spec-manager
MANDATORY specification writing skill. ONLY way to create/update specs.Auto-invoke when:- Creating s
by hiroshi75|Open Source
spec-manager
PROACTIVE SKILL - Automatically manage and update application specification documents. Claude invokes this skill automatically when code changes occur or specifications need updating, keeping your documentation synchronized with your codebase.
Installation
/plugin marketplace add hiroshi75/ccplugins
/plugin install spec-manager-plugin@hiroshi75
Automatic Triggers
Claude automatically invokes this skill when:
- Starting features - Before implementing new functionality
- Completing changes - After modifying 3+ files or major features
- Refactoring - When architecture or project structure changes
- Keywords detected - When user mentions: 仕様, spec, design, architecture, requirements, PRD
- Session end - After development sessions with substantial changes
No manual action required - Claude keeps specifications synchronized automatically.
Workflow
Detect changes → Auto-invoke skill → Update .spec-manager/ docs → Notify user
Manual Invocation (Optional)
To manually trigger specification updates:
/spec-manager-plugin:update-spec
With language preference:
/spec-manager-plugin:update-spec 日本語で
Specification Documents
The following documents are maintained in .spec-manager/:
| Document | Required | Description |
|---|---|---|
| PRD.md | Yes | Product Requirements Document |
| AppFlow.md | Yes | Application flow and screen transitions |
| TechStack.md | Yes | Technologies and dependencies used |
| FileStructure.md | No | Project directory structure |
| FrontendGuidelines.md | No | Frontend design principles |
| BackendStructure.md | No | Backend architecture and DB/Storage |
| DevInstructions.md | No | Development conventions and rules |
How It Works
- Change Detection - Claude monitors development activities
- Trigger Evaluation - Checks if auto-invoke conditions are met
- Skill Invocation - Automatically invokes spec-manager skill
- Document Update - Updates relevant specification documents
- User Notification - Reports what was updated with summary
Example Notification
After automatic invocation, you'll see:
Specification documents have been automatically updated:
- PRD.md: Added authentication feature requirements
- TechStack.md: Updated with JWT library dependencies
- FileStructure.md: Reflected new auth/ directory structure