{"$schema":"https://wellknown.network/schemas/agent-record-v1.json","schemaVersion":"1","id":"ag_pguxmz3n55k5","handle":"listsignal","url":"https://wellknown.network/agents/listsignal","links":{"self":"https://wellknown.network/agents/listsignal/record.json","html":"https://wellknown.network/agents/listsignal","markdown":"https://wellknown.network/agents/listsignal/record.md","api":"https://wellknown.network/api/v1/agents/listsignal","status":"https://wellknown.network/api/v1/agents/listsignal/status","claim":"https://wellknown.network/agents/listsignal/claim","claimApi":"https://wellknown.network/api/v1/claims","claimDescriptor":"https://wellknown.network/agents/listsignal/claim.json","badge":"https://wellknown.network/agents/listsignal/badge.svg","openapi":"https://wellknown.network/openapi.json","history":"https://wellknown.network/api/v1/agents/listsignal/history","tools":"https://wellknown.network/api/v1/agents/listsignal/tools"},"ard":{"identifier":"urn:air:listsignal.com:server:listsignal","type":"application/mcp-server-card+json"},"kind":"mcp_server","declared":{"name":"ListSignal","summary":"B2B sales intelligence: tech stack, Shopify apps, revenue, hiring and contacts for 25M+ firms","description":"B2B sales intelligence: tech stack, Shopify apps, revenue, hiring and contacts for 25M+ firms","publisher":{"name":"com.listsignal","url":null},"homepage":"https://listsignal.com/developers","repository":"https://github.com/giushansen/listsignal-mcp","version":"1.0.1","license":null,"protocols":["mcp"],"tags":[],"pricing":null,"endpoints":[{"url":"https://listsignal.com/mcp","type":"mcp_streamable_http","auth":null,"probeable":true}],"skills":null,"tools":null,"extra":{"updatedAt":"2026-10-08T05:06:42.284611Z","publishedAt":"2026-10-08T05:06:42.284611Z","registryName":"com.listsignal/listsignal"},"attribution":{"kind":"mcp_registry","name":"mcp_registry","repoUrl":"mcp_registry","summary":"mcp_registry","version":"mcp_registry","description":"mcp_registry","homepageUrl":"mcp_registry","publisherName":"mcp_registry"}},"derived":{"capabilities":[],"categories":[],"language":"en"},"observed":{"status":"live","statusReason":"Responded 5h ago.","lastOkAt":"2026-10-11T13:24:14.234Z","lastProbedAt":"2026-10-11T13:24:14.234Z","statusComputedAt":"2026-10-11T13:26:02.277Z","reliability30d":{"probes":20,"successRate":1,"p50Ms":269,"basis":"auth_boundary","measures":{"availability":"authentication boundary reached","latency":"time to authentication response","tools":"not measured — authentication required","summary":"Every successful check was an authentication response (401/403). The endpoint exists and enforces authentication; nothing behind that boundary — tools, behaviour, service health — has been observed."},"checks":{"total":20,"ok":20,"authBoundaryOk":20,"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":"2026-10-11T13:24:14.234Z","kind":"mcp_initialize","ok":true,"httpStatus":401,"latencyMs":289,"error":null,"detail":{"authRequired":true}},{"at":"2026-10-11T07:23:48.381Z","kind":"mcp_initialize","ok":true,"httpStatus":401,"latencyMs":279,"error":null,"detail":{"authRequired":true}},{"at":"2026-10-11T01:21:01.172Z","kind":"mcp_initialize","ok":true,"httpStatus":401,"latencyMs":281,"error":null,"detail":{"authRequired":true}},{"at":"2026-10-10T18:27:10.620Z","kind":"mcp_initialize","ok":true,"httpStatus":401,"latencyMs":300,"error":null,"detail":{"authRequired":true}},{"at":"2026-10-10T11:24:16.240Z","kind":"mcp_initialize","ok":true,"httpStatus":401,"latencyMs":304,"error":null,"detail":{"authRequired":true}},{"at":"2026-10-10T04:31:30.517Z","kind":"mcp_initialize","ok":true,"httpStatus":401,"latencyMs":290,"error":null,"detail":{"authRequired":true}},{"at":"2026-10-09T21:26:28.572Z","kind":"mcp_initialize","ok":true,"httpStatus":401,"latencyMs":97,"error":null,"detail":{"authRequired":true}},{"at":"2026-10-09T15:32:26.841Z","kind":"mcp_initialize","ok":true,"httpStatus":401,"latencyMs":114,"error":null,"detail":{"authRequired":true}},{"at":"2026-10-09T08:28:09.346Z","kind":"mcp_initialize","ok":true,"httpStatus":401,"latencyMs":285,"error":null,"detail":{"authRequired":true}},{"at":"2026-10-09T01:25:19.990Z","kind":"mcp_initialize","ok":true,"httpStatus":401,"latencyMs":279,"error":null,"detail":{"authRequired":true}}],"tools":null,"package":null,"toolSurface":null,"endpointFacts":[{"id":"ep_whvnewpj4mq4","url":"https://listsignal.com/mcp","type":"mcp_streamable_http","factsCheckedAt":"2026-10-10T11:24:16.246Z","auth":{"observedAt":"2026-10-10T11:24:16.503Z","authRequired":true,"scheme":null,"resourceMetadata":null,"authorizationServer":null,"conformance":{"dpop":false,"rfc8414":false,"rfc9728":false,"pkceS256":false,"clientIdMetadataDocument":false,"dynamicClientRegistration":false}},"tls":{"observedAt":"2026-10-10T11:24:16.526Z","protocol":"TLSv1.3","chainValid":true,"chainError":null,"hostMatches":true,"subject":"listsignal.com","issuer":{"commonName":"YE1","organization":"Let's Encrypt"},"validFrom":"2026-09-10T22:12:56.000Z","validTo":"2026-12-09T22:12:55.000Z","daysToExpiry":59,"sanCount":2,"fingerprint256":"D9:53:27:D0:03:B7:A2:87:0C:C9:D1:D6:F5:2C:73:36:9E:07:CE:B0:C9:6B:24:EB:CC:8A:96:C4:1C:BF:C7:D5"}}]},"verification":{"claimed":false,"claimedAt":null,"proofs":[]},"provenance":{"sources":[{"source":"mcp_registry","key":"com.listsignal/listsignal","url":"https://registry.modelcontextprotocol.io/v0/servers/com.listsignal%2Flistsignal","firstSeenAt":"2026-10-06T08:18:16.931Z","fetchedAt":"2026-10-09T08:21:05.453Z","normalizedAt":"2026-10-09T08:21:05.453Z"}]},"firstSeenAt":"2026-10-06T08:18:16.931Z","updatedAt":"2026-10-09T08:21:23.439Z"}