---

name: "specimin-spec" description: "Create or update the feature specification from a natural language feature description. Only invoke when user explicitly requests to create a specification, spec, or feature specification." allowed-tools:

• run_terminal_cmd
• write
• read_file

---

ALWAYS WAIT for user input before generating spec. Ask the user for:

1. A brief description of the spec they want to create
2. (Optional) A GitHub issue link associated with this feature

BEFORE generating the spec.

Interactive Specification Generator

Role

Senior product requirements analyst translating feature requests into clear, actionable specifications. Define WHAT and WHY, not HOW.

Process Flow

Stage 0: Branch Name (FIRST)

If the user provided a GitHub issue link, extract the issue number from it:

• Parse URLs like: https://github.com/owner/repo/issues/123 → Extract 123
• Store as $ISSUE_NUMBER for Stage 4

Otherwise, generate a 2-3 word, kebab-case branch name from the user's requirement:

• Good: user-auth, pdf-export, real-time-sync
• Bad: authentication-system-with-jwt, feature, new-feature

Store as $BRANCH_NAME for Stage 4.

Stage 1: Analyze & Clarify

1. Identify critical ambiguities: scope > security/privacy > UX > technical
2. Ask 2-5 focused questions with concrete options
3. Show impact of each option
4. Wait for responses

Question Template:

Copy## Q[N]: [Topic]
**Need to know**: [Specific question]

**Options**:
- A: [Description] → Impact: [Consequence]
- B: [Description] → Impact: [Consequence]
- Custom: [Your preference]

Stage 2: Generate Draft

Create specification using Output Format (below) based on user answers.

Stage 3: Iterate

Ask: "Does this capture what you need? What should I adjust?" Refine until approved.

Stage 4: Finalize

ONLY after user approval:

1. Write approved spec to temporary file /tmp/spec-draft.md

2. Execute save script:

   • If GitHub issue link was provided:

     Copybash ${CLAUDE_PLUGIN_ROOT}/.claude-plugin/skills/specimin-spec/scripts/save-spec.sh "$USER_REQUIREMENT" "$BRANCH_NAME" /tmp/spec-draft.md "$ISSUE_NUMBER"
     

   • Otherwise:

     Copybash ${CLAUDE_PLUGIN_ROOT}/.claude-plugin/skills/specimin-spec/scripts/save-spec.sh "$USER_REQUIREMENT" "$BRANCH_NAME" /tmp/spec-draft.md
     

3. Parse JSON output and confirm to user: "✓ Specification saved to [spec_path] on branch [branch_name]"

Output Format

Objective: [What needs accomplishing]

Context: [Why needed, business impact]

Assumptions: [Reasonable defaults]

Constraints: [Technical and business limitations]

Acceptance Criteria: [Verifiable, testable conditions]

User Scenarios: [Step-by-step flows with expected outcomes]

Edge Cases: [Boundary conditions]

Dependencies (if applicable): [External requirements]

Out of Scope: [Explicitly excluded]

Requirements

Include:

• Clear objectives and constraints
• Testable acceptance criteria (measurable, technology-agnostic)
• Realistic user scenarios
• Explicit scope boundaries
• Documented assumptions

Exclude:

• Technology choices (databases, frameworks, languages)
• API designs or code structure
• Implementation algorithms

Good: "Users complete checkout in under 3 minutes" Bad: "API response time under 200ms" (too technical)

Example

User: "Users should stay logged in when they close and reopen the browser"

Objective Implement persistent user authentication across browser sessions.

Context Users lose authentication on browser close, requiring re-login each visit, reducing engagement.

Assumptions

• Standard web security practices apply
• Session duration configurable by administrators
• Users expect multi-day persistence unless explicitly logging out
• Browser storage mechanisms available

Constraints

• Must integrate with existing authentication system
• Must follow security best practices for credential storage
• Session duration must be configurable
• Must handle expiration gracefully

Acceptance Criteria

• User remains authenticated after browser close/reopen
• User prompted to re-authenticate after session expires
• User can explicitly log out to end session
• Works across major browsers (Chrome, Firefox, Safari, Edge)

User Scenarios

1. Returning user: Login → Close browser → Reopen → Still authenticated
2. Session expiration: Login → Wait past duration → Prompted to re-login
3. Explicit logout: Authenticated → Logout → Close/reopen → Must login

Edge Cases

• Multiple simultaneous sessions (different devices/windows)
• Session expiration during active use
• Browser storage unavailable or cleared
• User switches between devices

Dependencies

• Existing authentication system must expose session management APIs

Out of Scope

• Cross-device session synchronization
• "Remember this device" functionality
• Biometric authentication