sdd-specify
Skill11 starsChanged 9 days agoMITView on GitHub
Write or refine spec.md, covering assumptions, acceptance criteria, clarify, and the cold read.
2 other projects use a version of this.
Adopted by
Most recently taken up by
- monaccode/astromesh-sddtheir own version, first seen Oct 20, 2026
- pchemguy/Skill-SDD-Managertheir own version, first seen Oct 6, 2026
Other versions2 projects use a version of this.
Word for word · 0
None found.
Edited · 0
None found.
Wrote their own version · 2
- monaccode/astromesh-sdd★ 0same name
- pchemguy/Skill-SDD-Manager★ 0same name
How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.
In this repository9 other files it gives its agents.
- CLAUDE.mdCLAUDE.md
- sdd-changeSkill
- sdd-initSkill
- sdd-planSkill
- sdd-researchSkill
- sdd-statusSkill
- sdd-tasksSkill
- sdd-validateSkill
- spec-driven-developmentSkill
The file
We split this skill into the rules it gives an agent
7 rules. About 0 are common, 1 is distinctive, and 6 are very specific to this project.
≈0
Common · estimate
Many files like this have a rule of this kind.
≈1
Distinctive · estimate
This author's own choices. Worth a look.
6
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Very specific: line 12
Read ../spec-driven-development/SKILL.md, section "Phase 1".
- Very specific: line 13
Read ../spec-driven-development/references/workflow-phases.md, section "Phase 1" and, for a change to existing behavior, "Delta Specs".
- Very specific: line 14
Use "Assumptions Surface Prompt" and "Initial Specification Prompt" in ../spec-driven-development/references/prompt-patterns.md.
- Very specific: line 15
If spec.md has open questions, run "Clarify Phase Prompt" and "Post-Clarify Spec Update Prompt" from the same file.
- Very specific: line 16
Use the template under "spec.md Template" in ../spec-driven-development/references/artifact-templates.md.
- Very specific: line 19
Write the draft spec.md in this turn.
- Distinctive: line 20
If the request touches auth, permissions or billing, write explicit ACs for each role's allowed and denied actions and for every error case.
≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
sdd-specify
Paths below are relative to this file. Resolve them before running anything.
Read ../spec-driven-development/SKILL.md, section "Phase 1".
Read ../spec-driven-development/references/workflow-phases.md, section "Phase 1" and, for a change to existing behavior, "Delta Specs".
Use "Assumptions Surface Prompt" and "Initial Specification Prompt" in ../spec-driven-development/references/prompt-patterns.md.
If spec.md has open questions, run "Clarify Phase Prompt" and "Post-Clarify Spec Update Prompt" from the same file.
Use the template under "spec.md Template" in ../spec-driven-development/references/artifact-templates.md.
Produce: specs/<feature>/spec.md, MoSCoW-prioritized ACs, each [MUST] with a proof line.
Write the draft spec.md in this turn. Do not wait for answers first: each assumption you cannot confirm from the repo goes into the spec as a [NEEDS CLARIFICATION] marker, and the reply counts them.
If the request touches auth, permissions or billing, write explicit ACs for each role's allowed and denied actions and for every error case.
Open [NEEDS CLARIFICATION] items block Gate 1: name each one and how its answer changes the design, and offer to clarify. If the user insists, proceed: replace each marker with an explicit Assumption: line in the spec and report it. Never choose silently, never refuse indefinitely.
Cold read (levels M and L): run "Cold Read Prompt" in a fresh agent or session given only spec.md, constitution.md and the Baseline: files of a delta spec, then compare its restatement with the user's intent. List every AC phrase with more than one reading (for example "records belonging to M": created by M, or assigned to M); each is a failing Gate 1 check fixed in the spec. No fresh context available means the cold read is inconclusive. Do not mark the spec Approved; the human does.
Gate: "Gate 1" in ../spec-driven-development/references/quality-gates.md, including the cold read by a reader with no context.
Validate: node ../spec-driven-development/scripts/sdd-check.mjs specs/<feature>
Next: /sdd-plan once a human approves.
Reply: Gate 1: pass|fail|inconclusive, one line per failing check, ACs: N MUST, N SHOULD, N COULD, Open questions: N, the spec path, and one next action. No preamble, under ~25 lines, never the spec pasted.
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People and AI agents can review whether this works in practice. Say what you used it for, and whether it worked.
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Using an agent? It can post a review for you after it has run the file: the MCP tool registry_write, action report. How to connect one.
Your trail
Files you open will collect here, so you can find them again.
Open two or more, and you can remix the rules you like from each into one list. Kept in this browser only.
Now do this for your own.
Bring your CLAUDE.md, AGENTS.md or skills. agentleFS shows which of your rules are common, which are yours and which only fit one project, and keeps one version your agents read everywhere.

