common-tdd 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.
common-tdd from hoangnguyen0403/agent-skills-standard is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hoangnguyen0403/agent-skills-standard/common-tdd@git:20261030.a5465a6Pins git:20261030.a5465a6 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hoangnguyen0403/agent-skills-standard
- Path
.agents/skills/common/common-tdd/SKILL.md- Versions recorded
- 8
- Latest version
- git:20261030.a5465a6, committed Oct 30, 2026
- First version recorded
- Apr 23, 2026
- Size
- 7,001 bytes
- Repository stars
- 583
- License
- MIT
Guides quality-first TDD for new behavior, bug fixes, and test changes. Selects the smallest test layer, proves a distinct regression risk, and runs bounded RED-GREEN-REFACTOR verification.
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
# Quality-First TDD ## **Priority: P0 (CRITICAL)** A passing test is insufficient; the test must prove an owned behavior and a distinct plausible fault. ## Choose the mode - **New behavior:** strict RED -> GREEN -> REFACTOR. Do not write production code before the expected RED. If implementation preceded tests, report original RED as `NOT RUN`; never manufacture fake RED by deleting guards or falsifying logs. - **Legacy or bug fix:** characterize only when needed, then reproduce the intended change as a failing regression (RED). Frozen old-revision proof against a pre-repair snapshot is valid regression evidence when explicitly labeled as `frozen_snapshot_red`. Preserve unrelated existing code; do not delete it merely because it predates the test. ## Before writing a test Compare against the existing suite before adding or removing cases. Ensure the scenario is not already covered upstream or in nearby layers. Preserve justified cross-layer tests when layers catch distinct regression risks. Create one Test Intent Record per behavior/risk (see `references/quality-contract.md` for schema): - `id`: unique stable intent identifier …
Read the whole file at its exact version.
How to install
mdr add hoangnguyen0403/agent-skills-standard/common-tdd@sha256:37121b9191d91724The line at the top of this page pins the label git:20261030.a5465a6, 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_yswnccuwxx3n4s7q)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 8 versions of this file, between Apr 23, 2026 and Oct 30, 2026, about one every 27 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261030.a5465a6 latest | 2026-10-30 | a5465a6 | 7,001 B | A | view · diff |
| git:20261028.3146f69 | 2026-10-28 | 3146f69 | 4,633 B | A | view · diff |
| git:20261007.30cb771 | 2026-10-07 | 30cb771 | 3,912 B | A | view · diff |
| git:20260817.b5ee321 | 2026-08-17 | b5ee321 | 3,649 B | A | view · diff |
| git:20260714.6bf9b5e | 2026-07-14 | 6bf9b5e | 3,454 B | A | view · diff |
| git:20260615.50729d2 | 2026-06-15 | 50729d2 | 3,333 B | A | view · diff |
| git:20260610.774e8d6 | 2026-06-10 | 774e8d6 | 2,793 B | A | view · diff |
| git:20260423.b7ed028 | 2026-04-23 | b7ed028 | 2,643 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 (7001 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
hoangnguyen0403/agent-skills-standard · 583 stars · license MIT · pushed 2026-11-07 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_yswnccuwxx3n4s7q GET https://markdownregistry.com/api/v1/resolve?ref=hoangnguyen0403/agent-skills-standard/common-tdd GET https://markdownregistry.com/api/v1/blob/37121b9191d917248578fea0b231551985eece30fdd2ae34d48001c7c683a56f
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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