Redacted excerpt; full evidence withheld.

$ cd <host-path> && ls -la && cat README.md 2>/dev/null | head -300
exit: 0
urther tool, `list_search_console`, registers only where the Google Search Console integration is enabled. A tool that always answers 404 is worse than an absent one: an agent picks it for a task it cannot do and spends a turn failing.

## Three rules the tools enforce

1. **A null rate means "not enough answers yet", never zero.** Rendering it as 0% reports a collapse that did not happen.
2. **Engines are never averaged.** They disagree; a mean describes no real surface.
3. **An empty findings list does not mean nothing changed.** `list_alerts` says so in the payload, not just the description.

Every tool that reports a measurement carries these rules in its own description, because an agent reads the tool, not the README.

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