Agent Regression Evals plugin: what it installs and how to add it
Tests agent, prompt, model and tool changes for regressions using repeated trials, trajectory checks and statistical merge gates.
From the Marketplace: claude-code-skills marketplace
Install
> /plugin marketplace add alirezarezvani/claude-skills> /plugin install agent-regression-evals@claude-code-skillsRun both lines inside Claude Code: the first adds the marketplace, the second installs the plugin.
What is inside
- 1skill
- 2commands
- 1agent
About this plugin
The plugin turns repeated agent evaluation results into a merge decision. It checks whether tool-call paths match the expected rules, identifies flaky cases across trials, and compares baseline and candidate results using per-case averages, confidence intervals and an exact McNemar test. The gate can block changes for significant drops, critical-case regressions, missing cases or invalid quarantine entries.
Run the supplied slash commands with JSONL result files and a cases file, or invoke the deterministic Python scripts directly. The scripts support sample data and JSON output, and report pass@k, pass^k, Wilson intervals and trajectory deviations.
What's inside
- 1 skill:
agent-regression-evals - 2 commands:
/cs-agent-evalsand/cs-eval-gate - 1 agent:
cs-eval-gatekeeper - 3 references and a CI job example
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Skills, not plugins
Prefer a single skill for development work? 932 skills in the same category, each installed on its own.