How does the regression tester ensure my AI skills remain reliable after an update?

This skill provides a structured evaluation framework that allows your AI agent to automatically verify that SKILL.md updates don't break existing functionality by comparing agent outputs against defined 'gold' benchmarks.

Which AI agents or coding environments are compatible with this skill?

The skill is designed to work with leading AI coding tools including Claude Code, Cursor, and various Codex-based CLI agents that utilize SKILL.md or similar documentation formats.

What exactly is included in the purchase of the agent-skill-regression-tester?

You receive the complete regression testing logic, a template for creating your own evaluation test cases, and a guide on how to integrate the testing workflow into your existing development cycle.

Do I need a complex testing infrastructure to use this skill?

Setup is straightforward; once imported, you simply define your input/output expectations in a test file, and the skill provides the instructions for your agent to execute the comparison and report failures.

What types of SKILL.md files benefit most from automated regression testing?

It is highly effective for any skill where deterministic results are required, particularly for internal tools, data processing instructions, or complex formatting rules where subtle prompt changes can lead to unexpected regressions.

Works with the AI tools you already use

+20 more

+17 agents

Agent Skill Regression Tester

Free

11 installsSecurity scanned

agent-skill-regression-tester

Example session with this skill installed

Build a regression test suite for my commit-message-generator skill. I need to ensure it always follows the imperative mood and never includes JIRA keys in the subject.

Read your context and instructions
Compiled the agent--regression-tester

Created /tests directory for commit-message-generator.

Generated scenarios.yaml with 5 test cases (happy path, long diff, JIRA edge case).
Created deterministic_checks.py to validate regex formatting and char limits.
Set up run_tests.sh for CI integration.

Generated scenarios.yaml

Connects securely to your tools. The creator never sees your data.

About this skill

Teaches AI coding agents to build and run automated regression tests for SKILL.md files. When you update a skill that your team depends on, you need to know it still works — not just that it "looks right." This skill provides a structured eval framework that tests skills against known inputs and expected outputs, catching regressions before they silently break your agent's behavior. For engineering teams that maintain shared SKILL.md libraries and need deterministic confidence in every update.

How to install

Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.

~30 seconds

1
Download the ZIP
Free skills download straight away. Paid skills unlock right after purchase.
2
Unzip into your skills folder
Every agent reads skills from one folder on your machine. Drop the unzipped folder in there.
3
Ask your agent to use it
Restart the agent if it was already running. It picks the skill up automatically - no config needed.

Skills folder by agent

Click the path to copy it. Create the folder if it does not exist yet.

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11 installs

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