QueryHasPermissionsArgs, zabbixAuthToken?: string | null, cookie?: string | null): Promise<boolean> {
         let permissions = await this.getUserPermissionNumbers(zabbixAPI, zabbixAuthToken, cookie);
         for (const permission of args.permissions) {
diff --git a/src/datasources/zabbix-request.ts b/src/datasources/zabbix-request.ts
index 72bbcb1..f4f815f 100644
--- a/src/datasources/zabbix-request.ts
+++ b/src/datasources/zabbix-request.ts
@@ -33,11 +33,18 @@ export interface ZabbixWithTagsParams extends ZabbixParams {
     tags?: { tag: string; operator: number; value?: any; }[]
 }
 
+/**
+ * Parser for arguments passed to Zabbix requests.
+ * Handles Zabbix-specific argument mapping like name_pattern, tag filters, and field filters.
+ */
 export class ParsedArgs {
     public name_pattern?: string
     public distinct_by_name?: boolean;
     public zabbix_params: ZabbixParams[] | ZabbixParams
 
+    /**
+     * @param params - The raw parameters to parse.
+     */
     constructor(params?: any) {
         if (Array.isArray(params)) {
             this.zabbix_params = params.map(arg => this.parseArgObject(arg))
@@ -46,6 +53,11 @@ export class ParsedArgs {
         }
     }
 
+    /**
+     * Retrieves a parameter value by name.
+     * @param paramName - The name of the parameter to retrieve.
+     * @returns The parameter value or undefined.
+     */
     getParam(paramName: string): any {
         if (this.zabbix_params instanceof Array) {
             return undefined
@@ -54,6 +66,11 @@ export class ParsedArgs {
         return paramName in this.zabbix_params ? this.zabbix_params[paramName] : undefined
     }
 
+    /**
+     * Parses an argument object into Zabbix parameters.
+     * @param args - The raw argument object.
+     * @returns The parsed Zabbix parameters.
+     */
     parseArgObject(args?: any) {
         if (args && (typeof args !== 'object' || args.constructor !== Object)) {
             return args;
@@ -146,6 +163,9 @@ export class ParsedArgs {
     }
 }
 
+/**
+ * Base class for all Zabbix API requests.
+ */
 export class ZabbixRequest<T extends ZabbixResult, A extends ParsedArgs = ParsedArgs> {
     protected requestBodyTemplate: ZabbixRequestBody;
     protected method: string
@@ -153,11 +173,22 @@ export class ZabbixRequest<T extends ZabbixResult, A extends ParsedArgs = Parsed
     protected skippableZabbixParams: Map<string, string> = new Map();
     protected impliedFields: Map<string, string[]> = new Map();
 
+    /**
+     * @param path - The Zabbix API method path.
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(public path: string, public authToken?: string | null, public cookie?: string | null) {
         this.method = path.split(".", 2).join(".");
         this.requestBodyTemplate = new ZabbixRequestBody(this.method);
     }
 
+    /**
+     * Optimizes Zabbix parameters by removing unused fields and adding implied fields based on the requested output.
+     * @param params - The Zabbix parameters to optimize.
+     * @param output - The list of requested output fields.
+     * @returns The optimized Zabbix parameters.
+     */
     optimizeZabbixParams(params: ZabbixParams, output?: string[]): ZabbixParams {
         if (!output || output.length === 0) {
             return params;
@@ -202,10 +233,24 @@ export class ZabbixRequest<T extends ZabbixResult, A extends ParsedArgs = Parsed
         return params;
     }
 
+    /**
+     * Creates the parameters for the Zabbix API request.
+     * @param args - The parsed arguments for the request.
+     * @param output - The list of fields to return.
+     * @returns The Zabbix parameters.
+     */
     createZabbixParams(args?: A, output?: string[]): ZabbixParams {
         return this.optimizeZabbixParams(args?.zabbix_params || {}, output)
     }
 
+    /**
+     * Constructs the request body for the Zabbix API call.
+     * @param args - The parsed arguments for the request.
+     * @param zabbixParams - Optional pre-constructed Zabbix parameters.
+     * @param output - The list of fields to return.
+     * @param version - The Zabbix API version.
+     * @returns The constructed Zabbix request body.
+     */
     getRequestBody(args?: A, zabbixParams?: ZabbixParams, output?: string[], version?: string): ZabbixRequestBody {
         let params: ZabbixParams
         if (Array.isArray(args?.zabbix_params)) {
@@ -233,6 +278,10 @@ export class ZabbixRequest<T extends ZabbixResult, A extends ParsedArgs = Parsed
         return body
     };
 
+    /**
+     * Returns the HTTP headers for the Zabbix API call.
+     * @returns The HTTP headers.
+     */
     headers() {
         let headers: {
             "Content-Type": string
@@ -255,12 +304,25 @@ export class ZabbixRequest<T extends ZabbixResult, A extends ParsedArgs = Parsed
     }
 
 
+    /**
+     * Prepares the request before execution. Can be overridden to perform checks or transformations.
+     * @param zabbixAPI - The Zabbix API instance.
+     * @param _args - The parsed arguments for the request.
+     * @returns A promise that resolves to the result, an error, or undefined if preparation is successful.
+     */
     async prepare(zabbixAPI: ZabbixAPI, _args?: A): Promise<T | ZabbixErrorResult | undefined> {
         // If prepare returns something else than undefined, the execution will be skipped and the
         // result returned
         return this.prepResult;
     }
 
+    /**
+     * Executes the request and returns the result or an error.
+     * @param zabbixAPI - The Zabbix API instance.
+     * @param args - The parsed arguments for the request.
+     * @param output - The list of fields to return.
+     * @returns A promise that resolves to the result or an error.
+     */
     async executeRequestReturnError(zabbixAPI: ZabbixAPI, args?: A, output?: string[]): Promise<T | ZabbixErrorResult> {
         let prepareResult = await this.prepare(zabbixAPI, args);
         if (prepareResult) {
@@ -299,6 +361,14 @@ export class ZabbixRequest<T extends ZabbixResult, A extends ParsedArgs = Parsed
         }
     }
 
+    /**
+     * Executes the request and throws an error if it fails.
+     * @param zabbixApi - The Zabbix API instance.
+     * @param args - The parsed arguments for the request.
+     * @param output - The list of fields to return.
+     * @returns A promise that resolves to the result.
+     * @throws GraphQLError if the request fails.
+     */
     async executeRequestThrowError(zabbixApi: ZabbixAPI, args?: A, output?: string[]): Promise<T> {
         let response = await this.executeRequestReturnError(zabbixApi, args, output);
         if (isZabbixErrorResult(response)) {
@@ -317,16 +387,34 @@ export class ZabbixRequest<T extends ZabbixResult, A extends ParsedArgs = Parsed
 
 }
 
+/**
+ * Parameters for creating or updating entities in Zabbix.
+ */
 export class ZabbixCreateOrUpdateParams extends ParsedArgs {
+    /**
+     * @param args - The raw arguments.
+     * @param dryRun - Whether to perform a dry run (default: true).
+     */
     constructor(args: any, public dryRun = true) {
         super(args);
     }
 }
 
+/**
+ * Request to create or update entities in Zabbix.
+ * Automatically checks if an entity with the same name already exists.
+ */
 export class ZabbixCreateOrUpdateRequest<
     T extends ZabbixResult,
     P extends ZabbixRequest<ZabbixResult>,
     A extends ZabbixCreateOrUpdateParams = ZabbixCreateOrUpdateParams> extends ZabbixRequest<T, A> {
+    /**
+     * @param entity - The entity name (e.g., "host", "usergroup").
+     * @param updateExistingIdFieldname - The name of the ID field used for updating.
+     * @param prepareType - The class type used to query for existing entities.
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(public entity: string,
                 public updateExistingIdFieldname: string,
                 private prepareType: new (authToken?: string | null, cookie?: string | null) => P, authToken?: string | null, cookie?: string | null) {
diff --git a/src/datasources/zabbix-script.ts b/src/datasources/zabbix-script.ts
index edfcd4d..bcbb115 100644
--- a/src/datasources/zabbix-script.ts
+++ b/src/datasources/zabbix-script.ts
@@ -3,12 +3,21 @@ import {ApiErrorCode} from "../model/model_enum_values.js";
 import {isZabbixErrorResult, ParsedArgs, ZabbixErrorResult, ZabbixParams, ZabbixRequest} from "./zabbix-request.js";
 import {ZabbixQueryHostsMetaRequest} from "./zabbix-hosts.js";
 
+/**
+ * Parameters for forcing a Zabbix configuration cache reload.
+ */
 export class ZabbixForceCacheReloadParams extends ParsedArgs {
+    /**
+     * @param hostid - The ID of the host to execute the script on.
+     */
     constructor(public hostid: number) {
         super();
     }
 }
 
+/**
+ * Request to force a Zabbix configuration cache reload.
+ */
 export class ZabbixForceCacheReloadRequest extends ZabbixRequest<{
     response: string
     value: string
@@ -27,6 +36,10 @@ export class ZabbixForceCacheReloadRequest extends ZabbixRequest<{
         "scope": "2"
     };
 
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("script.execute", authToken, cookie);
     }
diff --git a/src/datasources/zabbix-templates.ts b/src/datasources/zabbix-templates.ts
index e6b7ad5..969a80e 100644
--- a/src/datasources/zabbix-templates.ts
+++ b/src/datasources/zabbix-templates.ts
@@ -12,12 +12,25 @@ export interface ZabbixQueryTemplateResponse {
 }
 
 
+/**
+ * Request to query templates from Zabbix.
+ */
 export class ZabbixQueryTemplatesRequest extends ZabbixRequest<ZabbixQueryTemplateResponse[]> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null,) {
         super("template.get", authToken, cookie);
         this.skippableZabbixParams.set("selectItems", "items");
     }
 
+    /**
+     * Creates the parameters for the Zabbix API request.
+     * @param args - The parsed arguments for the request.
+     * @param output - The list of fields to return.
+     * @returns The Zabbix parameters.
+     */
     createZabbixParams(args?: ParsedArgs, output?: string[]): ZabbixParams {
         return this.optimizeZabbixParams({
             "selectItems": "extend",
@@ -26,6 +39,13 @@ export class ZabbixQueryTemplatesRequest extends ZabbixRequest<ZabbixQueryTempla
         }, output);
     }
 
+    /**
+     * Executes the request and returns the result or an error.
+     * @param zabbixAPI - The Zabbix API instance.
+     * @param args - The parsed arguments for the request.
+     * @param output - The list of fields to return.
+     * @returns A promise that resolves to the result or an error.
+     */
     async executeRequestReturnError(zabbixAPI: ZabbixAPI, args?: ParsedArgs, output?: string[]): Promise<ZabbixErrorResult | ZabbixQueryTemplateResponse[]> {
         let result = await super.executeRequestReturnError(zabbixAPI, args, output);
 
@@ -64,44 +84,93 @@ export interface ZabbixQueryTemplateGroupResponse {
     uuid: string
 }
 
+/**
+ * Request to query template groups from Zabbix.
+ */
 export class ZabbixQueryTemplateGroupRequest extends ZabbixRequest<ZabbixQueryTemplateGroupResponse[]> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("templategroup.get", authToken, cookie);
     }
 }
 
 
+/**
+ * Request to create a template group in Zabbix.
+ */
 export class ZabbixCreateTemplateGroupRequest extends ZabbixRequest<{ groupids: string[] }> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("templategroup.create", authToken, cookie);
     }
 }
 
+/**
+ * Request to create a template in Zabbix.
+ */
 export class ZabbixCreateTemplateRequest extends ZabbixRequest<{ templateids: string[] }> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("template.create", authToken, cookie);
     }
 }
 
+/**
+ * Request to query items from Zabbix.
+ */
 export class ZabbixQueryItemRequest extends ZabbixRequest<any[]> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("item.get", authToken, cookie);
     }
 }
 
+/**
+ * Request to create an item in Zabbix.
+ */
 export class ZabbixCreateItemRequest extends ZabbixRequest<{ itemids: string[] }> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("item.create", authToken, cookie);
     }
 }
 
+/**
+ * Request to delete templates in Zabbix.
+ */
 export class ZabbixDeleteTemplatesRequest extends ZabbixRequest<{ templateids: string[] }> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("template.delete", authToken, cookie);
     }
 }
 
+/**
+ * Request to delete template groups in Zabbix.
+ */
 export class ZabbixDeleteTemplateGroupsRequest extends ZabbixRequest<{ groupids: string[] }> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("templategroup.delete", authToken, cookie);
     }
@@ -109,6 +178,14 @@ export class ZabbixDeleteTemplateGroupsRequest extends ZabbixRequest<{ groupids:
 
 
 export class TemplateHelper {
+    /**
+     * Finds template IDs by their names.
+     * @param templateNames - The names of the templates to find.
+     * @param zabbixApi - The Zabbix API instance.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to an array of template IDs or null if any template is not found.
+     */
     public static async findTemplateIdsByName(templateNames: string[], zabbixApi: ZabbixAPI, zabbixAuthToken?: string, cookie?: string) {
         let result: number[] = []
         for (let templateName of templateNames) {
diff --git a/src/datasources/zabbix-usergroups.ts b/src/datasources/zabbix-usergroups.ts
index a7d76c0..88490f0 100644
--- a/src/datasources/zabbix-usergroups.ts
+++ b/src/datasources/zabbix-usergroups.ts
@@ -56,9 +56,16 @@ abstract class ZabbixPrepareGetTemplatesAndHostgroupsRequest<T extends ZabbixRes
     }
 }
 
+/**
+ * Arguments for exporting user groups.
+ */
 export class ZabbixExportUserGroupArgs extends ParsedArgs {
     public exclude_hostgroups_pattern?: RegExp | undefined = undefined;
 
+    /**
+     * @param name_pattern - Optional wildcard name pattern for filtering user groups.
+     * @param exclude_hostgroups_pattern_str - Optional regex string to exclude host groups by name.
+     */
     constructor(name_pattern?: string | null, exclude_hostgroups_pattern_str?: string | null) {
         super(name_pattern? {name_pattern: name_pattern} : undefined);
         if (exclude_hostgroups_pattern_str) {
@@ -67,8 +74,15 @@ export class ZabbixExportUserGroupArgs extends ParsedArgs {
     }
 }
 
+/**
+ * Request to export user groups from Zabbix.
+ */
 export class ZabbixExportUserGroupsRequest extends ZabbixPrepareGetTemplatesAndHostgroupsRequest<
     UserGroup[], ZabbixExportUserGroupArgs> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string) {
         super("usergroup.get.withuuids", authToken, cookie);
     }
@@ -117,7 +131,14 @@ export class ZabbixExportUserGroupsRequest extends ZabbixPrepareGetTemplatesAndH
     }
 }
 
+/**
+ * Request to query user groups from Zabbix.
+ */
 export class ZabbixQueryUserGroupsRequest extends ZabbixRequest<UserGroup[]> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("usergroup.get", authToken, cookie);
     }
@@ -130,15 +151,29 @@ export class ZabbixQueryUserGroupsRequest extends ZabbixRequest<UserGroup[]> {
     }
 }
 
+/**
+ * Parameters for importing user groups.
+ */
 export class ZabbixImportUserGroupsParams extends ParsedArgs {
+    /**
+     * @param usergroups - The user groups to import.
+     * @param dryRun - Whether to perform a dry run (default: true).
+     */
     constructor(public usergroups: UserGroupInput[], public dryRun = true) {
         super();
     }
 }
 
+/**
+ * Request to import user groups into Zabbix.
+ */
 export class ZabbixImportUserGroupsRequest
     extends ZabbixPrepareGetTemplatesAndHostgroupsRequest<ImportUserRightResult[],
         ZabbixImportUserGroupsParams> {
+    /**
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(zabbixAuthToken: any, cookie: any) {
         super("usergroup.create.import", zabbixAuthToken, cookie);
     }
@@ -328,8 +363,15 @@ class ZabbixPropagateHostGroupsParams extends ParsedArgs {
     }
 }
 
+/**
+ * Request to propagate host group permissions to children in Zabbix.
+ */
 export class ZabbixPropagateHostGroupsRequest extends ZabbixRequest<ZabbixCreateUserGroupResponse,
     ZabbixPropagateHostGroupsParams> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("hostgroup.propagate", authToken, cookie);
     }
diff --git a/src/datasources/zabbix-userroles.ts b/src/datasources/zabbix-userroles.ts
index 5095f01..c83d07c 100644
--- a/src/datasources/zabbix-userroles.ts
+++ b/src/datasources/zabbix-userroles.ts
@@ -26,7 +26,14 @@ export class ZabbixPrepareGetModulesRequest<T extends ZabbixResult, A extends Pa
     }
 }
 
+/**
+ * Request to query user roles from Zabbix.
+ */
 export class ZabbixQueryUserRolesRequest extends ZabbixPrepareGetModulesRequest<UserRole[]> {
+    /**
+     * @param authToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(authToken?: string | null, cookie?: string | null) {
         super("role.get", authToken, cookie);
     }
@@ -63,14 +70,28 @@ export class ZabbixQueryUserRolesRequest extends ZabbixPrepareGetModulesRequest<
     }
 }
 
+/**
+ * Parameters for importing user roles.
+ */
 export class ZabbixImportUserRolesParams extends ParsedArgs {
+    /**
+     * @param userRoles - The user roles to import.
+     * @param dryRun - Whether to perform a dry run (default: false).
+     */
     constructor(public userRoles: UserRoleInput[], public dryRun: boolean = false) {
         super();
     }
 }
 
+/**
+ * Request to import user roles into Zabbix.
+ */
 export class ZabbixImportUserRolesRequest extends ZabbixPrepareGetModulesRequest<ImportUserRightResult[],
     ZabbixImportUserRolesParams> {
+    /**
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     */
     constructor(zabbixAuthToken: any, cookie: any) {
         super("role.create.import", zabbixAuthToken, cookie);
     }
diff --git a/src/execution/host_deleter.ts b/src/execution/host_deleter.ts
index 7288189..5481076 100644
--- a/src/execution/host_deleter.ts
+++ b/src/execution/host_deleter.ts
@@ -12,8 +12,19 @@ import {
 import {isZabbixErrorResult, ParsedArgs} from "../datasources/zabbix-request.js";
 import {zabbixAPI} from "../datasources/zabbix-api.js";
 
+/**
+ * Handles deleting hosts and host groups from Zabbix.
+ */
 export class HostDeleter {
 
+    /**
+     * Deletes hosts based on their IDs or a name pattern.
+     * @param hostids - The IDs of the hosts to delete.
+     * @param name_pattern - Optional wildcard name pattern for filtering hosts.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to an array of delete responses.
+     */
     public static async deleteHosts(hostids: number[] | null | undefined, name_pattern?: string | null, zabbixAuthToken?: string, cookie?: string): Promise<DeleteResponse[]> {
         const result: DeleteResponse[] = [];
         let idsToDelete = hostids ? [...hostids] : [];
@@ -60,6 +71,14 @@ export class HostDeleter {
         return result;
     }
 
+    /**
+     * Deletes host groups based on their IDs or a name pattern.
+     * @param groupids - The IDs of the host groups to delete.
+     * @param name_pattern - Optional wildcard name pattern for filtering host groups.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to an array of delete responses.
+     */
     public static async deleteHostGroups(groupids: number[] | null | undefined, name_pattern?: string | null, zabbixAuthToken?: string, cookie?: string): Promise<DeleteResponse[]> {
         const result: DeleteResponse[] = [];
         let idsToDelete = groupids ? [...groupids] : [];
diff --git a/src/execution/host_exporter.ts b/src/execution/host_exporter.ts
index 563ffec..1154a9b 100644
--- a/src/execution/host_exporter.ts
+++ b/src/execution/host_exporter.ts
@@ -21,7 +21,17 @@ type ItemMapResponse = {
     error?: ApiError
 }
 
+/**
+ * Handles exporting host history data from Zabbix.
+ */
 export class HostValueExporter {
+    /**
+     * Exports history data based on the provided filter arguments.
+     * @param args - The filter and output options for the export.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to a generic response containing the history data.
+     */
     static async exportHistory(args: QueryExportHostValueHistoryArgs, zabbixAuthToken?: string, cookie?: string): Promise<GenericResponse> {
         let itemMapResponse: ItemMapResponse = await HostValueExporter.queryItemsForFilterArgs(args, zabbixAuthToken, cookie);
         if (itemMapResponse.error || !itemMapResponse.items) {
@@ -75,6 +85,13 @@ export class HostValueExporter {
         }
     }
 
+    /**
+     * Queries for items matching the provided filter arguments to be used in history export.
+     * @param args - The filter arguments.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to an item map response.
+     */
     static async queryItemsForFilterArgs(args: QueryExportHostValueHistoryArgs, zabbixAuthToken?: string, cookie?: string): Promise<ItemMapResponse> {
         let hostFilter = args.host_filter
         let itemKeyFilter = args.itemKey_filter
diff --git a/src/execution/host_importer.ts b/src/execution/host_importer.ts
index 43f4247..8ea070a 100644
--- a/src/execution/host_importer.ts
+++ b/src/execution/host_importer.ts
@@ -12,7 +12,15 @@ import {isZabbixErrorResult, ParsedArgs, ZabbixErrorResult} from "../datasources
 import {CreateHostGroupResult, GroupHelper, ZabbixCreateHostGroupRequest} from "../datasources/zabbix-hostgroups.js";
 import {ZABBIX_EDGE_DEVICE_BASE_GROUP, zabbixAPI} from "../datasources/zabbix-api.js";
 
+/**
+ * Handles importing hosts and host groups into Zabbix.
+ */
 export class HostImporter {
+    /**
+     * Extracts and sorts all parent group names from a list of host groups to ensure correct hierarchy creation.
+     * @param hostGroups - The list of host groups to process.
+     * @returns A sorted array of host groups including parents.
+     */
     public static getHostGroupHierarchyNames(hostGroups: Array<CreateHostGroup>) {
         let nameToGroup = new Map<string, CreateHostGroup>()
         for (let group of hostGroups || []) {
@@ -31,6 +39,13 @@ export class HostImporter {
         return Array.from(nameToGroup.values()).sort((a, b) => a.groupName.localeCompare(b.groupName))
     }
 
+    /**
+     * Imports host groups into Zabbix, respecting hierarchy.
+     * @param hostGroups - The list of host groups to import.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to an array of import responses.
+     */
     public static async importHostGroups(hostGroups: InputMaybe<Array<CreateHostGroup>> | undefined, zabbixAuthToken?: string, cookie?: string) {
 
         if (!hostGroups) {
@@ -92,6 +107,13 @@ export class HostImporter {
         return result
     }
 
+    /**
+     * Imports hosts into Zabbix, linking them to groups and templates.
+     * @param hosts - The list of hosts to import.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to an array of import responses.
+     */
     static async importHosts(hosts: InputMaybe<Array<CreateHost>> | undefined, zabbixAuthToken?: string, cookie?: string) {
         if (!hosts) {
             return null
diff --git a/src/execution/regression_test_executor.ts b/src/execution/regression_test_executor.ts
index d3c49db..efb662f 100644
--- a/src/execution/regression_test_executor.ts
+++ b/src/execution/regression_test_executor.ts
@@ -15,7 +15,16 @@ import {ZabbixQueryTemplatesRequest} from "../datasources/zabbix-templates.js";
 import {isZabbixErrorResult, ParsedArgs, ZabbixRequest} from "../datasources/zabbix-request.js";
 import {ZabbixHistoryPushParams, ZabbixHistoryPushRequest} from "../datasources/zabbix-history.js";
 
+/**
+ * Handles the execution of regression tests to ensure bug fixes remain effective.
+ */
 export class RegressionTestExecutor {
+    /**
+     * Runs all regression tests, including locations query order, template lookup, HTTP Agent support, macro assignment, and more.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to a smoketest response containing the success status and detailed steps.
+     */
     public static async runAllRegressionTests(zabbixAuthToken?: string, cookie?: string): Promise<SmoketestResponse> {
         const steps: SmoketestStep[] = [];
         let success = true;
diff --git a/src/execution/smoketest_executor.ts b/src/execution/smoketest_executor.ts
index f2a3598..95b682d 100644
--- a/src/execution/smoketest_executor.ts
+++ b/src/execution/smoketest_executor.ts
@@ -7,7 +7,19 @@ import {zabbixAPI} from "../datasources/zabbix-api.js";
 import {ZabbixQueryHostsGenericRequest} from "../datasources/zabbix-hosts.js";
 import {ParsedArgs} from "../datasources/zabbix-request.js";
 
+/**
+ * Handles the execution of a complete smoketest in Zabbix.
+ */
 export class SmoketestExecutor {
+    /**
+     * Runs a smoketest by creating a template, host group, and host, verifying their creation and linkage, and then cleaning up.
+     * @param hostName - The technical name of the host to create during the test.
+     * @param templateName - The technical name of the template to create during the test.
+     * @param groupName - The technical name of the host group to create during the test.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to a smoketest response containing the success status and detailed steps.
+     */
     public static async runSmoketest(hostName: string, templateName: string, groupName: string, zabbixAuthToken?: string, cookie?: string): Promise<SmoketestResponse> {
         const steps: SmoketestStep[] = [];
         let success = true;
diff --git a/src/execution/template_deleter.ts b/src/execution/template_deleter.ts
index ac5a6b2..02dda74 100644
--- a/src/execution/template_deleter.ts
+++ b/src/execution/template_deleter.ts
@@ -8,8 +8,19 @@ import {
 import {isZabbixErrorResult, ParsedArgs} from "../datasources/zabbix-request.js";
 import {zabbixAPI} from "../datasources/zabbix-api.js";
 
+/**
+ * Handles deleting templates and template groups from Zabbix.
+ */
 export class TemplateDeleter {
 
+    /**
+     * Deletes templates based on their IDs or a name pattern.
+     * @param templateids - The IDs of the templates to delete.
+     * @param name_pattern - Optional wildcard name pattern for filtering templates.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to an array of delete responses.
+     */
     public static async deleteTemplates(templateids: number[] | null | undefined, name_pattern?: string | null, zabbixAuthToken?: string, cookie?: string): Promise<DeleteResponse[]> {
         const result: DeleteResponse[] = [];
         let idsToDelete = templateids ? [...templateids] : [];
@@ -55,6 +66,14 @@ export class TemplateDeleter {
         return result;
     }
 
+    /**
+     * Deletes template groups based on their IDs or a name pattern.
+     * @param groupids - The IDs of the template groups to delete.
+     * @param name_pattern - Optional wildcard name pattern for filtering template groups.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to an array of delete responses.
+     */
     public static async deleteTemplateGroups(groupids: number[] | null | undefined, name_pattern?: string | null, zabbixAuthToken?: string, cookie?: string): Promise<DeleteResponse[]> {
         const result: DeleteResponse[] = [];
         let idsToDelete = groupids ? [...groupids] : [];
diff --git a/src/execution/template_importer.ts b/src/execution/template_importer.ts
index e826806..3fb8c52 100644
--- a/src/execution/template_importer.ts
+++ b/src/execution/template_importer.ts
@@ -17,8 +17,18 @@ import {
 import {isZabbixErrorResult, ParsedArgs, ZabbixErrorResult} from "../datasources/zabbix-request.js";
 import {zabbixAPI} from "../datasources/zabbix-api.js";
 
+/**
+ * Handles importing templates and template groups into Zabbix.
+ */
 export class TemplateImporter {
 
+    /**
+     * Imports template groups into Zabbix.
+     * @param templateGroups - The list of template groups to import.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to an array of import responses.
+     */
     public static async importTemplateGroups(templateGroups: InputMaybe<Array<CreateTemplateGroup>> | undefined, zabbixAuthToken?: string, cookie?: string) {
         if (!templateGroups) {
             return null
@@ -79,6 +89,13 @@ export class TemplateImporter {
         return result
     }
 
+    /**
+     * Imports templates into Zabbix, including their items and linked templates.
+     * @param templates - The list of templates to import.
+     * @param zabbixAuthToken - Optional Zabbix authentication token.
+     * @param cookie - Optional session cookie.
+     * @returns A promise that resolves to an array of import responses.
+     */
     public static async importTemplates(templates: InputMaybe<Array<CreateTemplate>> | undefined, zabbixAuthToken?: string, cookie?: string) {
         if (!templates) {
             return null
diff --git a/src/model/model_enum_values.ts b/src/model/model_enum_values.ts
index 30c743c..dbe832a 100644
--- a/src/model/model_enum_values.ts
+++ b/src/model/model_enum_values.ts
@@ -1,4 +1,7 @@
 // Zabbix value enum mappings
+/**
+ * Communication types used by Zabbix items.
+ */
 export enum DeviceCommunicationType {
     ZABBIX_AGENT = "0",
     ZABBIX_TRAP = "2",
@@ -16,17 +19,26 @@ export enum DeviceCommunicationType {
     SIMULATOR_JAVASCRIPT = "21",
 }
 
+/**
+ * Status of a Zabbix device or item.
+ */
 export enum DeviceStatus {
     ENABLED = "0",
     DISABLED = "1"
 }
 
+/**
+ * Types of storage for Zabbix items.
+ */
 export enum StorageItemType {
     Float = 0,
     Int = 3,
     Text = 4,
 }
 
+/**
+ * Error codes returned by the API.
+ */
 export enum ApiErrorCode {
     OK = 0,
     ZABBIX_ERROR = 1000,
@@ -45,6 +57,9 @@ export enum ApiErrorCode {
     PERMISSION_ERROR = 2002,
 }
 
+/**
+ * Error messages returned by the API.
+ */
 export enum ApiErrorMessage {
     OK = "",
     ZABBIX_NO_TRAPPER_ITEMS_FOR_PUSHING_VALUES_FOUND = "Unable to push value to history, didn't find corresponding trapper item",

From b894687bea50b3f89b10df977613942b10258559 Mon Sep 17 00:00:00 2001
From: Andreas Hilbig <andreas.hilbig@hilbigit.com>
Date: Wed, 11 Feb 2026 13:32:39 +0100
Subject: [PATCH 2/2] fix(history): default exportHostValueHistory limit to
 undefined

When no limit is provided to exportHostValueHistory, return all available records instead of only one. This aligns GraphQL defaults with user expectations.

- Change: set ZabbixHistoryGetParams.limit default to undefined

- Type safety: widened limit type to number | null | undefined
---
 src/datasources/zabbix-history.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/datasources/zabbix-history.ts b/src/datasources/zabbix-history.ts
index d89bec0..9098223 100644
--- a/src/datasources/zabbix-history.ts
+++ b/src/datasources/zabbix-history.ts
@@ -35,7 +35,7 @@ export class ZabbixHistoryGetParams extends ParsedArgs {
      */
     constructor(public itemids: number[] | number | string | string[],
                 public output: string[] = ["value", "itemid", "clock", "ns"],
-                public limit: number | null = Array.isArray(itemids) ? itemids.length : 1,
+                public limit: number | null | undefined = undefined,
                 public history: StorageItemType | string = StorageItemType.Text,
                 time_from?: Date,
                 time_until?: Date,