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docs/getting_started/installation.md

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+# Installation
+
+## Requirements
+
+- Python 3.8 or higher
+- A FastGPT API key
+
+## Install with pip
+
+```bash
+pip install fastgpt-client
+```
+
+## Install for Development
+
+If you want to contribute to the SDK or run tests:
+
+```bash
+# Clone the repository
+git clone https://github.com/yourusername/fastgpt-python-sdk.git
+cd fastgpt-python-sdk
+
+# Install in development mode
+pip install -e ".[dev]"
+```
+
+### Development Dependencies
+
+The `[dev]` extra includes:
+- `pytest` - Testing framework
+- `ruff` - Linting and formatting
+- `httpx` - HTTP client (already included)
+- `python-dotenv` - Environment variable management
+
+## Verify Installation
+
+```python
+from fastgpt_client import ChatClient, AppClient
+print("FastGPT SDK installed successfully!")
+```
+
+## Next Steps
+
+- [Quick Start Guide](quick_start.md) - Learn the basics
+- [Authentication](authentication.md) - Set up your API key