Specification Creation | Skills Pool
Specification Creation Create technology-agnostic feature specifications using intelligence-first queries. Use when user describes what they want to build, mentions requirements, discusses user needs, or says "I want to create/build/implement" something. This skill enforces Article IV Specification-First Development.
yangsi7 0 Sterne 11.01.2026 Beruf Kategorien Architekturmuster @.claude/shared-imports/constitution.md
@.claude/shared-imports/CoD_Σ.md
@.claude/templates/feature-spec.md
@.claude/templates/requirements-quality-checklist.md
Specification Creation Skill
Overview
This skill creates technology-agnostic feature specifications following Article IV: Specification-First Development. It captures WHAT and WHY (user needs, requirements, success criteria) WITHOUT HOW (technical implementation, architecture, tech stack).
Core Workflow : Quality Gate → Intelligence Gathering → User Requirements → Specification → Automatic Planning
Automatic Workflow Progression : After creating spec.md, this skill automatically invokes /plan which chains through create-implementation-plan → generate-tasks → /audit → ready for /implement.
Announce at start: "I'm using the specify-feature skill to create a technology-agnostic specification."
Quick Reference
Schnellinstallation
Specification Creation npx skillvault add yangsi7/yangsi7-gmail-digest-claude-skills-specify-feature-skill-md
Sterne 0
Aktualisiert 11.01.2026
Beruf Phase 0 Quality assessment (5 dimensions, 0-10 scale) PROCEED/CLARIFY/BLOCK decision Phase 1 Intelligence queries (auto-number, patterns, architecture) Evidence for spec Phase 2 Extract requirements (problem, stories, functional, success) Technology-agnostic requirements Phase 3 Generate specification (directory, branch, spec.md) spec.md file Phase 4-5 Report + automatic planning (invoke /plan) Workflow to tasks.md + audit
Workflow Files
@.claude/skills/specify-feature/workflows/quality-assessment.md - Phase 0: Quality gate with 5 dimensions
@.claude/skills/specify-feature/workflows/intelligence-gathering.md - Phase 1: Intel-first context
@.claude/skills/specify-feature/workflows/user-requirements.md - Phase 2: WHAT/WHY extraction
@.claude/skills/specify-feature/workflows/spec-generation.md - Phase 3: Create spec.md
@.claude/skills/specify-feature/workflows/automation.md - Phase 4-5: Reporting + automatic /plan
Example & References
@.claude/skills/specify-feature/examples/feature-creation-example.md - Complete walkthrough
@.claude/skills/specify-feature/references/specification-rules.md - Best practices and anti-patterns
Phase 0: Pre-Specification Quality Gate See: @.claude/skills/specify-feature/workflows/quality-assessment.md
Validate user input quality BEFORE creating specification using 5 quality dimensions (0-10 scale):
Problem Clarity - Clear problem statement, pain points, measurable impact
Value Proposition - Business/user value, quantified benefits, success metrics
Requirements Completeness - Key capabilities, scenarios, constraints
Technology-Agnostic - Zero technical details, pure WHAT/WHY focus
User-Centric - User needs central, personas, user value clear
≥ 7.0 : PROCEED to Phase 1
5.0-6.9 : CLARIFY - Request specific improvements
< 5.0 : BLOCK - User description too vague
Why This Matters : Prevents wasting effort on vague or technically prescriptive inputs. Quality gate catches issues before specification creation.
Phase 1: Intelligence-First Context Gathering See: @.claude/skills/specify-feature/workflows/intelligence-gathering.md
Query project intelligence BEFORE creating specification to discover existing patterns:
Step 1.1: Auto-Number Next Feature !`fd --type d --max-depth 1 '^[0-9]{3}-' specs/ 2>/dev/null | sort | tail -1`
Step 1.2: Query Existing Patterns !`project-intel.mjs --search "<user-keywords>" --type md --json > /tmp/spec_intel_patterns.json`
Step 1.3: Understand Project Architecture !`project-intel.mjs --overview --json > /tmp/spec_intel_overview.json`
Token Efficiency : 85% savings vs reading full spec files
Why This Matters : Intelligence evidence ensures specifications build on existing patterns rather than duplicating or conflicting with previous work.
See: @.claude/skills/specify-feature/workflows/user-requirements.md
Extract technology-agnostic requirements focusing on WHAT and WHY, not HOW.
Step 2.1: Problem Statement
What problem are we solving and why?
Who experiences this problem?
Current situation and pain points
Step 2.2: User Stories with Priorities ## User Story <N> - [Title] (Priority: P1/P2/P3)
**As a** [user type]
**I want to** [capability]
**So that** [value/benefit]
**Why P1/P2/P3**: [Rationale for priority]
**Independent Test**: [How to validate this story works standalone]
**Acceptance Scenarios**:
1. **Given** [state], **When** [action], **Then** [outcome]
P1 : Must-have for MVP (core value)
P2 : Important but not blocking
P3 : Nice-to-have (deferred)
Step 2.3: Functional Requirements
Core capabilities (WHAT, not HOW)
Data visibility and user interactions
Constraints and boundaries
Step 2.4: Success Criteria
User-centric metrics (measurable outcomes)
Business metrics
Adoption metrics
Why This Matters : Technology-agnostic requirements survive implementation changes and enable better tech stack decisions in planning phase.
Phase 3: Generate Specification with CoD^Σ Evidence See: @.claude/skills/specify-feature/workflows/spec-generation.md
Create specification document with intelligence evidence.
Step 3.1: Create Feature Directory NEXT_NUM=$(printf "%03d" $(($(fd --type d --max-depth 1 '^[0-9]{3}-' specs/ 2>/dev/null | wc -l) + 1)))
FEATURE_NAME="<derived-from-user-description>"
mkdir -p specs/$NEXT_NUM-$FEATURE_NAME
Step 3.2: Create Git Branch if git rev-parse --git-dir >/dev/null 2>&1; then
git checkout -b "$NEXT_NUM-$FEATURE_NAME"
fi
Step 3.3: Generate Specification Content Use @.claude/templates/feature-spec.md with:
YAML frontmatter (feature, created, status, priority)
Problem statement, user stories, functional requirements, success criteria
CoD^Σ Evidence Trace (intelligence queries, findings, assumptions, clarifications)
Edge cases
Step 3.4: Save Specification Write specs/$NEXT_NUM-$FEATURE_NAME/spec.md
Why This Matters : Evidence trace ensures all specifications have intelligence backing, not just assumptions.
Phase 4-5: Reporting and Automatic Workflow Progression See: @.claude/skills/specify-feature/workflows/automation.md
Report specification completion and automatically trigger implementation planning workflow.
Phase 4: Report to User ✓ Feature specification created: specs/<number>-<name>/spec.md
Intelligence Evidence: [queries + findings]
User Stories: [P1/P2/P3 counts]
Clarifications Needed: [0-3 markers]
**Automatic Next Steps**:
1. If clarifications needed: Use clarify-specification skill
2. Otherwise: **Automatically create implementation plan**
Invoking /plan command now...
Phase 5: Automatic Implementation Planning If [NEEDS CLARIFICATION] markers exist :
User must run clarify-specification skill
After clarifications, re-run specify-feature skill
Automatically invoke /plan command via SlashCommand tool
Workflow progresses: /plan → create-implementation-plan → generate-tasks → /audit
User sees: spec.md → plan.md → research.md → data-model.md → tasks.md → audit report
Why This Matters : Fully automated workflow from specification to implementation-ready state. User only needs to run /feature and /implement.
Anti-Patterns to Avoid See: @.claude/skills/specify-feature/references/specification-rules.md
Include tech stack choices in specification
Design architecture or data models
Specify implementation details ("use React hooks", "create API endpoint")
Create more than 3 [NEEDS CLARIFICATION] markers
Write vague requirements ("system should be fast")
Focus on user value and business requirements
Make requirements testable and measurable
Prioritize user stories (P1, P2, P3)
Document evidence from intelligence queries
Limit unknowns (max 3 [NEEDS CLARIFICATION])
Example Execution See: @.claude/skills/specify-feature/examples/feature-creation-example.md
User Input : "I want to build a user authentication system with social login options"
Quality assessment passed (7.2/10)
Intelligence queries executed
Specification created: specs/004-auth-social-login/spec.md
Automatic planning triggered
Files created: spec.md, plan.md, research.md, data-model.md, tasks.md
Audit passed
Ready for /implement
Prerequisites
✅ Git repository initialized
✅ project-intel.mjs exists and is executable
✅ PROJECT_INDEX.json exists (auto-generated)
⚠️ Optional: product.md exists (for product-aligned features)
Dependencies
None (this skill is the entry point to SDD workflow)
clarify-specification skill : Use after this skill if ambiguities exist
create-implementation-plan skill : Use after this skill (auto-invoked via /plan)
fd (file discovery for feature numbering)
git (branch creation, feature isolation)
project-intel.mjs (pattern discovery)
Next Steps After specification completes, automatic workflow progression :
Automatic Chain (no manual intervention needed):
specify-feature (creates spec.md)
↓ (auto-invokes /plan)
create-implementation-plan (creates plan.md, research.md, data-model.md)
↓ (auto-invokes generate-tasks)
generate-tasks (creates tasks.md)
↓ (auto-invokes /audit)
/audit (validates consistency)
↓ (if PASS)
Ready for /implement
If audit PASS : Run /implement plan.md to begin implementation
If audit FAIL : Fix CRITICAL issues, then re-run (audit re-validates automatically)
If ambiguities found : clarify-specification skill may be invoked during workflow
/plan spec.md - Automatically invoked after spec creation
/implement plan.md - User runs after audit passes
Agent Integration This skill orchestrates agent delegation through the automatic workflow chain.
Implementation Planning Agent When : Automatically after spec.md is created (via /plan invocation)
Agent : implementation-planner
Delegation Method : The /plan slash command invokes the create-implementation-plan skill, which the implementation-planner agent executes.
What the Planner Receives :
spec.md (technology-agnostic specification)
Constitution requirements (Article IV compliance)
Project intelligence context (existing patterns via project-intel.mjs)
What the Planner Returns :
plan.md (implementation plan with tasks and ACs)
research.md (technical research and decisions)
data-model.md (database/state schema)
This skill does NOT directly use the Task tool. Instead:
specify-feature skill
↓ invokes
/plan command (SlashCommand tool)
↓ expands to
create-implementation-plan skill
↓ executed by
implementation-planner agent (isolated context)
Slash commands provide consistent user interface
Skills provide reusable workflows
Agents provide isolated context execution
Separation of concerns: specify-feature focuses on WHAT/WHY, planner handles HOW
Expected Workflow
This skill completes : spec.md created with all requirements
Automatic /plan invocation : SlashCommand tool runs /plan spec.md
Planner agent engaged : Receives spec, constitution, intelligence context
Planning artifacts created : plan.md, research.md, data-model.md generated
Automatic task generation : generate-tasks skill creates tasks.md
Automatic audit : /audit validates consistency
Ready for implementation : User runs /implement plan.md if audit passes
Failure Modes
Common Failures & Solutions 1. Feature auto-numbering fails
Symptom : Cannot determine next feature number
Solution : Create specs/ directory: mkdir -p specs/
Workaround : Manually specify feature number (e.g., 001-feature-name)
2. Intelligence queries return no results
Symptom : No existing patterns found
Solution : This is normal for first features; continue without pattern evidence
Note : Intelligence is opportunistic, not required
3. Specification too technical
Symptom : Spec includes implementation details (React, PostgreSQL, etc.)
Solution : Re-run skill with explicit "WHAT/WHY only, no HOW" instruction
Prevention : Review @constitution.md Article IV (Specification-First)
4. Requirements unclear or incomplete
Symptom : [NEEDS CLARIFICATION] markers in spec
Solution : clarify-specification skill will be invoked automatically
Action : Answer max 5 structured questions to resolve ambiguities
5. Git branch creation fails
Symptom : Cannot create feature branch
Solution : Commit current changes or stash them first
Command : git stash && git checkout -b <feature-branch>
6. Duplicate feature numbers
Symptom : Feature directory already exists
Solution : Intelligence detected wrong next number; manually increment
Prevention : Ensure consistent ###-name branch naming
clarify-specification skill - Invoked when ambiguities detected
create-implementation-plan skill - Automatically invoked via /plan after spec
/feature command - User-facing command that invokes this skill
Position: Entry point to SDD workflow (Phase 1)
Triggers: User describes feature idea, mentions "I want to build", "implement", "create"
Output: spec.md in specs/###-feature-name/ directory
Next: Automatic progression to /plan → /tasks → /audit → ready for /implement
Skill Version : 1.2.0
Last Updated : 2025-10-23
Change Log :
v1.2.0 (2025-10-23): Refactored to progressive disclosure pattern (<500 lines)
v1.1.0 (2025-10-23): Added Phase 0 Pre-Specification Quality Gate
v1.0.0 (2025-10-22): Initial version with cross-skill references
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Overview