fastmcp

Build Python-based MCP servers with FastMCP for tools, resources, and prompts.

19|4|Updated Apr 22, 2026
One-click install
npx skills add https://github.com/carterwayneskhizeine/hermes-agent-windows-R --skill fastmcp-carterwayneskhizeine
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: fastmcp
Source: https://github.com/carterwayneskhizeine/hermes-agent-windows-R/tree/main/optional-skills/mcp/fastmcp
Command: npx skills add https://github.com/carterwayneskhizeine/hermes-agent-windows-R --skill fastmcp-carterwayneskhizeine

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps you build and validate MCP servers in Python, then make them usable by MCP clients or over HTTP without guesswork.

Core Features & Use Cases

  • Scaffold FastMCP servers from templates: start quickly with API wrappers, SQLite read-only database servers, or deterministic file processors.
  • Provide tools, resources, and prompts: expose MCP tool functions first, then add resources or prompts only when they add clear value.
  • Local validation and deployment-readiness: inspect, list, and call tools locally (including HTTP transport testing) before integrating into clients like Claude Code or Cursor.
  • Installation workflows for MCP clients: register servers into common MCP-aware clients after the local contract is stable.

Quick Start

Have the AI create a FastMCP Python server using the API wrapper template, then guide you through running an inspect and at least one tool call against the local server.

Frequently Asked Questions about fastmcp

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I build an MCP server in Python to expose custom tools?

Scaffold a FastMCP server from a template to expose Python tool functions, making them discoverable and callable by MCP clients or over HTTP.

What is the best way to provide read-only SQLite queries to an MCP client?

Provide read-only SQLite queries by applying the FastMCP SQLite template to expose safe database retrieval tools, then validate them locally before client integration.

Can I test MCP server tools locally before integrating with Claude Code or Cursor?

Test MCP server tools locally by running inspect, list, and call commands, including HTTP transport testing, before registering the server into MCP-aware clients.

How do I wrap a REST API for an MCP server deployment?

Wrap a REST API by using the FastMCP API wrapper template to expose endpoints as callable MCP tools, then validate the local contract before HTTP deployment.

Do I need to expose resources and prompts when building a FastMCP server?

Resources and prompts are not required; expose MCP tool functions first, then add resources or prompts only when they add clear value to the server's capabilities.

How do I document environment variables for MCP client installation?

Document environment variables during the client installation workflow, ensuring the server is registered into MCP-aware clients with all required configurations specified.