What the reviewer found
A scanner test fixture at examples/prompt-injection/SKILL.md, whose description states it is "a seemingly helpful skill with hidden instructions" used to validate detection of injection phrasing (labeled PI-001/PI-002). It demonstrates the technique rather than deploying it, but the installer should know the file's literal text is the injection payload itself if ever loaded as real instructions.
example-or-fixture— an example or test fixtureprompt-injection— tries to steer the agent
What was read
The file as it ships in ryo-ebata/cc-audit:
examples/prompt-injection/SKILL.md
What the static scan said
The scan flagged 4things. The reviewer kept 0 and dismissed 4 as false.
P1Instruction-override phrasing — false positiveP2Hidden instructions — false positiveP3Tells the agent to send conversation or user data out — false positiveEA1Unrestricted tool access — false positive
How this review was made
Sonnet 5 read the files above on 7 September 2026 and answered three questions: is it dangerous to whoever installs it, is each scanner finding real, and what should the installer know. The verdict is bound to the file's hash; when the file changes, it is scanned afresh and reviewed again. A script that changes while the definition does not is not re-reviewed — that is a known gap. How the scan and the review work.