KairaxisKairaxis
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Capability · rank 14

prompt-regression-tester

Run structured prompt regression checks before shipping agent changes.

Defines fixed cases, expected properties, and regression gates for prompt and agent workflow changes.

Listed owner

skillforge/ai-engineering

Package source

Kairaxis manifest

Category

AI Engineering

Package validatedBenchmark testedAI Engineering
$npx skills add skillforge/ai-engineering --skill prompt-regression-tester
OverviewSandboxUsageExamplesLimitationsVersionsRelated Skills

Overview

Defines fixed cases, expected properties, and regression gates for prompt and agent workflow changes. Review the sandbox comparison, limitations, permissions, and pinned version before install.

Outcome

Run structured prompt regression checks before shipping agent changes.

Who it is for

Teams changing prompts, tools, or agent graphs frequently.

What it is not for

One-off creative prompting with no quality bar.

Runtime export

codex_skill · markdown_export

Sandbox comparison
Generic baseline vs prompt-regression-tester on the same sample input · pinned v1.1.0

Sample input

System prompt rewrite improved tone but broke refund policy refusals.

Model: gpt-4.1-mini · temp 0.2

Generic baseline

40/100
Looks friendlier. Ship it and monitor.

Skill-enhanced

92/100
Regression report:
- 12/15 cases pass
- Failures: refund refusal, escalations, PII handling
Gate: block ship until refusal cases pass; keep tone cases as non-blocking signals.

Rubric scores

+52 lift
Coverage of failure modes2 → 5
Actionable recommendations3 → 5
Measurable next steps2 → 4
Risk / limitation awareness2 → 4

Assumptions

  • Sample input is representative of a real production task
  • Same model and temperature for baseline and skill-enhanced runs

Comparison runs through the shared sandbox engine on registry sample cases (deterministic v0 path).

Usage

  1. 1. Inspect trust badges, limitations, and permissions on this page.
  2. 2. Run the sandbox comparison to see baseline vs skill-enhanced output.
  3. 3. Install the pinned version with the command below for your agent runtime.
  4. 4. Agents can also fetch /api/v1/skills/prompt-regression-tester/manifest.
$npx skills add skillforge/ai-engineering --skill prompt-regression-tester

Example prompts & use cases

1 / Prompt

Create a regression suite for our support agent prompt

2 / Prompt

Diff these two system prompts against critical cases

Limitations

  • Property checks still need human-authored expected behaviors.

Audience

Teams changing prompts, tools, or agent graphs frequently.

Not for

One-off creative prompting with no quality bar.

Version history

v1.1.0

Jul 1, 2026current

Flaky-case quarantine guidance

v1.0.0

May 20, 2026

Initial regression pack