tdd SKILL.md skillA
tdd from michael-denyer/pstack-claude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add michael-denyer/pstack-claude/tdd@git:20260923.4a3ef20Pins git:20260923.4a3ef20 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- michael-denyer/pstack-claude
- Path
plugins/pstack/skills/tdd/SKILL.md- Versions recorded
- 6
- Latest version
- git:20260923.4a3ef20, committed Sep 23, 2026
- First version recorded
- Jun 4, 2026
- Size
- 3,337 bytes
- Repository stars
- 3,263
- License
- MIT
Use only when the user explicitly asks for TDD, a failing test, or a regression test, OR when the bug has an obvious cheap local test target. Skip when the test path is unclear, expensive, integration-heavy, or not requested.
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
# TDD Bug Fix When fixing a bug with a clear, cheap test path, make the broken behavior executable before changing production code. The goal is a focused regression test that fails before the fix and passes after it. Do not force a test when it would be impractical. If the available test would require broad harness setup, brittle mocks, slow end-to-end infrastructure, production-only state, vague reproduction steps, or large unrelated fixture churn, skip adding a new test and use the closest useful verification instead. ## Workflow 1. **Understand the bug.** Identify the intended behavior, current behavior, affected path, and smallest observable reproduction. 2. **Choose the narrowest executable check.** Prefer the closest unit, component, integration, or regression test already used for that codepath. If no practical test path is obvious, do not create one from scratch just to satisfy the workflow. 3. **Write the failing test first.** Add the smallest focused test that would have caught the bug. The test should encode intended behavior, not mirror the current implementation. …
Read the whole file at its exact version.
How to install
mdr add michael-denyer/pstack-claude/tdd@sha256:276f883002b7a0b9The line at the top of this page pins the label git:20260923.4a3ef20, 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_ecdaz4yl2pz3heip)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Jun 4, 2026 and Sep 23, 2026, about one every 22 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260923.4a3ef20 latest | 2026-09-23 | 4a3ef20 | 3,337 B | A | view · diff |
| git:20260907.09f3a50 | 2026-09-07 | 09f3a50 | 3,730 B | A | view · diff |
| git:20260907.c81549e | 2026-09-07 | c81549e | 3,806 B | A | view · diff |
| git:20260827.7ac420e | 2026-08-27 | 7ac420e | 3,581 B | A | view · diff |
| git:20260704.1d791c8 | 2026-07-04 | 1d791c8 | 3,505 B | A | view · diff |
| git:20260604.d869e0a | 2026-06-04 | d869e0a | 3,536 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 (3337 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
michael-denyer/pstack-claude · 3,263 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ecdaz4yl2pz3heip GET https://markdownregistry.com/api/v1/resolve?ref=michael-denyer/pstack-claude/tdd GET https://markdownregistry.com/api/v1/blob/276f883002b7a0b9be4ec982d0752fc68eaceed8e6db502316a87aa4600d152e
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.
More from michael-denyer/pstack-claude
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