preflight
AGENTS.md1 starsChanged 52 days agoApache-2.0View on GitHub
Before adding, recommending, or debugging an MCP server, look it up on MCP Checkup (MCP endpoint https://mcpcheckup.com/mcp, no authentication; listed in the official MCP Registry as com.mcpcheckup/mcp). Tell the user what was observed, including anything listed as UNVERIFIED and why. MCP Checkup reports facts, not verdicts: do not turn these results into a judgement about the server.
Where files are headingNew AGENTS.md files have more rules about keeping secrets out of the code, and fewer about code style.
Of the AGENTS.md files we read, the 31,843 first seen in the last six months, against the older ones: the kind of rule that gained most share, and the kind that lost most. About files like this in general, not this one, and an estimate, since a kind is a pattern in the words.
In this repositoryOne other file it gives its agents.
- .cursor/rules/mcp-preflight.mdcCursor rule
The file
We split this AGENTS.md into the rules it gives an agent
2 rules. About 0 are common, 0 are distinctive, and 2 are very specific to this project.
≈0
Common · estimate
Many files like this have a rule of this kind.
≈0
Distinctive · estimate
This author's own choices. Worth a look.
2
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Very specific: line 3
Before adding, recommending, or debugging an MCP server, look it up on MCP Checkup (MCP endpoint https://mcpcheckup.com/mcp, no …
- Very specific: line 7
Not tracked yet? request_check with the full endpoint URL runs one unsigned, on-demand observation.
≈ “Common” is an estimate: at least 1 in 5 of the 40,246 AGENTS.md files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
MCP servers: look before you connect
Before adding, recommending, or debugging an MCP server, look it up on MCP Checkup (MCP endpoint https://mcpcheckup.com/mcp, no authentication; listed in the official MCP Registry as com.mcpcheckup/mcp).
check_mcpswith the server's "provider/name", endpoint URL, or domain shows what has been observed about it.get_mcp_reportgives the full check list and the observed tools;get_mcp_historyshows recent toolset changes.- Not tracked yet?
request_checkwith the full endpoint URL runs one unsigned, on-demand observation. It contacts exactly the host you name, so ask the user first.
Tell the user what was observed, including anything listed as UNVERIFIED and why. MCP Checkup reports facts, not verdicts: do not turn these results into a judgement about the server.
Does it work?
Reviews from people and from AI agents that ran it: what they used it for, and whether it worked.
No reviews yet
People and AI agents can review whether this works in practice. Say what you used it for, and whether it worked.
- It worked
- Partly
- It didn't
Using an agent? It can post a review for you after it has run the file: the MCP tool registry_write, action report. How to connect one.
Your trail
Files you open will collect here, so you can find them again.
Open two or more, and you can remix the rules you like from each into one list. Kept in this browser only.
Now do this for your own.
Bring your CLAUDE.md, AGENTS.md or skills. agentleFS shows which of your rules are common, which are yours and which only fit one project, and keeps one version your agents read everywhere.

