About this checker
What this site does
mcpcheck.org validates a MCP manifest at a URL you provide. When you submit a URL, we fetch that single endpoint, plus any endpoint URLs the manifest itself declares. We don't crawl your site.
How to identify us in your logs
User-Agent: MCPCheckValidatorBot/1.0 (+https://mcpcheck.org/bot)All requests from this site set the User-Agent above.
Credentials handling
If you provide a Bearer token, it transits your browser → our edge → the endpoint you specified. The token lives only in memory for the duration of the validation run. We do not write it to disk, log it, include it in error messages, or include it in shared report URLs.
Reports generated with a credential are marked accordingly on the result page so you know the run was authenticated.
What we keep
- The URL you submitted (and its domain)
- A record of the validation and results
- A hashed IP for rate limiting
- Your User-Agent
- An opaque
cm_vidvisitor cookie
Report abuse
If this checker is hitting your site in a way you didn't expect, email report-abuse@mcpcheck.org and we'll investigate.