# Project Overview - Product Development Requirements (PDR)
**Document Version:** 1.2
**Last Updated:** 2025-11-30
**Project:** ClaudeKit Blender MCP
**Current Phase:** Phase 02 Completed
**Next Phase:** Phase 03 Planning
## Executive Summary
ClaudeKit Blender MCP is a standalone Model Context Protocol (MCP) server that creates a seamless bridge between Claude AI and Blender 3D software. The project enables AI-driven 3D content creation, manipulation, and rendering through standardized MCP protocols with robust socket-based communication.
## Product Vision
**Mission**: To democratize 3D content creation by enabling natural language interaction with Blender through AI assistance.
**Vision**: Create the industry-standard AI-3D workflow integration that empowers creators, developers, and designers to bring their ideas to life through conversational 3D modeling.
## Core Value Propositions
1. **Natural Language 3D Creation**: Transform complex 3D operations into simple conversational commands
2. **Real-time Collaboration**: Enable live AI assistance during 3D modeling workflows
3. **Standardized Integration**: Leverage MCP protocol for consistent, reliable communication
4. **Professional-grade Quality**: Maintain Blender's full feature set and rendering capabilities
5. **Extensible Architecture**: Support custom tools and workflow automation
## Target User Personas
### Primary Users
1. **3D Artists & Designers**
- Need: Faster iteration and prototyping
- Pain Point: Technical complexity of traditional 3D workflows
- Benefit: AI-assisted creative exploration
2. **Game Developers**
- Need: Rapid asset generation and modification
- Pain Point: Time-consuming asset creation pipelines
- Benefit: Automated asset optimization and variation creation
3. **Architectural Visualizers**
- Need: Quick scene modifications and client iterations
- Pain Point: Manual rework of architectural models
- Benefit: Conversational scene editing and rendering
### Secondary Users
1. **Educators & Students**
- Need: Accessible 3D learning tools
- Pain Point: Steep learning curve for 3D software
- Benefit: Guided AI-assisted learning
2. **Technical Artists**
- Need: Workflow automation and scripting
- Pain Point: Repetitive technical tasks
- Benefit: AI-powered automation and optimization
## Functional Requirements
### Core Features (Phase 02 - Completed)
#### Socket Communication Layer ✅
- **TCP Socket Client**: Reliable localhost:9876 communication
- **JSON-RPC Protocol**: Standardized request/response messaging
- **Timeout Management**: 180-second operation timeouts
- **Chunked Responses**: Handling of partial JSON data
- **Error Handling**: Comprehensive error recovery and reporting
#### Validation Framework ✅
- **Zod Schemas**: Type-safe validation for all data structures
- **3D Object Validation**: Mesh, material, and property validation
- **Vector Math Validation**: Coordinate and transformation validation
- **Color Validation**: Material and lighting color validation
- **Screenshot Validation**: Image data and metadata validation
#### Response Formatting ✅
- **Markdown Output**: Structured, readable responses
- **JSON Serialization**: Clean data exchange format
- **Character Limits**: Configurable output truncation
- **Error Formatting**: Consistent error message structure
#### Blender Integration ✅
- **Addon Server**: Full-featured Blender addon (77.7% of codebase)
- **3D Manipulation**: Object creation, modification, deletion
- **Scene Management**: Layer, camera, and lighting control
- **Rendering**: Screenshot and render output handling
### Technical Requirements
#### Performance Requirements
- **Response Time**: <5s for simple operations, <30s for complex renders
- **Throughput**: Handle 10+ concurrent operations
- **Memory**: Efficient chunked response processing
- **Scalability**: Support for scenes with 1000+ objects
#### Security Requirements
- **Input Validation**: Comprehensive schema validation
- **Timeout Protection**: Prevent hanging operations
- **Error Sanitization**: Secure error message handling
- **Local-Only Communication**: Restrict to localhost connections
#### Reliability Requirements
- **Connection Stability**: Persistent socket connections
- **Error Recovery**: Automatic reconnection handling
- **Data Integrity**: Validation of all data transfers
- **Graceful Degradation**: Fallback handling for failures
## Non-Functional Requirements
### Quality Attributes
1. **Maintainability**
- Modular architecture with clear separation of concerns
- Comprehensive inline documentation
- Type safety with TypeScript and Zod
- Code coverage >85%
2. **Extensibility**
- Plugin architecture for custom tools
- Configurable validation schemas
- Modular response formatters
- Protocol versioning support
3. **Usability**
- Intuitive natural language interface
- Clear error messages and guidance
- Consistent response formatting
- Comprehensive documentation
4. **Performance**
- Low-latency socket communication
- Efficient memory usage
- Optimized for real-time interaction
- Minimal CPU overhead
### Constraints and Assumptions
#### Technical Constraints
- Blender version >= 3.0.0 required
- Node.js >= 16.0.0 required
- TCP port 9876 must be available
- Localhost-only operation for security
#### Business Constraints
- Open-source licensing compliance
- No external API dependencies
- Community-driven development model
- Regular security audits required
#### Assumptions
- Users have basic Blender knowledge
- Stable internet connection for Claude access
- Adequate system resources for 3D operations
- Willingness to learn new workflows
## Acceptance Criteria
### Phase 02 Completion Criteria ✅
1. **Socket Communication**
- [x] TCP client establishes connection to localhost:9876
- [x] JSON-RPC messages sent and received successfully
- [x] 180-second timeout implemented and functional
- [x] Chunked response processing handles partial data
- [x] Error scenarios properly handled and reported
2. **Data Validation**
- [x] All Zod schemas implemented and tested
- [x] 3D object validation working correctly
- [x] Vector and color validation functional
- [x] Invalid data properly rejected with errors
- [x] Type safety maintained throughout system
3. **Response Processing**
- [x] Markdown formatter produces clean output
- [x] JSON formatter handles complex data structures
- [x] Character limits enforced when needed
- [x] Error formatting consistent and informative
- [x] Response times within acceptable limits
4. **Code Quality**
- [x] Code review completed (Grade: B+, 85/100)
- [x] Security improvements implemented
- [x] Documentation updated and comprehensive
- [x] Build process successful
- [x] No critical bugs or issues
5. **Integration Testing**
- [x] End-to-end socket communication tested
- [x] Blender addon integration verified
- [x] MCP protocol compliance confirmed
- [x] Error scenarios tested and handled
- [x] Performance benchmarks met
## Success Metrics
### Technical Metrics
- **Code Quality**: ≥85% code review score
- **Test Coverage**: ≥90% line coverage
- **Performance**: <5s response time for basic operations
- **Reliability**: 99.9% uptime for socket connections
- **Security**: Zero critical vulnerabilities
### User Metrics
- **Adoption Rate**: 100+ active users within 3 months
- **User Satisfaction**: ≥4.5/5 rating
- **Task Completion**: ≥80% success rate for common operations
- **Learning Curve**: <2 hours to basic proficiency
- **Community Engagement**: ≥50 contributors within 6 months
### Business Metrics
- **Development Velocity**: 2-week sprint cycles
- **Feature Delivery**: 90% on-time completion
- **Quality Standards**: Zero critical bugs in production
- **Documentation**: 100% API coverage
- **Community Growth**: 25% month-over-month user increase
## Risk Assessment
### Technical Risks
1. **High Risk**: Blender API compatibility changes
- **Mitigation**: Version testing and compatibility layers
- **Impact**: High
- **Probability**: Medium
2. **Medium Risk**: Socket connection instability
- **Mitigation**: Robust error handling and reconnection logic
- **Impact**: Medium
- **Probability**: Low
3. **Low Risk**: Performance bottlenecks
- **Mitigation**: Profiling and optimization
- **Impact**: Medium
- **Probability**: Low
### Business Risks
1. **Medium Risk**: Competition from similar tools
- **Mitigation**: Unique value proposition and community building
- **Impact**: High
- **Probability**: Medium
2. **Low Risk**: Changing Blender licensing
- **Mitigation**: Open-source compliance monitoring
- **Impact**: Medium
- **Probability**: Low
## Implementation Roadmap
### Phase 03: Advanced Features (Planned)
- Custom tool creation framework
- Batch operation support
- Advanced material manipulation
- Animation timeline control
### Phase 04: Integration & Ecosystem (Future)
- Cloud rendering support
- Asset library integration
- Multi-user collaboration
- Plugin marketplace
### Phase 05: Enterprise Features (Future)
- Team workspaces
- Advanced security features
- Performance analytics
- Custom workflow automation
## Quality Assurance Plan
### Testing Strategy
- **Unit Tests**: 100% function coverage
- **Integration Tests**: All socket communications
- **End-to-End Tests**: Complete user workflows
- **Performance Tests**: Load and stress testing
- **Security Tests**: Vulnerability scanning and penetration testing
### Review Process
- **Code Reviews**: Mandatory for all changes
- **Architecture Reviews**: Major feature implementations
- **Security Reviews**: Quarterly security audits
- **Documentation Reviews**: With every release
- **User Acceptance Testing**: Community feedback integration
## Governance Model
### Development Process
- **Agile Methodology**: 2-week sprint cycles
- **Feature Branches**: Isolated development workflow
- **Pull Requests**: Code review and discussion
- **Continuous Integration**: Automated testing and building
- **Release Management**: Semantic versioning and changelogs
### Community Guidelines
- **Code of Conduct**: Inclusive and respectful environment
- **Contributing Guidelines**: Clear contribution process
- **Documentation Standards**: Comprehensive and up-to-date
- **Issue Templates**: Structured bug reports and feature requests
- **Release Communication**: Transparent roadmap and updates
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**Document Status**: Approved and Current
**Next Review**: 2025-12-30
**Owner**: ClaudeKit Development Team
**Approvers**: Project Maintainers
