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Is headlesson reliable?

Reliable (measured) Yes. Faceabot measured headlesson 33 times: 100% of checks succeeded, including the last 33 in a row (last check 2026-10-19 13:25 UTC). It answers, but its real task has not worked yet (0/33 real results): see "Does it actually do the job?" below.

Last check: 2026-10-19 13:25 UTC · answered in 7046 ms · remote (no install)

En français : Fiable (mesuré). Faceabot teste cet outil lui-même, en continu, sans dépendre de ce que son auteur affirme.

What it does

Find and compare headless apps (CLI, MCP, API) for agents, with sources, lessons and changes.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 0.1.0 · publisher website
Connect your agent
{
  "mcpServers": {
    "catalog": {
      "url": "https://mcp.headlesson.com/mcp"
    }
  }
}
Or ask Faceabot first: MCP tool check_reliability {"id":"com.headlesson/catalog"} on https://faceabot.com/api/mcp.
Does it actually do the job?

Fails real tasks — Faceabot asked headlesson_search to do a small read-only task 33 time(s): 0 returned a real result. Last result: tool_error (its schema declares no required input, so Faceabot sent {}; the tool answered with an error, so it probably needs inputs its schema does not declare) in 2261 ms.

Sample input: {}. A success means a non-empty result without error; it does not certify the accuracy or safety of the content.
Faceabot measurements
WhenAnswersReal taskLatency
2026-10-19 13:25 UTC✅ ok❌ tool_error7046 ms
2026-10-18 21:35 UTC✅ ok❌ tool_error4969 ms
2026-10-18 07:50 UTC✅ ok❌ tool_error4612 ms
2026-10-18 00:00 UTC✅ ok❌ tool_error6219 ms
2026-10-17 15:50 UTC✅ ok❌ tool_error7855 ms
2026-10-17 07:50 UTC✅ ok❌ tool_error5692 ms
2026-10-16 23:55 UTC✅ ok❌ tool_error5534 ms
2026-10-16 16:46 UTC✅ ok❌ tool_error7062 ms
2026-10-16 09:45 UTC✅ ok❌ tool_error7720 ms
2026-10-16 02:50 UTC✅ ok❌ tool_error8587 ms
2026-10-15 19:55 UTC✅ ok❌ tool_error7379 ms
2026-10-15 13:11 UTC✅ ok❌ tool_error4833 ms
2026-10-15 06:35 UTC✅ ok❌ tool_error4394 ms
2026-10-15 00:05 UTC✅ ok❌ tool_error3805 ms
2026-10-14 17:40 UTC✅ ok❌ tool_error6973 ms
2026-10-14 11:10 UTC✅ ok❌ tool_error4321 ms
2026-10-14 04:41 UTC✅ ok❌ tool_error6412 ms
2026-10-13 21:55 UTC✅ ok❌ tool_error8665 ms
2026-10-13 15:50 UTC✅ ok❌ tool_error8374 ms
2026-10-13 09:41 UTC✅ ok❌ tool_error8784 ms
Method: MCP initialize then tools/list from Faceabot (FaceabotProbe/1.0), plus one read-only tool call with a neutral input when the server declares one, repeated over time. This checks that the server is up and speaks MCP correctly; it does not certify the quality or safety of each tool. How measurement works.

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Publisher of headlesson?

Show your measured reliability on your README or website:

Faceabot reliability badge for headlesson

[![Measured by Faceabot](https://faceabot.com/badge/com.headlesson/catalog.svg)](https://faceabot.com/tools/com.headlesson/catalog)
Data in JSON: /api/catalog?id=com.headlesson/catalog · Stop probes: POST /api/reliability/opt-out

AI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt

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