sdd-derive SKILL.md skillA
sdd-derive from ahgraber/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ahgraber/skills/sdd-derive@git:20260910.5fa2be4Pins git:20260910.5fa2be4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ahgraber/skills
- Path
skills/sdd-derive/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260910.5fa2be4, committed Sep 10, 2026
- First version recorded
- Jun 17, 2026
- Size
- 18,278 bytes
- Repository stars
- 6
- License
- CC0-1.0
Use when deriving SDD specs from existing code or retroactively documenting implemented behavior. Triggers: "derive specs", "generate specs from code", "document this code in SDD", "retrofit specs", "spec out what's already built".
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
# SDD Derive
Orchestrate spec generation from existing code: a change directory (new or modified behavior) or baseline specs (retroactive documentation).
The orchestrator holds context across phases; subagents are dispatched for scoped work that benefits from context isolation.
> `SPECS_ROOT` is resolved by the `sdd` router before this skill runs.
> Replace `.specs/` with the project's actual specs root.
## Writing Style
Write the derived specs in the voice of a professional technical writer.
Prefer ASD-STE100 Simplified Technical English: short sentences, one instruction per sentence, active voice, and one term per concept.
Keep identifiers, commands, paths, and RFC 2119 keywords exact.
## When to Use
- Deriving specs from existing code ("derive SDD specs for the auth flow")
- Documenting implemented behavior retroactively into baseline specs
- Producing a change directory for behavior already implemented
- User phrases: "derive specs", "generate specs from code", "retrofit specs", "document this code in SDD"
## When Not to Use
- Translating specs from another tool or format — use `sdd-translate`
…Read the whole file at its exact version.
How to install
mdr add ahgraber/skills/sdd-derive@sha256:bd9a92a960d2a442The line at the top of this page pins the label git:20260910.5fa2be4, 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_yubkkhaeuz7andyj)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jun 17, 2026 and Sep 10, 2026, about one every 21 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260910.5fa2be4 latest | 2026-09-10 | 5fa2be4 | 18,278 B | A | view · diff |
| git:20260819.209d97b | 2026-08-19 | 209d97b | 18,182 B | A | view · diff |
| git:20260807.1a09fb8 | 2026-08-07 | 1a09fb8 | 17,978 B | A | view · diff |
| git:20260712.b980670 | 2026-07-12 | b980670 | 17,687 B | A | view · diff |
| git:20260617.5b2fd9a | 2026-06-17 | 5b2fd9a | 17,534 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 (18278 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
ahgraber/skills · 6 stars · license CC0-1.0 · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_yubkkhaeuz7andyj GET https://markdownregistry.com/api/v1/resolve?ref=ahgraber/skills/sdd-derive GET https://markdownregistry.com/api/v1/blob/bd9a92a960d2a442baf00ecdb82c0df970307caa91e552ab1024631891288c5e
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.