
Paste a tool's name, title, annotations and description, and get back every problem that would block review: missing titles or read-only hints, names over 64 characters, catch-all tools mixing GET and POST, hidden characters, and wording that instructs the model.
It also checks your listing text against the form limits (200-character one-liner, 2,000-character description, 5 categories) and returns the full submission checklist. Read-only, no account needed.
https://check.toolmonsters.com/mcpNone in the store listings or on the server