feat: adds FastMCP On-Behalf-Of token exchange Python example#81
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feat: adds FastMCP On-Behalf-Of token exchange Python example#81
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priley86
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Apr 27, 2026
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| # Add discovery metadata route | ||
| *auth0_mcp.auth_metadata_router().routes, |
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changed from:
# Add discovery metadata route
Mount("/", app=auth0_mcp.auth_metadata_router()),
# Add discovery metadata route
*auth0_mcp.auth_metadata_router().routes,
In Starlette, a Mount at / is a catch-all that intercepts everything. By unpacking the router into specific Route objects (.well-known/oauth-protected-resource, .well-known/oauth-authorization-server, etc.), these are evaluated first based on specificity. Remaining requests fall through to the MCP app Mount. This was previously causing issues when using the "Connect" button in MCP Inspector after successfully authenticating.
priley86
commented
Apr 27, 2026
| python = "^3.10" | ||
| python-dotenv = "^1.1.1" | ||
| mcp = "^1.27.0" | ||
| auth0-api-python = {path = "./auth0-api-python-obo", develop = true} |
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temporarily included until auth0-api-python is released.
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updated reference to 1.0.0b9 release: 06ac20b
This was referenced Apr 27, 2026
priley86
requested review from
adam-wang-okta-public,
agupta-ghub and
patrickkang
agupta-ghub
approved these changes
Apr 30, 2026
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🔑 FastMCP On-Behalf-Of Token Exchange Python MCP Quickstart updates
Builds on the SDK changes released in auth0-api-python which add On-Behalf-Of Token Exchange support in:
https://pypi.org/project/auth0-api-python/1.0.0b9/
With our FastMCP quickstarts (based on the existing FastMCP JS Python CTE quickstart).
Changes applied:
📘 Documentation
See the following docs-v2 updates for more details about how to use OBO:
auth0/docs-v2#1053
auth0/docs-v2#1074