Update README with self-registration docs

README.md

@@ -152,3 +152,25 @@ Stefy Lanza <stefy@nexlab.net>
 ---
 
 <p align="center">Made with 🧠 and 🔧 by Stefy</p>
+
+## Agent Self-Registration
+
+Each OpenClaw instance self-registers with the central MCP server, sending its own info:
+
+```json
+// Call register tool with:
+{
+  "hook": "https://lisa.nexlab.net/hooks/agent",
+  "token": "lisa-own-hook-token-123",
+  "capability_prompt": "Can run commands, manage Ganeti VMs, access cameras",
+  "skill_prompt": "To request a task from me, post a job with:\n- action: the command or action to perform\n- target: the target (e.g., ganeti1, ganeti2)\n- params: any additional parameters\n\nResults are returned as JSON with 'output' and 'error' fields."
+}
+```
+
+The agent provides:
+- **hook**: Its own webhook URL (where to receive jobs)
+- **token**: Its own token (so MCP can authenticate callbacks to it)
+- **capability_prompt**: Short summary (~500 chars) for listing
+- **skill_prompt**: Full instructions (can be large, no limit)
+
+This way each agent controls its own description and authentication.