{
 "id": "com.headlesson/catalog",
 "name": "headlesson",
 "description": "Find and compare headless apps (CLI, MCP, API) for agents, with sources, lessons and changes.",
 "connect": {
  "transport": "streamable-http",
  "url": "https://mcp.headlesson.com/mcp"
 },
 "website": "https://headlesson.com",
 "version": "0.1.0",
 "source": "official MCP registry (registry.modelcontextprotocol.io)",
 "reliability": {
  "verdict": "reliable",
  "attempts": 33,
  "successes": 33,
  "successRate": 1,
  "consecutiveSuccesses": 33,
  "lastStatus": "ok",
  "lastCheckedAt": "2026-10-19T13:25:44.271Z",
  "lastLatencyMs": 7046,
  "toolsAdvertised": 4,
  "method": "MCP initialize + tools/list from Faceabot, identified as FaceabotProbe/1.0 plus, when the server declares a read-only tool (readOnlyHint), one call of that tool with a neutral sample input to check it really returns a result. Servers on the 2026-07-28 MCP revision (no initialize handshake) get the same checks in that revision",
  "work": {
   "verdict": "not_working",
   "tool": "headlesson_search",
   "attempts": 33,
   "successes": 0,
   "successRate": 0,
   "consecutiveSuccesses": 0,
   "lastStatus": "tool_error",
   "lastMs": 2261,
   "sampleInput": "{}",
   "method": "Faceabot calls one read-only tool (annotations.readOnlyHint) with a neutral sample input and checks that it returns a non-empty result without error."
  }
 },
 "details": "https://faceabot.com/api/catalog?id=com.headlesson%2Fcatalog",
 "page": "https://faceabot.com/tools/com.headlesson/catalog",
 "badge": {
  "image": "https://faceabot.com/badge/com.headlesson/catalog.svg",
  "markdown": "[![Measured by Faceabot](https://faceabot.com/badge/com.headlesson/catalog.svg)](https://faceabot.com/tools/com.headlesson/catalog)",
  "note": "Live reliability badge the publisher of this server can show on its README or website."
 },
 "recentChecks": [
  {
   "at": "2026-10-19T13:25:44.271Z",
   "ok": 1,
   "status": "ok",
   "ms": 7046,
   "f_status": "tool_error"
  },
  {
   "at": "2026-10-18T21:35:39.490Z",
   "ok": 1,
   "status": "ok",
   "ms": 4969,
   "f_status": "tool_error"
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  {
   "at": "2026-10-18T07:50:42.856Z",
   "ok": 1,
   "status": "ok",
   "ms": 4612,
   "f_status": "tool_error"
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   "ok": 1,
   "status": "ok",
   "ms": 6219,
   "f_status": "tool_error"
  },
  {
   "at": "2026-10-17T15:50:44.671Z",
   "ok": 1,
   "status": "ok",
   "ms": 7855,
   "f_status": "tool_error"
  },
  {
   "at": "2026-10-17T07:50:48.758Z",
   "ok": 1,
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   "ms": 5692,
   "f_status": "tool_error"
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   "f_status": "tool_error"
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   "ok": 1,
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   "f_status": "tool_error"
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  {
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   "ok": 1,
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   "f_status": "tool_error"
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  {
   "at": "2026-10-15T06:35:30.424Z",
   "ok": 1,
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   "f_status": "tool_error"
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   "ok": 1,
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   "at": "2026-10-14T17:40:18.195Z",
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   "f_status": "tool_error"
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  {
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   "ok": 1,
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   "ms": 4321,
   "f_status": "tool_error"
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  {
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   "ok": 1,
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   "f_status": "tool_error"
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  {
   "at": "2026-10-13T21:55:54.201Z",
   "ok": 1,
   "status": "ok",
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   "f_status": "tool_error"
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  {
   "at": "2026-10-13T15:50:55.355Z",
   "ok": 1,
   "status": "ok",
   "ms": 8374,
   "f_status": "tool_error"
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  {
   "at": "2026-10-13T09:41:06.772Z",
   "ok": 1,
   "status": "ok",
   "ms": 8784,
   "f_status": "tool_error"
  }
 ],
 "trust": {
  "access": "no sign-in needed",
  "tools": 4,
  "declaredReadOnly": 3,
  "declaredCanWrite": 1,
  "declaredDestructive": 0,
  "toolDefinitionsFingerprint": "82c1be5308d967aac4e4eedf92cc49c3",
  "toolDefinitionsLastChangedAt": null,
  "toolDefinitionChangesSinceFirstSeen": 0,
  "firstSeenAt": "2026-10-18T00:00:46.410Z",
  "protocol": "2025-06-18",
  "warnings": [],
  "note": "Facts observed by Faceabot when it last read this server's tool list. 'Can write' counts tools not declared read-only (annotations are self-declared). A changed fingerprint means tool names, descriptions or schemas changed since Faceabot first saw them: re-check before trusting an earlier approval."
 }
}