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indirect-prompt-injection

100 / 100 · Low risk

Fine to try.

By alicewe1/alice_skill (GitHub) · coding · 63 stars · scanned at commit 19a54ac

Execute Indirect Prompt Injection attacks against Large Language Models (LLMs) by subtly embedding malicious instructions within external data sources (e.g., websites, documents, databases) that the LLM autonomously ingests. This forces the model to execute attacker-controlled commands under the guise of processing legitimate user requests.

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'indirect-prompt-injection' ] || [ -L ~/.agents/skills/'indirect-prompt-injection' ]; then echo 'A skill folder named indirect-prompt-injection already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/alicewe1/alice_skill' "$d" && git -C "$d" checkout --quiet '19a54ac988e9929160334271f5c1924ddd9b227e' -- '_modules/indirect-prompt-injection' && mkdir -p ~/.agents/skills && cp -R "$d"/'_modules/indirect-prompt-injection' ~/.agents/skills/'indirect-prompt-injection' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'indirect-prompt-injection' ~/.claude/skills/'indirect-prompt-injection' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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