docs: add OpenClaw setup guide

docs/agents/openclaw.md

@@ -0,0 +1,52 @@
+# OpenClaw Setup Guide
+
+## What is OpenClaw?
+
+[OpenClaw](https://github.com/openclaw/openclaw) is an open-source AI agent gateway that manages multiple AI models, plugins, and agent workflows. It supports OpenAI-compatible APIs, custom base URLs, and extensible plugin architecture.
+
+## Integration with Free-Way
+
+### 1. Configuration
+
+Set the following environment variables in your OpenClaw config:
+
+```yaml
+# config.yaml
+plugins:
+  free-way:
+    baseUrl: "http://localhost:8787/v1"
+    apiKey: "FREEWAY_API_KEY"
+```
+
+Or via environment:
+
+```bash
+export FREEWAY_BASE_URL=http://localhost:8787/v1
+export FREEWAY_API_KEY=FREEWAY_API_KEY
+```
+
+### 2. Verification
+
+Check the integration is working:
+
+```bash
+curl -X POST http://localhost:8787/v1/chat/completions \
+  -H "Content-Type: application/json" \
+  -H "Authorization: Bearer FREEWAY_API_KEY" \
+  -d '{
+    "model": "gpt-4",
+    "messages": [{"role": "user", "content": "Hello"}]
+  }'
+```
+
+Expected: `200 OK` with a valid chat completion response.
+
+### 3. Usage
+
+Once configured, OpenClaw routes requests through Free-Way's API endpoint. All OpenClaw plugins and agents automatically inherit the connection through the base URL configuration.
+
+## Troubleshooting
+
+- **Connection refused**: Ensure Free-Way is running on port 8787
+- **401 Unauthorized**: Verify `FREEWAY_API_KEY` is correct
+- **Timeout**: Check network connectivity between OpenClaw and Free-Way