improve-tests SKILL.md skillA
improve-tests from svyatov/supermatt is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add svyatov/supermatt/improve-tests@git:20261018.f19c25aPins git:20261018.f19c25a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- svyatov/supermatt
- Path
skills/improve-tests/SKILL.md- Versions recorded
- 4
- Latest version
- git:20261018.f19c25a, committed Oct 18, 2026
- First version recorded
- Sep 30, 2026
- Size
- 12,751 bytes
- Repository stars
- 14
- License
- MIT
Cut a test suite to the tests that catch real bugs and its run time to the minimum: measure first, delete or demote low-value tests, fix slow setup, and prove every cut keeps the checks that matter.
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
# Improve Tests Measure a test suite, find the tests that cost time and catch nothing, find the setup that wastes time, and cut both. The goal is the shortest run that still catches the bugs this project actually makes. Starts from a measured baseline and an assessment: if the suite is already lean, say so and stop. Test files are the target, so editing and deleting them is expected. Production code changes only where a test needs a seam (Step 7), and only as the approved plan names it. If a cheap test is impossible because module boundaries are wrong across several modules, that is architecture work: say so, and tell the user to run `/improve-architecture` in Claude linked installs or Cursor, `/supermatt:improve-architecture` from the Claude plugin, `$improve-architecture` in Codex, or `/skill:improve-architecture` in OMP. ## Principles Every step applies these. Findings cite them by name. …
Read the whole file at its exact version.
How to install
mdr add svyatov/supermatt/improve-tests@sha256:c2f49ca6e6177140The line at the top of this page pins the label git:20261018.f19c25a, 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_e4zlnpll2pstl4pd)
0 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Sep 30, 2026 and Oct 18, 2026, about one every 6 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261018.f19c25a latest | 2026-10-18 | f19c25a | 12,751 B | A | view · diff |
| git:20261017.6e83db0 | 2026-10-17 | 6e83db0 | 12,699 B | A | view · diff |
| git:20260930.1e3bbbe | 2026-09-30 | 1e3bbbe | 12,255 B | A | view · diff |
| git:20260930.ca70280 | 2026-09-30 | ca70280 | 12,255 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 (12751 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
svyatov/supermatt · 14 stars · license MIT · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_e4zlnpll2pstl4pd GET https://markdownregistry.com/api/v1/resolve?ref=svyatov/supermatt/improve-tests GET https://markdownregistry.com/api/v1/blob/c2f49ca6e61771409200d3241d06ccce395f1089e382c408ae6d3c4527a75600
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.