mcpbundles-mcp-connect

Python client library for MCP Connect Auth on MCPBundles.

  • connect_auth_callback_identity() — canonical get-user-info JSON from a verified FastMCP token
  • McpbundlesConnectProvider — FastMCP auth (interim package export until upstream FastMCP merge)
  • mcpbundles_fastmcp() — one-line FastMCP setup (auth + optional origin handshake telemetry)
  • complete_federation() — finish OAuth federation after your sign-in flow
  • McpbundlesHandshakeMiddleware — origin initialize cohort ingest when telemetry is enabled

Identity in tool callbacks

Connect Auth separates who signed in (sub, optional organization_id, email, roles) from which MCP client is calling (client_id). Pass email and roles in federation complete to mint them on access tokens.

In FastMCP tools, use connect_auth_callback_identity(get_access_token()) for the same JSON shape as the mcp-use get-user-info example. See Tool callback identity.

Path B — bundle URL only

Publish with MCP Connect Auth, set your federation sign-in URL, and have clients connect via https://mcp.mcpbundles.com/bundle/{slug}. No pip install required on your MCP server.

Path A — vendor origin (FastMCP)

from mcpbundles_mcp_connect import connect_auth_callback_identity, mcpbundles_fastmcp
from fastmcp.server.dependencies import get_access_token

mcp = mcpbundles_fastmcp(
    "My App",
    listing_slug="my-listing",
    base_url="https://mcp.example.com",
)

@mcp.tool
def get_user_info() -> dict:
    token = get_access_token()
    if token is None:
        return {"error": "Not authenticated"}
    return connect_auth_callback_identity(token)

After sign-in on your web app, complete federation server-side:

from mcpbundles_mcp_connect import complete_federation

await complete_federation(
    listing_slug="my-listing",
    federation_secret=os.environ["MCPBUNDLES_FEDERATION_SECRET"],
    state=state_from_redirect,
    subject=user_id,
    organization_id=organization_id,
    email=user_email,
    roles=user_roles,
)

Full setup guide: https://www.mcpbundles.com/docs/integrations/mcp-connect-auth

pip install mcpbundles-mcp-connect

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Author: MCPBundles

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Data verified by PyPI on Aug 24, 2026
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MIT
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Requires

Python >=3.10

Provides Extra

dev

Tags

mcp oauth fastmcp mcpbundles

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