# Spec Creation

Feature specification creation from codebase research.

- Repository: https://github.com/a5c-ai/babysitter (1887 stars)
- Category: Writing
- License: MIT
- Last updated: 2026-11-01
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add a5c-ai/babysitter --skill spec-creation -g -a claude-code -y`
Codex: `npx skills add a5c-ai/babysitter --skill spec-creation -g -a codex -y`
Cursor: `npx skills add a5c-ai/babysitter --skill spec-creation -g -a cursor -y`
Gemini CLI: `npx skills add a5c-ai/babysitter --skill spec-creation -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add a5c-ai/babysitter`

## Description

Feature specification creation from codebase research. Produces requirements, acceptance criteria, architecture decisions, implementation plans, and risk analysis.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

- Identify existing patterns and conventions
- Map dependencies and integration points
- Review existing tests for testing patterns
- Document technical constraints

## Specification Components

### Scope and Non-Goals
Clear boundaries on what the feature does and does not include.

### Functional Requirements
Detailed requirements with unique identifiers for tracking.

### Acceptance Criteria
Testable, measurable criteria for each requirement.

### Architecture Decisions
Decision records with rationale and alternatives considered.

### Implementation Plan
Phased approach ordered by dependency, not priority.

### Risk Analysis
Identified risks with probability, impact, and mitigation strategies.

### API Contracts and Data Models
Interface definitions and data model schemas.

### Test Strategy
Mapping of unit, integration, and E2E tests to requirements.

## Output

Specifications are saved to `docs/specs/{feature}.md` for reference by the execution workflow.

## When to Use

- `/spec:create [feature]` slash command
- Before starting a new feature implementation
- When planning complex multi-module changes

## Processes Used By

- `claudekit-spec-workflow` (create mode)