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Authentication requiredReachable; initialization requires authentication.
Since Sep 14, 2026 — 9:00 PM (48 d ago)

An authentication challenge is availability, not an outage — the endpoint is reachable and answering. Passive observation records the challenge and any OAuth discovery metadata without ever authenticating. OAuth-authenticated contract monitoring is planned.

Recorded auth metadata
authMeta — as observed
{
  "httpStatus": 401,
  "wwwAuthenticate": "Bearer realm=\"https://mcp.buildkite.com\", error=\"access_denied\", error_description=\"Authentication required\", resource_metadata=\"https://mcp.buildkite.com/.well-known/oauth-protected-resource/mcp\"",
  "discovery": {
    "resource": "https://mcp.buildkite.com/mcp",
    "authorization_servers": [
      "https://mcp.buildkite.com"
    ],
    "scopes_supported": null
  }
}
100%
Availability · 30 days · 671 checks
563 ms
Latency (last observation)
—
Contract
—
Schema stable
0
Incidents · 30 days
—
Observed since

Availability — last 30 days

No failures Some failures Mostly failing Auth required No observations

Last observed 5 min ago by MCP Tools Edge Scanner · scheduled every 60 min

Authentication is now required Breaking Sep 14, 2026 — 9:00 PM
The endpoint stopped accepting unauthenticated initialization.
Verifiedinitialize returned HTTP 401.
InterpretationUnauthenticated clients can no longer connect and may require credentials or an OAuth flow.
Raw event details
{
  "httpStatus": 401,
  "wwwAuthenticate": "Bearer realm=\"https://mcp.buildkite.com\", error=\"access_denied\", error_description=\"Authentication required\", resource_metadata=\"https://mcp.buildkite.com/.well-known/oauth-protected-resource/mcp\"",
  "discovery": {
    "resource": "https://mcp.buildkite.com/mcp",
    "authorization_servers": [
      "https://mcp.buildkite.com"
    ],
    "scopes_supported": null
  }
}
Observed by MCP Tools Edge Scanner
Baseline captured — authentication required Informational Aug 6, 2026 — 5:05 AM
Endpoint is reachable; initialization requires authentication. Passive observation records availability, latency, and protocol behavior only.
Verifiedinitialize returned HTTP 401.
InterpretationAuthenticated contract monitoring can be added later (OAuth support planned).
Raw event details
{
  "httpStatus": 401,
  "wwwAuthenticate": "Bearer realm=\"https://mcp.buildkite.com\", error=\"access_denied\", error_description=\"Authentication required\", resource_metadata=\"https://mcp.buildkite.com/.well-known/oauth-protected-resource/mcp\"",
  "discovery": {
    "resource": "https://mcp.buildkite.com/mcp",
    "authorization_servers": [
      "https://mcp.buildkite.com"
    ],
    "scopes_supported": null
  }
}
Observed by MCP Tools Edge Scanner