diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,667 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+  The licenses for most software and other practical works are designed
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+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
+CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
+ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
+NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
+LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
+TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
+PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as
+    published by the Free Software Foundation, either version 3 of the
+    License, or (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..6adef15
--- /dev/null
+++ b/README.md
@@ -0,0 +1,94 @@
+# Zabbix GraphQL API
+
+A modern GraphQL interface for Zabbix, providing enhanced features and easier integration for automation and management.
+
+## Purpose
+
+The Zabbix GraphQL API acts as a wrapper and enhancer for the native Zabbix JSON-RPC API. It simplifies complex operations, provides a strongly-typed schema, and adds advanced logic for importing, querying, and managing Zabbix entities like hosts, templates, and user rights.
+
+## Key Features & Enhancements
+
+Compared to the original Zabbix API, this GraphQL API provides several key enhancements:
+
+*   **Mass Import/Export**: Robust support for importing and exporting templates, template groups, hosts, and host groups in bulk.
+*   **Hierarchical Host Groups**: Automatically handles the creation and resolution of nested host group hierarchies (e.g., `Parent/Child/Leaf`).
+*   **Template Management**:
+    *   Full support for template items, including complex preprocessing steps and tags.
+    *   **Dependent Item Support**: Intelligent deferred creation logic to handle item dependencies within a template.
+    *   Linked template resolution by name.
+*   **Advanced Deletion**: Ability to delete templates and template groups not only by ID but also by **name patterns** (supporting Zabbix wildcards like `%`).
+*   **User Rights & Permissions**:
+    *   Integrated management of user roles and user groups.
+    *   Support for importing/exporting user rights with UUID-based matching for cross-instance consistency.
+    *   On-the-fly permission checks (`hasPermissions`, `userPermissions`).
+*   **Improved Error Reporting**: Detailed error data from Zabbix is appended to GraphQL error messages, making debugging significantly easier.
+*   **Strongly Typed Schema**: Leverages GraphQL's type system for clear API documentation and client-side code generation.
+
+## How to Install and Start
+
+### Prerequisites
+
+*   **Node.js**: Version 18 or higher recommended.
+*   **Zabbix**: A running Zabbix instance (compatible with Zabbix 6.0+).
+
+### Installation
+
+1.  Clone the repository:
+    ```bash
+    git clone <repository-url>
+    cd zabbix-graphql-api
+    ```
+
+2.  Install dependencies:
+    ```bash
+    npm install
+    ```
+
+### Configuration
+
+The API is configured via environment variables. Create a `.env` file or set them in your environment:
+
+| Variable | Description | Default |
+| :--- | :--- | :--- |
+| `ZABBIX_BASE_URL` | URL to your Zabbix API (e.g., `http://zabbix.example.com/zabbix`) | |
+| `ZABBIX_AUTH_TOKEN` | Zabbix Super Admin API token for administrative tasks | |
+| `ZABBIX_EDGE_DEVICE_BASE_GROUP` | Base host group for devices | `Baustellen-Devices` |
+| `SCHEMA_PATH` | Path to the directory containing `.graphql` schema files | `./schema/` |
+
+### Starting the API
+
+#### Development Mode
+Starts the server with `nodemon` and `tsx` for automatic reloading:
+```bash
+npm run start
+```
+
+#### Production Mode
+Builds the project and runs the compiled code:
+```bash
+npm run prod
+```
+
+The API will be available at `http://localhost:4000/`.
+
+## Usage Samples
+
+The `docs` directory contains several sample GraphQL queries and mutations to help you get started:
+
+*   **Hosts**:
+    *   [Query All Hosts](docs/sample_all_hosts_query.graphql)
+    *   [Import Hosts](docs/sample_import_hosts_mutation.graphql)
+*   **Templates**:
+    *   [Query Templates](docs/sample_templates_query.graphql)
+    *   [Import Templates](docs/sample_import_templates_mutation.graphql)
+    *   [Delete Templates](docs/sample_delete_templates_mutation.graphql)
+*   **Template Groups**:
+    *   [Import Template Groups](docs/sample_import_template_groups_mutation.graphql)
+    *   [Delete Template Groups](docs/sample_delete_template_groups_mutation.graphql)
+*   **User Rights**:
+    *   [Export User Rights](docs/sample_export_user_rights_query.graphql)
+    *   [Import User Rights](docs/sample_import_user_rights_mutation.graphql)
+
+## License
+
+This project is licensed under the **GNU Affero General Public License v3.0**. See the [LICENSE](LICENSE) file for details.
diff --git a/package.json b/package.json
index a59a819..4110518 100644
--- a/package.json
+++ b/package.json
@@ -14,6 +14,7 @@
     "copy-schema": "cp -R schema ./dist/"
   },
   "keywords": [],
+  "license": "AGPL-3.0-only",
   "author": "Andreas Hilbig",
   "copyright": "All rights reserved by Hilbig IT GmbH",
   "dependencies": {