Hcf

HCF (Halt and Catch Fire)

Autonomous development plugin for Claude Code. Define requirements with a PM, then let parallel workers implement everything using TDD.

Table of Contents

- Overview
- Getting Started
  - Installation
  - Quick Start
- How It Works
  - Four Phases
  - Pipeline
  - Dependency Graph
  - Parallel Execution
  - TDD Methodology
- Reference
  - Files Created
  - Task Format
  - Skills
  - Outputs
- Architecture
- Advanced Configuration
  - Plans Directory
- Design Principles
- Development
  - Local Testing
  - Testing Workflow
  - Debugging
- Changelog
- Contributing
- License

Overview

HCF separates planning (human-in-the-loop) from execution (fully autonomous):

Getting Started

Installation

Add the marketplace, install, then reload:

Quick Start

1. Setup Project (one-time)

Interactively configures your project:
- Auto-detects tech stack (Laravel, React, etc.)
- Asks about testing, linting, architecture
- Creates .claude/ config directory

2. Plan a Feature

Just describe what you want:

The plan-create skill activates automatically to:
- Discover & brainstorm — explore the codebase and enumerate scope/assumption permutations a senior engineer would catch
- Create a feature/{plan-name} branch for the work
- Ask grounded clarifying questions categorized as must-answer vs will-default-if-silent
- Break down into tasks with dependencies
- Write requirements as test descriptions
- Create .claude/plans/user-auth/ with task files (or your configured plans directory)
- Run post-plan pipeline agents (devil's advocate by default) to find gaps before execution

After planning completes, you'll be asked:
Ready to begin autonomous implementation?
1. Yes, start now
2. No, I'll run it later

3. Execute Autonomously

If you chose "later" or want to re-run,…