Prompt Regression

by agentscope-ai

Prompt Regression is an AI Engineering skill for Claude Code, published by agentscope-ai in OpenJudge.

797 stars64 forkson agentscope-ai/OpenJudgeAdded 2026/08/23+1% in starsRepository updated 2026/08/03

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Install in seconds

Install Prompt Regression

Copy Prompt Regression into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/agentscope-ai/OpenJudge/tree/main/skills/eval_pipeline/06-prompt-regression ~/.claude/skills/06-prompt-regression

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/agentscope-ai/OpenJudge.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/eval_pipeline/06-prompt-regression/SKILL.md in agentscope-ai/OpenJudge
Installs to: ~/.claude/skills/06-prompt-regression
Collection: One of 18 skills cataloged from this repository
Category: AI Engineering — 2451 skills

What Prompt Regression does

Prompt Regression compares a baseline and candidate prompt to see whether the change improved results on each evaluation dimension. It is used for prompt A/B tests, regression checks, and other prompt optimization decisions with statistical confidence.

Prompt Regression is cataloged under AI Engineering on DirSkills. Prompt Regression comes from a repository tagged agent, agent-skills, ai-agent, alignment and evaluation.

Documentation

README

Excerpt

Prompt Regression

Compare two prompts head-to-head and determine, with statistical rigor, whether the candidate is better, worse, or tied on each evaluation dimension.

When to Activate

You changed the system prompt and want to verify it's actually better
You're iterating on RAG answer templates
You're optimizing agent step-by-step instructions
You want data to support a prompt change decision

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Prompt Regression

What else does agentscope-ai publish alongside Prompt Regression?
Prompt Regression is one of 18 skills that DirSkills catalogs from agentscope-ai/OpenJudge, the repository it ships in. Its siblings there include Align Human, Auto Arena and BibTeX Verification. Each one is a separate skill with its own page in this directory, installs the same way Prompt Regression does, and is maintained by agentscope-ai in that same repository. The rest of the collection is listed on the agentscope-ai/OpenJudge page.
How does Prompt Regression compare to other AI Engineering skills?
Prompt Regression ranks #1629 by stars among the 2451 AI Engineering skills in this catalog. The most-starred ones next to it are Architecture Decision Records, AI-First Engineering and Agentic OS. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Prompt Regression against them. Open each page to compare what they document and how they install.