tdd-engineer SKILL.md skillA
tdd-engineer from felvieira/claude-skills-fv is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add felvieira/claude-skills-fv/tdd-engineer@git:20261030.813a629Pins git:20261030.813a629 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- felvieira/claude-skills-fv
- Path
skills/37-tdd-engineer/SKILL.md- Versions recorded
- 8
- Latest version
- git:20261030.813a629, committed Oct 30, 2026
- First version recorded
- May 4, 2026
- Size
- 15,015 bytes
- Repository stars
- 28
- License
- Apache-2.0
Test-Driven Development com red-green-refactor enforced. Trigger em: "tdd", "test-first", "red-green-refactor", "tracer bullet", "behavior test", "integration test", "tdd deep module", "interface design test".
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 Engineer — Red-Green-Refactor Enforced Skill que **forca** o ciclo TDD correto: 1 teste → 1 implementacao → repete. Combate o anti-padrao "escrevo 5 testes, depois 5 implementacoes" — que produz testes ruins (testam shape, nao behavior). Adaptado de [mattpocock/skills/engineering/tdd](https://github.com/mattpocock/skills/tree/main/skills/engineering/tdd) e integrado ao kit (skill 05 QA + `policies/vertical-slices.md`). ## Governanca Global Esta skill segue `GLOBAL.md`, `policies/execution.md`, `policies/quality-gates.md`, `policies/vertical-slices.md`, `policies/source-driven.md`, `policies/writing-clarity.md` e `policies/verification-before-completion.md` (cada passo red→green→refactor exige output verificável da mudança de estado). ## Filosofia > **Tests should verify behavior through public interfaces, not implementation details.** > **Code can change entirely; tests shouldn't.** **Bom teste** e integration-style: exercita codigo real atraves de API publica. Descreve **o que** o sistema faz, nao **como**. Le como spec — "user can checkout with valid cart" diz exatamente que capacidade existe. Sobrevive a refactor. ## Pattern: Approved Fixtures (v2.5.0+) …
Read the whole file at its exact version.
How to install
mdr add felvieira/claude-skills-fv/tdd-engineer@sha256:927c5de6d6d98413The line at the top of this page pins the label git:20261030.813a629, 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_ir2m2paylgmregvh)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 8 versions of this file, between May 4, 2026 and Oct 30, 2026, about one every 26 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261030.813a629 latest | 2026-10-30 | 813a629 | 15,015 B | A | view · diff |
| git:20260909.9a9f0e4 | 2026-09-09 | 9a9f0e4 | 15,269 B | A | view · diff |
| git:20260909.ef96ede | 2026-09-09 | ef96ede | 14,865 B | A | view · diff |
| git:20260611.9e5d744 | 2026-06-11 | 9e5d744 | 14,853 B | A | view · diff |
| git:20260527.ada0900 | 2026-05-27 | ada0900 | 13,280 B | A | view · diff |
| git:20260520.b523bd1 | 2026-05-20 | b523bd1 | 13,276 B | A | view · diff |
| git:20260516.e5a0f4a | 2026-05-16 | e5a0f4a | 10,446 B | A | view · diff |
| git:20260504.69b66d4 | 2026-05-04 | 69b66d4 | 10,315 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 (15015 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
felvieira/claude-skills-fv · 28 stars · license Apache-2.0 · pushed 2026-11-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ir2m2paylgmregvh GET https://markdownregistry.com/api/v1/resolve?ref=felvieira/claude-skills-fv/tdd-engineer GET https://markdownregistry.com/api/v1/blob/927c5de6d6d984137c71047f616b410f11f148b0d5afa25014f230969b18b793
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.