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prompt-regression

95 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

By agentscope-ai/OpenJudge (GitHub) · coding · 1,101 stars · scanned at commit 03c4445

Use when the user has changed a prompt (system prompt, RAG template, agent instruction, etc.) and wants to know whether the candidate is better or worse than the baseline. Also use when the user mentions prompt A/B testing, prompt comparison, prompt optimization validation, "did my prompt change help," or prompt regression testing. Outputs per-dimension win rates with statistical significance using OpenJudge PairwiseAnalyzer.

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

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

if [ -e ~/.agents/skills/'prompt-regression' ] || [ -L ~/.agents/skills/'prompt-regression' ]; then echo 'A skill folder named prompt-regression already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/agentscope-ai/OpenJudge' "$d" && git -C "$d" checkout --quiet '03c444567d5bb10429b10f4d2ad9df493b0edcc9' -- 'skills/eval_pipeline/06-prompt-regression' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/eval_pipeline/06-prompt-regression' ~/.agents/skills/'prompt-regression' && 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/'prompt-regression' ~/.claude/skills/'prompt-regression' (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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