Redacted excerpt; full evidence withheld.

$ cd <host-path> && git log -1 --format=%H 2>/dev/null; ls -la; cat README.md 2>/dev/null | head -200
exit: 0
ss --call-all to include it
  ...
  FAIL smoke_unknown_tool: reported a tool execution error (isError) for a nonexistent tool — the spec's unknown-tool example is a protocol error, and an isError result claims the tool exists and ran
Gate failed — --smoke: 1 smoke check(s) failed
```

A failed smoke check exits `4` and never changes the score. By default only
tools annotated `readOnlyHint: true` are called; `--call-all` includes the
rest, so use it only on a server you own.
More: [smoke mode](https://docs.mcpscore.dev/smoke-mode).
[excerpt truncated]