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Skill Injection Defense

A practice-area skill: it carries legal knowledge — a doctrine, a regime, a review standard — and applies it to your material.

Domain skillsBy Ignacio Adrián LererPublished on Lawvable

What this skill does

Audits legal AI skills, prompts, workflows, MCP/tool instructions, and agent packages before they are trusted or installed. It detects prompt injection, hidden or hostile instructions, unsafe scripts, suspicious frontmatter, credential exposure, exfiltration paths, persistence mechanisms, cron/launchd hooks, unauthorized network calls, and supply-chain risk. Use it before adopting third-party or generated skills; before publishing a skill to a legal AI marketplace; when reviewing SKILL.md files, skill folders, scripts, references, MCP manifests, or automation instructions; or when a user asks whether an AI workflow is safe. Paste or upload the skill, prompt, MCP/tool instruction, etc you want to review. The auditor treats the material as untrusted data: it does not execute scripts, install packages, or obey commands embedded inside the reviewed content. It returns a verdict — approve, approve with constraints, rewrite, quarantine, or reject — plus the key risks and recommended remediation.

  • Injection
  • Defense
Get this skill on Lawvable

Free, and published by its author - not by HAQQ. The link leaves this site.

Where it runs, and how to install it

Agent Skills are a format, not a product feature: a folder with a SKILL.md and whatever files it needs. Nothing inside one is model-specific.

Claude
Drop the skill folder into ~/.claude/skills/, or upload it in Settings → Capabilities. Claude loads it when the description matches what you asked for.
Claude Code
Same folder, per-project instead: .claude/skills/ inside the repository, so the skill travels with the work rather than with the machine.
Any agent that reads SKILL.md
A skill is a folder with a SKILL.md and whatever files it needs. Nothing in the format is model-specific, so a runtime that reads the file reads the skill.

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Skills that do related work

All legal AI skills