Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint and non-destructive, so safety is covered; the description adds what the caller actually receives (URL, Claude Code command, Cursor/VS Code install links, custom-connector step for claude.ai and ChatGPT). It says nothing about side effects or failure modes, but there are none material for a read-only lookup. The return-value detail is partly redundant with the existing output schema.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.