improving-test-suites SKILL.md skillA

This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.

improving-test-suites from b-mendoza/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add b-mendoza/agent-skills/improving-test-suites@git:20261014.68ae5f8

Pins git:20261014.68ae5f8 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
b-mendoza/agent-skills
Path
.agents/skills/improving-test-suites/SKILL.md
Versions recorded
5
Latest version
git:20261014.68ae5f8, committed Oct 14, 2026
First version recorded
Jul 28, 2026
Size
10,326 bytes
Repository stars
3
License
none declared

Improve existing test suites into minimal, high-signal behavior-focused harnesses with approval-before-mutation, conformance checks, guarded validation, bounded repair, and auditable handoff statuses. Use when asked to improve, trim, rewrite, delete, review, or harden tests around public contracts, business logic, schemas, security behavior, failures, edge cases, readability, or maintainability.

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

# Improving Test Suites

Portable orchestrator that turns a named test suite into the smallest useful behavior-focused harness. Tests are executable contracts: a test earns its place when it would fail for a real break in public behavior, validation, security, meaningful failure handling, or a production-relevant edge case.

The orchestrator serves confidence and safety, not test count. It delegates raw work to subagents, keeps compact reports, gates destructive changes, verifies approved behavior coverage survived, and returns exactly one handoff status.

Portable target: OpenCode and Claude Code. Plain Markdown links and minimal frontmatter only. If the runtime cannot spawn subagents, execute each named definition inline as a strictly scoped pass, then retain only its report.

## Inputs

| Input               | Required            | Example                                            |
| ------------------- | ------------------- | -------------------------------------------------- |
| `TARGET_TEST_FILES` | Yes                 | `tests/test_billing.py`, `tests/api/`              |
| `USER_GOAL`         | No                  | `reduce brittle implementation-coupled tests`      |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add b-mendoza/agent-skills/improving-test-suites@sha256:9b9bba9261ffe0a7

The line at the top of this page pins the label git:20261014.68ae5f8, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_tzvcrvtuuvu2iozs.svg)](https://markdownregistry.com/a/art_tzvcrvtuuvu2iozs)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Jul 28, 2026 and Oct 14, 2026, about one every 19 days.

versioncommittedcommitsizeaudit
git:20261014.68ae5f8 latest2026-10-14 68ae5f8 10,326 BA view · diff
git:20261014.83f4f642026-10-14 83f4f64 8,382 BA view · diff
git:20261014.cfd914c2026-10-14 cfd914c 8,407 BA view · diff
git:20260806.30fa5982026-08-06 30fa598 8,453 BA view · diff
git:20260728.b4db0842026-07-28 b4db084 8,579 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (10326 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

GitHub

b-mendoza/agent-skills · 3 stars · license none declared · pushed 2026-10-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_tzvcrvtuuvu2iozs
GET https://markdownregistry.com/api/v1/resolve?ref=b-mendoza/agent-skills/improving-test-suites
GET https://markdownregistry.com/api/v1/blob/9b9bba9261ffe0a7bed566f4d75fe8817a7c84122959996908b0b634850054dd

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.

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Other files named improving-test-suites

improving-test-suites SKILL.md skill
b-mendoza/agent-skills · skills/improving-test-suites/SKILL.md · Improve existing test suites into minimal, high-signal behavior-focused harnesses with approval-before-mutation…
git:20261014.1603723 · audit A · 3 stars

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