prompt-regression-suite SKILL.md skillA
prompt-regression-suite from mohitagw15856/pm-claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add mohitagw15856/pm-claude-skills/prompt-regression-suite@git:20261006.b9ea321Pins git:20261006.b9ea321 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- mohitagw15856/pm-claude-skills
- Path
plugins/pm-agentops/skills/prompt-regression-suite/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261006.b9ea321, committed Oct 6, 2026
- First version recorded
- Jul 1, 2026
- Size
- 5,299 bytes
- Repository stars
- 1,475
- License
- MIT
Design a regression test suite that catches an LLM feature getting worse when the prompt, model, or context changes. Use when asked to stop prompt changes breaking production, set up golden tests or CI gates for an LLM feature, or test a model/prompt upgrade before shipping it. Produces a golden case set, per-case pass criteria, CI gate thresholds, and a triage protocol for failures. For designing first-time evaluation of a new feature use ai-eval-plan instead.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Prompt Regression Suite Skill Every prompt tweak, model upgrade, and context change is a deploy. This skill designs the suite that runs on each one and answers a single question: *did anything that used to work stop working?* ## What This Skill Produces - A **golden case set**: curated inputs with per-case pass criteria - **Scoring methods** per case class (exact, rubric-judge, property checks) - **CI gate thresholds** — what blocks a merge vs. what warns - A **failure triage protocol** — flaky vs. regressed vs. golden-set-wrong ## Required Inputs Ask for (if not already provided): - **The feature and its contract** — what the LLM step receives and must produce - **What has broken before** (or nearly) — past incidents seed the best cases - **Real traffic examples** — 10-20 representative inputs, including ugly ones - **What triggers a run** — prompt edits, model bumps, retrieval changes, all of the above? ## Building the Golden Set Compose the set from four deliberate classes — not a random sample: | Class | Purpose | Share | |---|---|---| | **Core paths** | The 5-10 inputs that represent most real traffic | ~40% | …
Read the whole file at its exact version.
How to install
mdr add mohitagw15856/pm-claude-skills/prompt-regression-suite@sha256:a9a882ee76950289The line at the top of this page pins the label git:20261006.b9ea321, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_776zflolnyullad5)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jul 1, 2026 and Oct 6, 2026, about one every 96 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261006.b9ea321 latest | 2026-10-06 | b9ea321 | 5,299 B | A | view · diff |
| git:20260701.241d773 | 2026-07-01 | 241d773 | 5,117 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5299 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
mohitagw15856/pm-claude-skills · 1,475 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_776zflolnyullad5 GET https://markdownregistry.com/api/v1/resolve?ref=mohitagw15856/pm-claude-skills/prompt-regression-suite GET https://markdownregistry.com/api/v1/blob/a9a882ee769502892346a31db132f292d576d8ff6d83cf693763921b39047d85
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.