tdd SKILL.md skillA
tdd from asymmetric-al/core is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add asymmetric-al/core/tdd@git:20261022.752a38bPins git:20261022.752a38b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- asymmetric-al/core
- Path
.agents/skills/tdd/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261022.752a38b, committed Oct 22, 2026
- First version recorded
- Apr 29, 2026
- Size
- 6,309 bytes
- Repository stars
- 370
- License
- AGPL-3.0
Test-driven development for substantive feature, bug-fix, and behavior-changing work. Use automatically when implementing features, fixing bugs, or changing behavior (red → green → refactor). Also use when the user mentions TDD, /tdd, /TDD, or red-green-refactor. Do not use for documentation-only, formatting-only, exact generated-mirror, or provenance-only changes.
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
## This repository (Asymmetric-al/core) These repo-owned sections are intentionally kept on top of the vendored Matt Pocock TDD skill. If upstream refreshes replace this file, reconcile this overlay before running `bun run skills:sync`. TDD is the default workflow for substantive Core implementation. Do not wait for the user to type `/tdd` or `/TDD`. `/tdd` and `/TDD` resolve to this same workflow. ### Triggers - Implementing a feature, bug fix, or behavior-changing refactor. - The user mentions TDD, `/tdd`, `/TDD`, or red-green-refactor. - Changing executable behavior, types, migrations, RLS, or generated-file contracts. Do **not** invent an artificial RED test for documentation-only edits, formatting-only edits, exact generated-mirror updates, or provenance-only metadata. ### Workflow 1. Understand the expected behavior from the request, existing tests, and nearest public or architectural seam. 2. Inspect current implementation and tests. Use an established public seam without waiting for the user to approve an obvious seam. 3. Add or update a test that expresses the desired behavior or reproduces the bug. …
Read the whole file at its exact version.
How to install
mdr add asymmetric-al/core/tdd@sha256:51efbe6bfca6fbe5The line at the top of this page pins the label git:20261022.752a38b, 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_qw7fgg5t5d3vyjo7)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Apr 29, 2026 and Oct 22, 2026, about one every 35 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261022.752a38b latest | 2026-10-22 | 752a38b | 6,309 B | A | view · diff |
| git:20260923.15c9348 | 2026-09-23 | 15c9348 | 6,230 B | A | view · diff |
| git:20260815.86f385a | 2026-08-15 | 86f385a | 4,655 B | A | view · diff |
| git:20260815.054ba63 | 2026-08-15 | 054ba63 | 4,242 B | A | view · diff |
| git:20260709.5ee8b28 | 2026-07-09 | 5ee8b28 | 3,213 B | A | view · diff |
| git:20260429.2f8fad0 | 2026-04-29 | 2f8fad0 | 4,395 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 (6309 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
asymmetric-al/core · 370 stars · license AGPL-3.0 · pushed 2026-11-06 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_qw7fgg5t5d3vyjo7 GET https://markdownregistry.com/api/v1/resolve?ref=asymmetric-al/core/tdd GET https://markdownregistry.com/api/v1/blob/51efbe6bfca6fbe56c913953a3f404cd87983e1b40607cb91bb69f3c9b3cb382
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 asymmetric-al/core
Every file in asymmetric-al/core