tdd SKILL.md skillC
tdd from ctaxnagomi/agent-kd-skill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ctaxnagomi/agent-kd-skill/tdd@git:20260826.54f6831Pins git:20260826.54f6831 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- C, 15 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ctaxnagomi/agent-kd-skill
- Path
skills/custom/tdd/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260826.54f6831, committed Aug 26, 2026
- First version recorded
- Aug 24, 2026
- Size
- 2,899 bytes
- Repository stars
- 3
- License
- none declared
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 TDD is the red → green loop. This skill is the reference that makes that loop produce tests worth keeping: what a good test is, where tests go, the anti-patterns, and the rules of the loop. ## What a good test is Tests verify behavior through public interfaces, not implementation details. Code can change entirely; tests shouldn't. A good test reads like a specification. ## Seams: where tests go A **seam** is the public boundary you test at: the interface where you observe behavior without reaching inside. Tests live at seams, never against internals. **Test only at pre-agreed seams.** Before writing any test, write down the seams under test and confirm them with the user. ## Anti-patterns - **Implementation-coupled**: mocks internal collaborators, tests private methods, or verifies through a side channel. - **Tautological**: the assertion recomputes the expected value the way the code does. - **Horizontal slicing**: writing all tests first, then all implementation. Work in **vertical slices** instead. ## Rules of the loop - **Red before green.** Write the failing test first, then only enough code to pass it. …
Read the whole file at its exact version.
How to install
mdr add ctaxnagomi/agent-kd-skill/tdd@sha256:b464ac4300da1ca7The line at the top of this page pins the label git:20260826.54f6831, 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_2dqbypipi7hstars)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Aug 24, 2026 and Aug 26, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260826.54f6831 latest | 2026-08-26 | 54f6831 | 2,899 B | C | view · diff |
| git:20260824.dfd64f3 | 2026-08-24 | dfd64f3 | 2,901 B | C | view · diff |
| git:20260824.da779f9 | 2026-08-24 | da779f9 | 1,837 B | C | view |
Audit of the latest version
- fail: Frontmatter declares a name
- fail: Frontmatter declares a description
- pass: Frontmatter block present
- pass: Size between 200 bytes and 200 KB (2899 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
ctaxnagomi/agent-kd-skill · 3 stars · license none declared · pushed 2026-10-14 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_2dqbypipi7hstars GET https://markdownregistry.com/api/v1/resolve?ref=ctaxnagomi/agent-kd-skill/tdd GET https://markdownregistry.com/api/v1/blob/b464ac4300da1ca754ca59c63666cac4a43c326aa15e1f8fb1f0dc6e84a11f70
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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