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The endpoint exists and enforces authentication; nothing behind that boundary — tools, behaviour, service health — has been observed."},"checks":{"total":46,"ok":46,"authBoundaryOk":46,"serviceOk":0,"note":"Counted from the observation rows for the window, checks of the server only (HTTP, A2A card, MCP initialize). ok = authBoundaryOk + serviceOk. `probes` is the sum of daily rollups and includes registry checks, so it can differ from `total`."}},"latestObservations":[{"at":"2026-10-10T06:26:28.446Z","kind":"mcp_initialize","ok":true,"httpStatus":401,"latencyMs":129,"error":null,"detail":{"authRequired":true,"wwwAuthenticate":"Bearer resource_metadata=\"https://mcp.signatureapi.com/.well-known/oauth-protected-resource/mcp\", scope=\"openid profile email offline_access user:org:read\""}},{"at":"2026-10-09T23:28:57.931Z","kind":"mcp_initialize","ok":true,"httpStatus":401,"latencyMs":119,"error":null,"detail":{"authRequired":true,"wwwAuthenticate":"Bearer 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user:org:read\""}}],"tools":null,"package":null,"toolSurface":null,"endpointFacts":[{"id":"ep_pbgwdtbwgcd7","url":"https://mcp.signatureapi.com/mcp","type":"mcp_streamable_http","factsCheckedAt":"2026-10-10T06:26:28.439Z","auth":{"observedAt":"2026-10-10T06:26:28.831Z","authRequired":true,"scheme":"Bearer","resourceMetadata":{"url":"https://mcp.signatureapi.com/.well-known/oauth-protected-resource/mcp","resource":"https://mcp.signatureapi.com/mcp","authorizationServers":["https://clerk.signatureapi.com"],"scopesSupported":["openid","profile","email","offline_access","user:org:read"]},"authorizationServer":{"url":"https://clerk.signatureapi.com/.well-known/oauth-authorization-server","issuer":"https://clerk.signatureapi.com","grantTypesSupported":["authorization_code","refresh_token","urn:ietf:params:oauth:grant-type:device_code"],"codeChallengeMethodsSupported":["S256"],"tokenEndpointAuthMethodsSupported":["client_secret_basic","none","client_secret_post"],"dynamicClientRegistration":true,"dpopSigningAlgValuesSupported":[],"clientIdMetadataDocumentSupported":null},"conformance":{"dpop":false,"rfc8414":true,"rfc9728":true,"pkceS256":true,"clientIdMetadataDocument":false,"dynamicClientRegistration":true}},"tls":{"observedAt":"2026-10-10T06:26:29.030Z","protocol":"TLSv1.3","chainValid":true,"chainError":null,"hostMatches":true,"subject":"mcp.signatureapi.com","issuer":{"commonName":"Amazon 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