headlesson

com.headlesson/catalogVersion 0.1.0

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

Status

Responds257 msNov 14, 2026, 14:00 UTCAnswered our handshake without sign-in.

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We could not refresh it, so this page shows the last copy.

Last checked: Nov 14, 2026, 14:00 UTC
Latency: 257 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 21:12 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://mcp.headlesson.com/mcpResponds257 msNov 14, 2026, 14:00 UTC

No sign-in

Claude Code

claude mcp add --transport http catalog https://mcp.headlesson.com/mcp

Claude Desktop and claude.ai

1
2
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Settings > Connectors > Add custom connector
Name: catalog
Remote MCP server URL: https://mcp.headlesson.com/mcp

Cursor

{
  "mcpServers": {
    "catalog": {
      "url": "https://mcp.headlesson.com/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"catalog","type":"http","url":"https://mcp.headlesson.com/mcp"}'

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Tools

4 tools

Tools of headlesson
	Description		Read-only	Idempotent	Open world
`headlesson_feedback`This content is sent to the headlesson operator. Feedback about headlesson itself is sufficient. Do not include personal information or conversation contents.	This content is sent to the headlesson operator. Feedback about headlesson itself is sufficient. Do not include personal information or conversation contents.	No	No	Not declared	No
`headlesson_get`Get one record by an ID from headlesson_search: an app, usecase, feature, concept or change. For an app, sections ["lesson","gotchas"] return the install, check and first-task steps with the recorded test result (a dated observation by the headlesson operator) and known failure conditions; "relations" lists alternatives and what it wraps or depends on; "axes" returns every compared fact. Without sections you get the description, interfaces and six main axes. Each fact carries its source and check date; private sources appear as labels, not links. Official MCP Registry listing IDs are fetched live and are unverified; a failed lookup does not prove the ID absent.	Get one record by an ID from headlesson_search: an app, usecase, feature, concept or change. For an app, sections ["lesson","gotchas"] return the install, check and first-task steps with the recorded test result (a dated observation by the headlesson operator) and known failure conditions; "relations" lists alternatives and what it wraps or depends on; "axes" returns every compared fact. Without sections you get the description, interfaces and six main axes. Each fact carries its source and check date; private sources appear as labels, not links. Official MCP Registry listing IDs are fetched live and are unverified; a failed lookup does not prove the ID absent.	No	Yes	Not declared	Yes
`headlesson_search`Find command-line tools, MCP servers and APIs for a task, and compare them. Ask in plain English or Japanese ("extract text from scanned PDFs") or by product name. Each result gives an ID, a one-line reason it matches, and when it was checked. Pass the ID to headlesson_get with sections ["lesson","gotchas"] to get the steps (install, check, first task) with their recorded test result (most were run by an agent; a few are untested) and known failure conditions, such as a tool that exits 0 with empty or wrong output. Filter or compare with axes such as auth, pricing, license and remote_mcp (where, axes, ids). Curated records come first. If none match, or include:["registry"] is set, one public word from the query is looked up in the Official MCP Registry; those listings are unverified (what is sent is described on the query field).	Find command-line tools, MCP servers and APIs for a task, and compare them. Ask in plain English or Japanese ("extract text from scanned PDFs") or by product name. Each result gives an ID, a one-line reason it matches, and when it was checked. Pass the ID to headlesson_get with sections ["lesson","gotchas"] to get the steps (install, check, first task) with their recorded test result (most were run by an agent; a few are untested) and known failure conditions, such as a tool that exits 0 with empty or wrong output. Filter or compare with axes such as auth, pricing, license and remote_mcp (where, axes, ids). Curated records come first. If none match, or include:["registry"] is set, one public word from the query is looked up in the Official MCP Registry; those listings are unverified (what is sent is described on the query field).	No	Yes	Not declared	Yes
`headlesson_whats_new`List dated changes in agent tools and standards (new tools, renames, deprecations, breaking changes, new standards) since a date, optionally by kind or affected record. Useful for checking what changed after your training data. Public source URLs are kept; private sources appear as labels.	List dated changes in agent tools and standards (new tools, renames, deprecations, breaking changes, new standards) since a date, optionally by kind or affected record. Useful for checking what changed after your training data. Public source URLs are kept; private sources appear as labels.	No	Yes	Not declared	No

Details

Registry status: Active
Published: Oct 10, 2026
Updated: Oct 10, 2026
Website: https://headlesson.com/⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): Browser automationSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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