fastmcp/examples/auth/authkit_dcr/client.py
Jeremiah Lowin a8b100eb8c
Add JWT audience validation and RFC 8707 warnings to auth providers (#3204)
* Add JWT audience validation and RFC 8707 warnings to auth providers

* chore: Update SDK documentation

* Update AuthKit example README env var name

* Move RFC 8707 warnings inside default verifier guard

* chore: Update SDK documentation

---------

Co-authored-by: marvin-context-protocol[bot] <225465937+marvin-context-protocol[bot]@users.noreply.github.com>
2026-02-17 18:16:05 -05:00

33 lines
976 B
Python

"""OAuth client example for connecting to FastMCP servers.
This example demonstrates how to connect to an OAuth-protected FastMCP server.
To run:
python client.py
"""
import asyncio
from fastmcp.client import Client
from fastmcp.client.auth import OAuth
SERVER_URL = "http://127.0.0.1:8000/mcp"
async def main():
# AuthKit defaults DCR clients to client_secret_basic, which conflicts
# with how MCP SDKs send credentials. Force "none" to register as a
# public client and avoid token exchange errors.
auth = OAuth(additional_client_metadata={"token_endpoint_auth_method": "none"})
async with Client(SERVER_URL, auth=auth) as client:
assert await client.ping()
print("Successfully authenticated!")
tools = await client.list_tools()
print(f"Available tools ({len(tools)}):")
for tool in tools:
print(f" - {tool.name}: {tool.description}")
if __name__ == "__main__":
asyncio.run(main())