docs(mcp): add delegate_auth_to_upstream / PKCE passthrough - #120
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Documents the new `delegate_auth_to_upstream` flag for oauth2 MCP servers. Covers setup, how the PKCE passthrough flow works (with sequence diagram), fail-closed behavior, security trade-offs, and the config reference table. Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
docs/mcp_oauth.mddelegate_auth_to_upstream: trueflag forauth_type: oauth2MCP serversRelated PR
BerriAI/litellm#27834
Made with Cursor