spec
Turn a vague feature or product idea into an agreed, persisted specification through relentless structured questioning. Never assumes — every gap, ambiguity, or "probably" becomes a question to the developer, and the spec cannot be approved while open questions remain. Produces docs/specs/<NNN>-<slu
By codewithmukesh · 1,148 installs
npx skills add codewithmukesh/dotnet-claude-kit --skill spec
Source repository · Upstream listing
/spec — Relentless Specification Workflow
What
Converts an idea into a written, versioned specification that both the developer
and Claude explicitly agree on — before any planning or code. The contract:
Never assume. Every gap in the idea becomes a question. If Claude catches
itself thinking "probably", "presumably", or "the usual way" — that thought is
a question to ask, not a decision to make.
Relentless, but structured. Questions come in focused rounds (3–5 at a
time) across nine dimensions — not one overwhelming dump, and not a single
polite round that stops early.
Agreement is explicit. Specs have a status lifecycle: Draft → In Review →
Approved. Implementation never starts from a Draft. Approval requires the
developer to read the final document and say so.
Specs are files, not chat. Output persists to docs/specs/<NNN <slug .md
and survives the session. Plans, tests, and commits reference it.
When
Any feature too big to describe completely in one sentence
New product or module ideas ("I want to add team workspaces")
Before /plan for non trivial features — plan consumes the approved spec
When requirements feel fuzzy mid implementation: stop, /spec , re plan
Trigger phrases: "spec", "requirements", "PRD", "define the feature", "acceptance criteria"
Skip for: bug fixes, refactors, single endpoint CRUD where the entity is obvious.
How
Step 1: Capture and Restate
Take the raw idea and restate it in one paragraph: what Claude understood, in its
own words. End with: "Is this the idea? What did I get wrong?" Do not begin
questioning until the developer confirms the restatement — questioning the wrong
idea wastes everyone's time.
Step 2: Questioning Rounds
Work through the nine dimensions in order. Each round: pick the 3–5 most
load bearing unanswered questions (answers that reshape later questions come
first). Where the harness supports selectable options, present choices with
trade offs — and a recommendation — but the developer chooses; a recommendation
is never silently applied .
Dimension What to pin down
1 Problem & users Who hurts today, how they work around it, what success looks like
2 Scope What is IN this iteration, what is explicitly OUT, where the MVP line sits
3 Domain & data Entities, relationships, lifecycle (create→archive→delete?), retention
4 API contract Resources, endpoints, request/response shapes, pagination, versioning
5 Authorization Who can do what, role/claim model, tenant boundaries
6 Edge cases & failure modes Concurrency, duplicates, idempotency, partial failure, limits
7 Non functionals Expected volume, latency budget, growth assumptions
8 Integrations External services, published events, webhooks, side effects
9 Acceptance criteria Testable Given/When/Then for every behavior in scope
Rules of relentless questioning:
Record every answer in the draft spec immediately — answers are requirements, not conversation.
Challenge contradictions on the spot: "In round 1 you said X; this answer implies not X. Which wins?"
"I don't know" is a legal answer → moves to Deferred Decisions with an explicit
fallback the developer chooses now ("default to soft delete until decided").
Silent deferral is forbidden.
A dimension is done when a follow up round generates zero new questions for it.
The questioning phase is done when ALL nine dimensions are done. Do not stop
because the conversation feels long — stopping early is how assumptions sneak in.
Step 3: Draft the Spec File
Determine the next number from existing files in docs/specs/ (create the
directory if missing). Write docs/specs/<NNN <slug .md :
Step 4: Review Loop
Set status to In Review . Present the complete spec and ask: "Read this
end to end. What is wrong, missing, or over engineered?" Fold corrections in and
re present. Repeat until the developer has no further changes. New answers may
spawn new questions — that is the process working, not a failure to converge.
Step 5: The Agreement Gate
Approval is a deliberate act, never inferred from silence or "looks good" in
passing. Ask explicitly: "Do you approve this spec? After approval, code follows
the spec — changes go through the spec first." On approval, set
Status: Approved (<date ) .
Open Questions must be empty. If any remain, the spec cannot be approved — resolve or defer each one explicitly.
If implementation later reveals a wrong assumption: stop, set status back to
In Review, fix the spec with the developer, then resume. Code never silently
diverges from an approved spec.
Step 6: Handoff
/plan reads the approved spec and maps acceptance criteria to implementation steps
/tdd turns acceptance criteria into the first failing tests (AC n → test name)
Commits for the feature reference the spec: feat: team workspaces (spec 004)
Example
Related
/plan — Consumes the approved spec; never plan a spec worthy feature without one
/tdd — Acceptance criteria become the first failing tests
/scaffold — Generates the slices the plan calls for
architecture advisor — Load during Step 2 if the feature forces architectural decisions