fastmcp-server
Installation
SKILL.md
Authoring MCP servers with FastMCP
Find the current API
Check the project's installed FastMCP version and dependency constraints.
Fetch the documentation index and read the
relevant pages for that version. The index includes versioned documentation;
select /v3/ pages for FastMCP 3 and unversioned pages for FastMCP 4. Read
individual pages through their .md URLs instead of loading llms-full.txt.
For APIs newer than the installed release, check that release's source or
signatures. Preserve the project's dependency constraints unless an upgrade is
part of the request. For a new project, check the current stable release before
choosing a dependency.
Use the standalone fastmcp package. Its API differs from
mcp.server.fastmcp in the Python MCP SDK.