open-webui/backend/open_webui
Alberto de la Cruz 718b226177
fix: discover MCP Protected Resource Metadata when server does not return 401 (#25980)
get_protected_resource_metadata() only attempted RFC 9728 discovery when
the anonymous `initialize` probe returned 401 with a WWW-Authenticate
header. Some remote MCP servers — notably Google's Gmail/Drive/Calendar
MCPs (gmailmcp.googleapis.com, etc.) — answer 200 to an anonymous
initialize, so OAuth scope and authorization-server discovery silently
failed and connections to them could not be established.

Run the discovery regardless of the probe's HTTP status: prefer the
resource_metadata URL from WWW-Authenticate when present, and otherwise
fall back to the RFC 9728 §4.2 well-known URIs. The trade-off is a couple
of extra well-known GETs during MCP connection setup for servers that
expose no PRM document; behavior for 401-responding servers is unchanged.
2026-06-29 04:34:36 -05:00
..
data refac: mv backend files to /open_webui dir 2024-09-04 16:54:48 +02:00
internal refac 2026-06-17 02:52:35 +02:00
migrations refac 2026-06-29 00:21:37 -05:00
models refac 2026-06-29 04:19:33 -05:00
retrieval fix: pass web search results to model when embedding & retrieval enabled (#25600) 2026-06-29 03:34:55 -05:00
routers refac 2026-06-29 04:31:43 -05:00
socket refac 2026-06-29 03:58:00 -05:00
static chore: format 2026-06-01 14:10:40 -07:00
storage refac: modernize type annotations (PEP 604 / PEP 585) 2026-05-12 17:10:15 +09:00
tools refac 2026-06-29 00:46:45 -05:00
utils fix: discover MCP Protected Resource Metadata when server does not return 401 (#25980) 2026-06-29 04:34:36 -05:00
__init__.py refac 2026-06-17 03:01:11 +02:00
alembic.ini fix: Alembic CLI commands from failing 2025-08-15 04:17:47 -04:00
config.py refac 2026-06-29 04:19:33 -05:00
constants.py refac: modernize type annotations (PEP 604 / PEP 585) 2026-05-12 17:10:15 +09:00
env.py refac 2026-06-29 03:42:36 -05:00
events.py refac 2026-06-25 15:56:10 +01:00
functions.py fix: emit [DONE] for AsyncGenerator pipe returns (#24763) 2026-05-19 22:07:56 +04:00
main.py refac 2026-06-29 02:57:58 -05:00
tasks.py refac: modernize type annotations (PEP 604 / PEP 585) 2026-05-12 17:10:15 +09:00