Chapter 57: Extend Your Claw with MCP
In Chapter 56 you connected someone else's MCP server. In this chapter you build your own.
Your agent can chat, remember, follow schedules, and use installed skills. What it cannot do is reach outside its box: it cannot check a database, call an API, or verify a learner's progress. MCP servers give your agent tools that perform real actions in the real world.
You will not write the server yourself. You install the mcp-builder skill into Claude Code, describe what you need in plain English, steer the spec, and verify the result. By the end, your agent has a new tool that works from WhatsApp.
What You'll Learn
By the end of this chapter, you will have built and connected an MCP server to your OpenClaw agent, tested it end-to-end from WhatsApp, and understood the describe-steer-verify workflow that scales to any number of tools.
Lessons
| # | Lesson | What You Do |
|---|---|---|
| 1 | Your Agent Needs Hands | Why your agent has knowledge but not ability |
| 2 | Set Up the Workshop | Create a project, install the mcp-builder skill |
| 3 | Choose Your Wire | Pick a transport, update CLAUDE.md |
| 4 | Spec and Build Your First Tool | Describe a tool, steer the spec, build and test |
| 5 | Connect and Test from WhatsApp | Wire the server to OpenClaw, test from your phone |
| 6 | Chapter Quiz | 50 scenario-based questions |
Prerequisites
- Chapter 56: Meet Your Personal AI Employee (you configured MCP servers as a consumer)
- Part 4: Python proficiency (you drove the TDG cycle with Claude Code)