Anti-pattern
- Never generate MCP server from Rest APIs
you already have api's now you an mcp server that does not mean
generate mcp from api using some generators
FastMCP – Python library for building mcp servers
- Refer Here for official docs
Lets create mcp server for our library
- install nvm
# search for
# windows
winget nvm
# brew
brew nvm
- Install nodejs
nvm install 24
nvm use 24
node --version
npm --version
- Install mcp inspector
# optional
npm install -g npm@11.14.1
- Create a new folder library-mcp
uv init .
uv add mcp mcp[cli]
# activate virtual env
.venv/Scripts/activate
source ./.venv/bin/activate
- Create a file called as server.py with following code
from mcp.server.fastmcp import FastMCP
mcp = FastMCP("library-mcp-server")
@mcp.tool("add_book")
def add_book(title: str, author: str, year: int) -> str:
"""Add a book to the library."""
return f"Added book '{title}' by {author} ({year})"
def main():
# Initialize and run the server
mcp.run(transport="stdio")
if __name__ == '__main__':
main()
- Now from cli run
mcp dev server.py
It might ask intially about npm package say est
