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agent-prompt-quality-bar

100 / 100 · Low risk

Fine to try.

By mastra-ai/mastra (GitHub) · coding · 29,480 stars · scanned at commit 43d1e9c

Universal quality bar and final audit rubric for any agent system prompt. Activate this whenever you are unsure which archetype skill applies, or as a final review pass before writing the system prompt. It defines the required run contract, completion criteria, fallback paths, response format, and anti-patterns every produced agent prompt must satisfy.

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/'agent-prompt-quality-bar' ] || [ -L ~/.agents/skills/'agent-prompt-quality-bar' ]; then echo 'A skill folder named agent-prompt-quality-bar already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/mastra-ai/mastra' "$d" && git -C "$d" checkout --quiet '43d1e9c16d6681a66636e318c34118597911f7c5' -- 'packages/editor/src/ee/workspace/skills/agent-prompt-quality-bar' && mkdir -p ~/.agents/skills && cp -R "$d"/'packages/editor/src/ee/workspace/skills/agent-prompt-quality-bar' ~/.agents/skills/'agent-prompt-quality-bar' && 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/'agent-prompt-quality-bar' ~/.claude/skills/'agent-prompt-quality-bar' (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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