squirrel

Squirrel — Full-Cycle Software Development Skill

Overview

Squirrel is a full-cycle AI coding skill that works across 9 AI coding agents. It auto-detects project state (greenfield, in-progress, or mature) and adapts its 8-phase engineering pipeline accordingly. Instead of a one-size-fits-all workflow, it figures out where the project actually is and jumps in at exactly the right point.

When to Use This Skill

• Use when starting a new project from scratch (greenfield)
• Use when improving an existing codebase (in-progress or mature)
• Use when fixing bugs, adding features, or refactoring
• Use when adding tests, linting, or CI/CD to a project
• Use when writing production-grade documentation
• Use when the user says "build me", "fix this", "squirrel this project", or any multi-step development task

How It Works

Step 0: Detect Mode

Squirrel classifies the project directory:

Signal	Mode	Entry Point
Empty directory	Greenfield	All 8 phases from scratch
Source files, no tests/docs	In-Progress	Audit first, then improve
Source + tests + CI + README	Mature	Targeted improvements
"fix this bug / add feature"	Targeted	Scoped work only

The 8-Phase Pipeline

1. Discover — Understand the project (audit existing code or gather requirements)
2. Plan — Concrete task list with dependencies