atdd skillA
atdd is agent-read markdown (skill) from swingerman/engineer: Use to write a feature's acceptance specs and generate its test pipeline — Checkpoint 3 of the DAE pipeline. The engineer-namespace entry point into the atdd plugin's acceptance workflow. Triggers — "/engineer.atdd", "write the spec", "Checkpoint 3", "formalize the ACs as specs", "generate the test pipeline"..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# atdd
The DAE pipeline's Checkpoint 3 (Spec) entry point. AC discovery (Checkpoint 2,
`discover-acs`) decided *what behaviors must work*; this step formalizes them as
a standard-Gherkin `spec.md` and generates the project-specific test pipeline.
This skill is a **thin bridge**: the acceptance workflow itself lives in the
`atdd` plugin (`atdd:atdd`). `engineer.atdd` wraps it with the DAE checkpoint
contract — the entry gate in, the handoff out — so the acceptance pipeline is a
first-class checkpoint of the engineer pipeline rather than a separate detour.
**Requires the `atdd` plugin.** If it is not installed, tell the user to run
`/plugin install atdd@disciplined-agentic-engineering` and stop.
## When to use
Checkpoint 3, after `discover-acs` (Checkpoint 2) has produced an approved
`acs.md`. Produces `spec.md` + the feature's `.build/` pipeline.
**Not for:** AC discovery (`discover-acs`); planning (`plan`); using the
acceptance workflow outside a DAE feature folder (invoke `atdd:atdd` directly).
## Workflow
### Step 0 — Entry gate
Verify the prior checkpoint is complete: run
`${CLAUDE_PLUGIN_ROOT}/scripts/dae_handoff.py <feature-dir> --through 2`. On a
…Read the whole file at its exact version.
How to install
mdr add swingerman/engineer/atdd@git:20260710.5dd248amdr add swingerman/engineer/atdd@sha256:656364a6940988ebPin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_4jnaih7naeiluml2)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260710.5dd248a latest | 2026-07-10 | 5dd248a | 4,661 B | A | view · diff |
| git:20260528.0c6f513 | 2026-05-28 | 0c6f513 | 3,676 B | A | view · diff |
| git:20260520.18fc0fe | 2026-05-20 | 18fc0fe | 3,196 B | A | view · diff |
| git:20260519.eeaf71b | 2026-05-19 | eeaf71b | 2,948 B | A | view · diff |
| git:20260518.e2504e8 | 2026-05-18 | e2504e8 | 2,514 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 (4661 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
swingerman/engineer · 150 stars · license MIT · pushed 2026-09-22 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_4jnaih7naeiluml2 GET https://markdownregistry.com/api/v1/resolve?ref=swingerman/engineer/atdd GET https://markdownregistry.com/api/v1/blob/656364a6940988ebaca14f40f930ee7730ba417b9c38f7aad4a42f2959cedc24
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