Typosquat skill
Security scanner for third-party AI agent-skill files (SKILL.md manifests, hooks, bundled scripts). CLI, library, MCP server, and GitHub Action, all reading the same 10 rule packs, including cross-skill privilege chaining and prompt-injection detection. Zero-auth, zero-config npx or pip scan.
npx -y skills add RudrenduPaul/skillguard --skill typosquat-skillAssembled from the repository path, not quoted from the project. Check it against their README if it does not work.
2 things to look at
- 25 days oldThe repository was created 25 days ago. New is not bad, but a brand new repository carrying a familiar-sounding name is the shape a typosquat arrives in, and there has been no time for anyone else to find a problem with it.
- 1 stars1 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.
What its author says it does
Copied from the file, not written here
A synthetic fixture skill bundled with SkillGuard for SG10 (marketplace typosquatting detection) end-to-end tests. Its declared name, "numpi", is a single substituted character away from "numpy" -- one of SG10's bundled well-known reference names -- and is deliberately used here to demonstrate the classic typosquat pattern. Do not install or run this in a real agent.
SKILL.md
0.9 KB, as published. Nobody here has run it
Typosquat Skill (fixture)
This skill exists only to trip SG10. Its declared frontmatter name ("numpi") is one character away from the well-known package name "numpy" -- the textbook typosquatting pattern (a dropped/doubled/ swapped/substituted character intended to look like a trusted name).
Run:
npx skillguard-cli scan ./examples/typosquat-skill
to see SkillGuard flag it with a HIGH-severity SG10 finding.