tdd SKILL.md skillA
tdd from arbiterforge/codearbiter is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add arbiterforge/codearbiter/tdd@git:20261025.6e96d09Pins git:20261025.6e96d09 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- arbiterforge/codearbiter
- Path
core/surface/skills/tdd/SKILL.md- Versions recorded
- 15
- Latest version
- git:20261025.6e96d09, committed Oct 25, 2026
- First version recorded
- Jul 26, 2026
- Size
- 7,815 bytes
- Repository stars
- 152
- License
- AGPL-3.0
Verify authorized feature, fix, and refactor work with scoped obligations, regression-first fixes, behavioral checks, characterization baselines, coverage, and lint.
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
Select the verification approach before changing code. Keep the intended behavior,
observed results, and pending checks explicit throughout implementation.
## Pre-flight
Use the selected specification or inline criteria for a feature, the observed defect
and expected behavior for a fix, and the agreed surface plus existing behavior for a
refactor. Read applicable project instructions and the test, coverage, and lint
commands in `{{PROJECT_DIR}}/.codearbiter/tech-stack.md`. Follow
`{{PLUGIN_ROOT}}/includes/verification-boundary.md` for local versus hosted checks.
In an HTML-knowledge repository, `"$PY" "{{PLUGIN_ROOT}}/hooks/knowledge.py" relevant <paths>`
(or the plan task's `task-context`) returns those commands with the constraints and
components that govern the paths you will touch; otherwise read
`{{PROJECT_DIR}}/.codearbiter/tech-stack.md`, the security controls when the behavior
crosses a security boundary, and `.codearbiter/code-map.md` on demand
(`{{PLUGIN_ROOT}}/includes/knowledge.md`). A missing unrelated fact does not hold this work.
For artifact I/O, load `{{PLUGIN_ROOT}}/includes/artifacts.md`. Use the selected
…Read the whole file at its exact version.
How to install
mdr add arbiterforge/codearbiter/tdd@sha256:0bd6ba72760ef204The line at the top of this page pins the label git:20261025.6e96d09, 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_jx7ww7lfvkg2p4ok)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 15 versions of this file, between Jul 26, 2026 and Oct 25, 2026, about one every 6 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261025.6e96d09 latest | 2026-10-25 | 6e96d09 | 7,815 B | A | view · diff |
| git:20261016.a9f63fc | 2026-10-16 | a9f63fc | 7,480 B | A | view · diff |
| git:20261016.95e8e18 | 2026-10-16 | 95e8e18 | 17,858 B | A | view · diff |
| git:20261015.ad05225 | 2026-10-15 | ad05225 | 17,625 B | A | view · diff |
| git:20261014.24845e8 | 2026-10-14 | 24845e8 | 17,381 B | A | view · diff |
| git:20261004.4a578c5 | 2026-10-04 | 4a578c5 | 17,450 B | A | view · diff |
| git:20260926.2c7bcea | 2026-09-26 | 2c7bcea | 10,881 B | A | view · diff |
| git:20260917.8f29537 | 2026-09-17 | 8f29537 | 10,560 B | A | view · diff |
| git:20260917.2ea35d0 | 2026-09-17 | 2ea35d0 | 10,284 B | A | view · diff |
| git:20260915.43b1504 | 2026-09-15 | 43b1504 | 9,625 B | A | view · diff |
| git:20260808.362892a | 2026-08-08 | 362892a | 9,280 B | A | view · diff |
| git:20260805.9392446 | 2026-08-05 | 9392446 | 9,249 B | A | view · diff |
| git:20260729.f05d063 | 2026-07-29 | f05d063 | 8,205 B | A | view · diff |
| git:20260727.2d90a2c | 2026-07-27 | 2d90a2c | 7,799 B | A | view · diff |
| git:20260726.c9c5cbc | 2026-07-26 | c9c5cbc | 7,519 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 (7815 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
arbiterforge/codearbiter · 152 stars · license AGPL-3.0 · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jx7ww7lfvkg2p4ok GET https://markdownregistry.com/api/v1/resolve?ref=arbiterforge/codearbiter/tdd GET https://markdownregistry.com/api/v1/blob/0bd6ba72760ef2049659d92c8421b9ed2f1ada6d74ad3c200daeaf9bb7bf4dd0
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 arbiterforge/codearbiter
Every file in arbiterforge/codearbiter