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Building an MCP server for an external API v1.0.0

Use this resource to build an MCP server that exposes an external API through well-designed tools

New

  • 588 downloads
  • 105 likes
  • 178 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install mcp-server-build-guide

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent defines the tool contract, then implements the server with FastMCP in Python or the MCP SDK in TypeScript, and verifies the generated project. It favors clear tools for an LLM over a plain mirror of the API. You get a structured, verified MCP server.

Mostly picked by

Updated November 2, 2026

Card for the “Building an MCP server for an external API” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
Apache-2.0

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What you get

  • SKILL.md: three-phase flow, from contract to verification
  • SKILL.md: rules for tool design and handling external data

Good fit for

  • You want an assistant to operate your CRM or internal API
  • You are exposing a knowledge base to an MCP client

Not for

    Tags

    • mcp
    • server
    • tools
    • fastmcp
    • api

    About

    You say

    “Build a Python MCP server that exposes our billing API to Claude.”

    Card for the “Building an MCP server for an external API” skill

    Skill published by waybarrios under the Apache-2.0 license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to build an MCP server that exposes an external API through well-designed tools
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md9.3 KB

    Origin and licence

    Listed unmodified

    Author
    waybarrios
    Source
    github.com/waybarrios/opencode-power-pack/tree/c3328ad1633c1561026532f29b718a2380bc52ee/skills/mcp-builder
    Licence
    Apache-2.0

    Notice

    « mcp-builder » (waybarrios, Apache-2.0) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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