tessl-labs/spec-kit

tessl install tessl-labs/spec-kit@0.6.4

Specification-driven development workflow skills for AI coding assistants

Spec-Kit Skills

A complete 10-phase specification-driven development workflow for AI coding assistants.

Overview

Spec-Kit provides skills that guide AI assistants through a structured development process, from defining project governance to implementing features and exporting tasks to GitHub Issues.

Workflow Phases

Phase	Skill	Purpose
0	`/speckit-00-constitution`	Define project governance principles
1	`/speckit-01-specify`	Create feature specification from natural language
2	`/speckit-02-clarify`	Resolve ambiguities (max 5 questions)
3	`/speckit-03-plan`	Create technical implementation plan
4	`/speckit-04-checklist`	Generate quality checklists for requirements
5	`/speckit-05-testify`	Generate test specifications (TDD support)
6	`/speckit-06-tasks`	Generate task breakdown
7	`/speckit-07-analyze`	Validate cross-artifact consistency
8	`/speckit-08-implement`	Execute implementation
9	`/speckit-09-taskstoissues`	Export tasks to GitHub Issues

Key Features

Phase Separation: Strict boundaries between governance, requirements, and implementation
Constitution Enforcement: All skills validate against project principles
TDD Support: Generate test specs before implementation with tamper detection
Checklist Gating: "Unit tests for English" validate requirements quality
Self-Validating: Each skill checks its own prerequisites
Cross-Platform: Bash and PowerShell support

Quick Start

Create a constitution (optional but recommended):

/speckit-00-constitution

Specify a feature:

/speckit-01-specify Add user authentication with OAuth2 support

Follow the workflow through plan, tasks, and implementation.

Artifacts Created

specs/NNN-feature-name/
├── spec.md           # Feature specification
├── plan.md           # Technical implementation plan
├── tasks.md          # Task breakdown
├── research.md       # Research findings
├── data-model.md     # Entity definitions
├── quickstart.md     # Integration scenarios
├── contracts/        # API specifications
├── checklists/       # Quality checklists
└── tests/
    └── test-specs.md # TDD test specifications

Installation

tessl install tessl-labs/spec-kit