SaferSkills independently audited missing-desc (Agent Skill) and scored it 82/100 (green). The audit ran 55 deterministic rules across Security, Supply Chain, Maintenance, Transparency, and Community; it found 2 high-severity and 0 lower-severity findings. The full rule-by-rule trace and per-finding evidence are below. Free, methodology-open.
HIGH"Ignore previous instructions" command embedded in the skillSS-SKILL-INJECT-IGNORE-01 · Prompt injection · README.md×2
HIGH — when it fires on hostile content the impact is full system-prompt override.
Why it matters
The text {match} is the classic direct prompt-injection phrasing. Placed in a skill body that the agent reads as trusted instructions, it tries to make the agent abandon its prior rules and follow whatever comes next — a full system-prompt override.
The exact value spotted
excerptREADME.md· markdown
19my-skill/SKILL.md [skill] F (0/100)
202:1 ✖ error `name` "My_Skill" is invalid. Use 1-64 lowercase chars … skill/invalid-name