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wassden

by tokusumi
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Python
MIT License
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wassden

CI Python License: MIT MCP

Spec-Driven Development MCP server that transforms any LLM into a systematic development agent

🚀 Generate requirements → design → tasks → code with 100% traceability and validation

⚡ Quick Start (MCP)

# Add to Claude Code claude mcp add wassden -- uvx --from git+https://github.com/tokusumi/wassden-mcp wassden start-mcp-server --transport stdio # Test it uvx --from git+https://github.com/tokusumi/wassden-mcp wassden prompt-requirements --userInput "Create a TODO app"

🎯 What It Does

  • ✅ Requirements → Design → Tasks → Code - Complete SDD workflow with structured prompts

  • 🔒 100% READ-ONLY - No file modification risk, only analysis and prompt generation

  • 🌍 Auto Language Detection - Seamless Japanese/English support

  • ⚡ Ultra-fast Performance - <0.01ms response time with 405+ tests passing

  • 📊 100% Traceability - Complete REQ↔DESIGN↔TASK mapping enforcement

📦 Installation

Prerequisites

  • uv package manager (pip install uv)

  • MCP-compatible client (Claude Code, Cursor, GitHub Copilot, etc.)

Claude Code

claude mcp add wassden -- uvx --from git+https://github.com/tokusumi/wassden-mcp wassden start-mcp-server --transport stdio

Cursor, GitHub Copilot, Other MCP Clients

Edit your MCP settings file:

{ "mcpServers": { "wassden": { "command": "uvx", "args": [ "--from", "git+https://github.com/tokusumi/wassden-mcp", "wassden", "start-mcp-server", "--transport", "stdio" ] } } }

📚 For detailed setup and development installation, see docs/development.md

🚀 Basic Usage

1. Analyze & Generate Requirements

# Analyze project description and generate requirements prompt uvx --from git+https://github.com/tokusumi/wassden-mcp wassden prompt-requirements \ --userInput "Create a task management API with authentication"

2. Validate Generated Specs

# Validate specifications with auto language detection uvx --from git+https://github.com/tokusumi/wassden-mcp wassden validate-requirements specs/my-feature/requirements.md uvx --from git+https://github.com/tokusumi/wassden-mcp wassden validate-design specs/my-feature/design.md uvx --from git+https://github.com/tokusumi/wassden-mcp wassden validate-tasks specs/my-feature/tasks.md

3. Get Traceability Matrix

# Generate complete dependency mapping uvx --from git+https://github.com/tokusumi/wassden-mcp wassden get-traceability

🛠️ Core Tools

Requirements Generation

  • prompt-requirements - Analyzes input for completeness and generates EARS requirements prompt

    • Default: Checks completeness, asks questions if incomplete, generates prompt if complete

    • --force: Skip completeness verification and generate requirements prompt

Design & Planning

  • prompt-design - Generates architectural design prompt from requirements

  • prompt-tasks - Creates WBS task breakdown prompt from design

Validation Suite

  • validate-requirements - Ensures EARS format and completeness

  • validate-design - Checks architectural consistency

  • validate-tasks - Verifies task dependencies and coverage

Traceability & Analysis

  • get-traceability - Complete REQ↔DESIGN↔TASK dependency mapping

  • analyze-changes - Impact analysis for specification changes

  • generate-review-prompt - Task-specific implementation review

📚 See full tool documentation for detailed usage and examples

📊 Performance

  • Response Time: <0.01ms average (ultra-fast analysis)

  • Test Coverage: 405+ tests with 100% passing

  • Memory Efficient: <50MB growth per 1000 operations

  • Concurrent Support: Handles 20+ parallel tool calls efficiently

🧪 Run benchmarks: python benchmarks/run_all.py

🧪 Development Mode Features (Experimental)

⚠️ NOTE: Experimental features for internal validation and benchmarking. Requires dev installation.

The experiment framework provides validation and benchmarking capabilities for the wassden toolkit itself. These features are only available in development mode:

# Install with dev dependencies git clone https://github.com/tokusumi/wassden-mcp cd wassden-mcp uv sync # Installs all dependencies including dev extras # Run experiments (dev mode only) uv run wassden experiment run ears # EARS pattern validation uv run wassden experiment run performance # Performance benchmarking uv run wassden experiment run language # Language detection testing

Key Capabilities

  • Statistical Analysis: Mean, variance, confidence intervals (REQ-04)

  • Experiment Management: Save/load/compare configurations (REQ-05, REQ-06)

  • Comparative Analysis: Statistical significance testing (REQ-07)

  • Resource Constraints: 10-minute timeout, 100MB memory limit (NFR-01, NFR-02)

📚 See Experiment Framework Documentation for detailed usage

🎯 Use Cases

  • Development Teams: Systematic requirements gathering and project planning

  • AI Agents: Structured prompts for complex development workflows

  • Technical Writers: Automated documentation validation and traceability

  • Quality Assurance: Built-in validation with actionable feedback

📚 Documentation

🤝 Contributing

Contributions are welcome! See docs/development.md for development setup.

make check # Run all quality checks before committing

📄 License

MIT License - see LICENSE file for details.

Built with ❤️ for the AI-driven development community

This server cannot be installed

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security - not tested
A
license - permissive license
-
quality - not tested

How are these scores calculated?

A Spec-Driven Development toolkit that transforms LLMs into development agents by providing expert-crafted prompts for generating structured specifications and validating documents across the Requirements → Design → Tasks → Code workflow.

  1. ⚡ Quick Start (MCP)
    1. 🎯 What It Does
      1. 📦 Installation
        1. Prerequisites
        2. Claude Code
        3. Cursor, GitHub Copilot, Other MCP Clients
      2. 🚀 Basic Usage
        1. 1. Analyze & Generate Requirements
        2. 2. Validate Generated Specs
        3. 3. Get Traceability Matrix
      3. 🛠️ Core Tools
        1. Requirements Generation
        2. Design & Planning
        3. Validation Suite
        4. Traceability & Analysis
      4. 📊 Performance
        1. 🧪 Development Mode Features (Experimental)
          1. Key Capabilities
        2. 🎯 Use Cases
          1. 📚 Documentation
            1. 🤝 Contributing
              1. 📄 License

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