Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden of behavioral disclosure. The description is minimal and doesn't explain what 'credentials status' reports (valid/invalid, expiry), whether it makes network calls, whether it requires prior authentication setup, or what a failure looks like. For a status-checking tool with zero annotation coverage, this is underspecified.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.