tdd SKILL.md skillA
tdd from chrislacey89/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add chrislacey89/skills/tdd@git:20261025.2c2edc1Pins git:20261025.2c2edc1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- chrislacey89/skills
- Path
tdd/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261025.2c2edc1, committed Oct 25, 2026
- First version recorded
- Aug 24, 2026
- Size
- 15,600 bytes
- Repository stars
- 4
- License
- MIT
Invoked helper skill for strict red-green-refactor implementation, usually delegated from /execute or bug-fix work shaped by /triage-issue. Use when backend behavior or behavior-heavy frontend logic should be built test-first through public interfaces. Not for shaping, decomposition, vague implementation tasks, or primarily visual frontend work.
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
# Test-Driven Development ## Invocation Position This is an invoked helper skill, not the normal first stop in the feature pipeline. Use `/tdd` when backend implementation, bug-fix work, or behavior-heavy frontend logic should proceed through strict red-green-refactor cycles, usually because `/execute` delegated to it or a bug workflow produced a TDD-oriented fix plan. Frontend examples that fit well here include reducers, state machines, validation flows, accessibility-critical behavior, and reproducible regressions in a user flow. Frontend work that is primarily visual, layout-driven, styling-focused, or about interaction feel should usually stay on the direct implementation path with browser-based verification. Do not use it to replace shaping or decomposition. If the task is still unclear at the product, contract, or slice level, return to `/write-a-prd`, `/prd-to-issues`, or `/execute` first. ## Philosophy …
Read the whole file at its exact version.
How to install
mdr add chrislacey89/skills/tdd@sha256:659867952aebc521The line at the top of this page pins the label git:20261025.2c2edc1, 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_jj7r4usd6fsfohhw)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Aug 24, 2026 and Oct 25, 2026, about one every 12 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261025.2c2edc1 latest | 2026-10-25 | 2c2edc1 | 15,600 B | A | view · diff |
| git:20260830.d8ce263 | 2026-08-30 | d8ce263 | 15,547 B | A | view · diff |
| git:20260827.f4708f5 | 2026-08-27 | f4708f5 | 15,311 B | A | view · diff |
| git:20260826.7ee2194 | 2026-08-26 | 7ee2194 | 15,254 B | A | view · diff |
| git:20260826.20918a6 | 2026-08-26 | 20918a6 | 15,315 B | A | view · diff |
| git:20260824.536260c | 2026-08-24 | 536260c | 14,588 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 (15600 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
chrislacey89/skills · 4 stars · license MIT · pushed 2026-11-06 · branch prod
API
GET https://markdownregistry.com/api/v1/artifacts/art_jj7r4usd6fsfohhw GET https://markdownregistry.com/api/v1/resolve?ref=chrislacey89/skills/tdd GET https://markdownregistry.com/api/v1/blob/659867952aebc521b026894f022d122c907af2867fb471ca8b20eb081a477097
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 chrislacey89/skills
Every file in chrislacey89/skills