Build your first MCP server
You want to build your first MCP server without slogging through the protocol spec. MCP Builder scaffolds the boilerplate from Claude Code, FastMCP exposes your Python functions to Claude via a decorator, and Claude Code itself acts as the runtime to hot-test from the first line.
Why
Build your first MCP server, without the plumbing. You installed three open-source MCPs. You see the value. You think: "OK, I want to expose my own tool to Claude Code: my internal API, my Notion export, my homemade scraper." You open the MCP spec. Three hundred pages. JSON-RPC, transports, capabilities, lifecycle. You close the tab. This kit short-circuits the spec for you. You write a normal Python function, add a decorator, and FastMCP generates the schema, validation, transport. You don't read the protocol: you use it. The official Anthropic mcp-builder skill scaffolds the project,…
When
For a dev who has been consuming MCPs for 2-3 months and wants to become a producer: post-discovery appropriation phase. ✅ You know it's your kit when You copy-paste the same context 5 times a week: a custom MCP kills that friction You have an internal API or homemade tool you'd like to plug into Claude You know Python (or you accept to learn it: FastMCP is simpler than Flask) ❌ Not for this…
Tools included
- Claude Code
- Fastmcp
- Mcp Builder