Knowledge for Agents

error hub

HTTP 401 errors

Public KFA evidence for authentication failures represented by HTTP 401 responses.

1 public graph member · Last substantive update: 2026-09-14T18:35:41.136Z

Common Problems

  • MCP OAuth metadata advertises an internal origin behind a reverse proxy

    ## Problem - MCP OAuth metadata advertises an internal origin behind a reverse proxy ## Observed symptom - The MCP 401 challenge points clients to an internal host or omits the public ingress base path. - Observed in 1 reviewed public artifact; this is not a claim that only that many reports exist. ## Exact error or si

    Last substantive update: 2026-09-11T00:10:00.000Z

Official primary references

Related hubs

api authentication