# Ralph for Claude Code

![Version](https://img.shields.io/badge/version-0.9.1-blue)
![Status](https://img.shields.io/badge/status-active%20development-yellow)
![Tests](https://img.shields.io/badge/tests-145%20passing-green)
![Coverage](https://img.shields.io/badge/coverage-informational-lightgrey)
[![Mentioned in Awesome Claude Code](https://awesome.re/mentioned-badge.svg)](https://github.com/hesreallyhim/awesome-claude-code)

> **Autonomous AI development loop with intelligent exit detection and rate limiting**

Ralph is an implementation of the Geoffrey Huntley's technique for Claude Code that enables continuous autonomous development cycles he named after [Ralph Wiggum](https://ghuntley.com/ralph/). It enables continuous autonomous development cycles where Claude Code iteratively improves your project until completion, with built-in safeguards to prevent infinite loops and API overuse.

**Install once, use everywhere** - Ralph becomes a global command available in any directory.

## Project Status

**Version**: v0.9.1 - Active Development
**Core Features**: Working and tested
**Test Coverage**: 145 tests, 100% pass rate

### What's Working Now
- Autonomous development loops with intelligent exit detection
- Rate limiting with hourly reset (100 calls/hour, configurable)
- Circuit breaker with advanced error detection (prevents runaway loops)
- Response analyzer with semantic understanding and two-stage error filtering
- **JSON output format support with automatic fallback to text parsing**
- **Session continuity with `--continue` flag for context preservation**
- **Modern CLI flags: `--output-format`, `--allowed-tools`, `--no-continue`**
- Multi-line error matching for accurate stuck loop detection
- 5-hour API limit handling with user prompts
- tmux integration for live monitoring
- PRD import functionality
- **CI/CD pipeline with GitHub Actions**
- 151 passing tests across 7 test files

### Recent Improvements

**v0.9.2 - Prompt File Fix**
- Fixed critical bug: replaced non-existent `--prompt-file` CLI flag with `-p` flag
- Modern CLI mode now correctly passes prompt content via `-p "$(cat file)"`
- Added error handling for missing prompt files in `build_claude_command()`
- Added 6 new TDD tests for `build_claude_command` function
- Maintains shell injection safety through array-based command building

**v0.9.1 - Modern CLI Commands (Phase 1.1)**
- JSON output format support with `--output-format json` (default)
- Session continuity using `--continue` flag for cross-loop context
- Tool permissions via `--allowed-tools` flag
- Loop context injection with `build_loop_context()` function
- Backward-compatible: automatic fallback to text parsing
- 70 new tests: JSON parsing (20) + CLI modern (23) + CLI parsing (27)
- CI/CD pipeline with kcov coverage reporting

**v0.9.0 - Circuit Breaker Enhancements**
- Fixed multi-line error matching in stuck loop detection
- Eliminated JSON field false positives (e.g., `"is_error": false`)
- Added two-stage error filtering for accurate detection
- Comprehensive test suite: 22 new tests for error detection
- Fixed installation to include lib/ directory components

### In Progress
- Expanding test coverage
- Log rotation functionality
- Dry-run mode
- Configuration file support (.ralphrc)
- Metrics and analytics tracking
- Desktop notifications
- Git backup and rollback system

**Timeline to v1.0**: ~4 weeks | [Full roadmap](IMPLEMENTATION_PLAN.md) | **Contributions welcome!**

## Features

- **Autonomous Development Loop** - Continuously executes Claude Code with your project requirements
- **Intelligent Exit Detection** - Automatically stops when project objectives are complete
- **Rate Limiting** - Built-in API call management with hourly limits and countdown timers
- **5-Hour API Limit Handling** - Detects Claude's 5-hour usage limit and offers wait/exit options
- **Live Monitoring** - Real-time dashboard showing loop status, progress, and logs
- **Task Management** - Structured approach with prioritized task lists and progress tracking
- **Project Templates** - Quick setup for new projects with best-practice structure
- **Comprehensive Logging** - Detailed execution logs with timestamps and status tracking
- **Configurable Timeouts** - Set execution timeout for Claude Code operations (1-120 minutes)
- **Verbose Progress Mode** - Optional detailed progress updates during execution
- **Response Analyzer** - AI-powered analysis of Claude Code responses with semantic understanding
- **Circuit Breaker** - Advanced error detection with two-stage filtering, multi-line error matching, and automatic recovery
- **CI/CD Integration** - GitHub Actions workflow with automated testing

## Quick Start

Ralph has two phases: **one-time installation** and **per-project setup**.

```
INSTALL ONCE              USE MANY TIMES
+-----------------+          +----------------------+
| ./install.sh    |    ->    | ralph-setup project1 |
|                 |          | ralph-setup project2 |
| Adds global     |          | ralph-setup project3 |
| commands        |          | ...                  |
+-----------------+          +----------------------+
```

### Phase 1: Install Ralph (One Time Only)

Install Ralph globally on your system:

```bash
git clone https://github.com/frankbria/ralph-claude-code.git
cd ralph-claude-code
./install.sh
```

This adds `ralph`, `ralph-monitor`, and `ralph-setup` commands to your PATH.

> **Note**: You only need to do this once per system. After installation, you can delete the cloned repository if desired.

### Phase 2: Initialize New Projects (Per Project)

For each new project you want Ralph to work on:

#### Option A: Import Existing PRD/Specifications
```bash
# Convert existing PRD/specs to Ralph format (recommended)
ralph-import my-requirements.md my-project
cd my-project

# Review and adjust the generated files:
# - PROMPT.md (Ralph instructions)
# - @fix_plan.md (task priorities)
# - specs/requirements.md (technical specs)

# Start autonomous development
ralph --monitor
```

#### Option B: Manual Project Setup
```bash
# Create blank Ralph project
ralph-setup my-awesome-project
cd my-awesome-project

# Configure your project requirements manually
# Edit PROMPT.md with your project goals
# Edit specs/ with detailed specifications
# Edit @fix_plan.md with initial priorities

# Start autonomous development
ralph --monitor
```

### Ongoing Usage (After Setup)

Once Ralph is installed and your project is initialized:

```bash
# Navigate to any Ralph project and run:
ralph --monitor              # Integrated tmux monitoring (recommended)

# Or use separate terminals:
ralph                        # Terminal 1: Ralph loop
ralph-monitor               # Terminal 2: Live monitor dashboard
```

## How It Works

Ralph operates on a simple but powerful cycle:

1. **Read Instructions** - Loads `PROMPT.md` with your project requirements
2. **Execute Claude Code** - Runs Claude Code with current context and priorities
3. **Track Progress** - Updates task lists and logs execution results
4. **Evaluate Completion** - Checks for exit conditions and project completion signals
5. **Repeat** - Continues until project is complete or limits are reached

### Intelligent Exit Detection

Ralph automatically stops when it detects:
- All tasks in `@fix_plan.md` marked complete
- Multiple consecutive "done" signals from Claude Code
- Too many test-focused loops (indicating feature completeness)
- Strong completion indicators in responses
- Claude API 5-hour usage limit reached (with user prompt to wait or exit)

## Importing Existing Requirements

Ralph can convert existing PRDs, specifications, or requirement documents into the proper Ralph format using Claude Code.

### Supported Formats
- **Markdown** (.md) - Product requirements, technical specs
- **Text files** (.txt) - Plain text requirements
- **JSON** (.json) - Structured requirement data
- **Word documents** (.docx) - Business requirements
- **PDFs** (.pdf) - Design documents, specifications
- **Any text-based format** - Ralph will intelligently parse the content

### Usage Examples

```bash
# Convert a markdown PRD
ralph-import product-requirements.md my-app

# Convert a text specification
ralph-import requirements.txt webapp

# Convert a JSON API spec
ralph-import api-spec.json backend-service

# Let Ralph auto-name the project from filename
ralph-import design-doc.pdf
```

### What Gets Generated

Ralph-import creates a complete project with:

- **PROMPT.md** - Converted into Ralph development instructions
- **@fix_plan.md** - Requirements broken down into prioritized tasks
- **specs/requirements.md** - Technical specifications extracted from your document
- **Standard Ralph structure** - All necessary directories and template files

The conversion is intelligent and preserves your original requirements while making them actionable for autonomous development.

## Configuration

### Rate Limiting & Circuit Breaker

Ralph includes intelligent rate limiting and circuit breaker functionality:

```bash
# Default: 100 calls per hour
ralph --calls 50

# With integrated monitoring
ralph --monitor --calls 50

# Check current usage
ralph --status
```

The circuit breaker automatically:
- Detects API errors and rate limit issues with advanced two-stage filtering
- Opens circuit after 3 loops with no progress or 5 loops with same errors
- Eliminates false positives from JSON fields containing "error"
- Accurately detects stuck loops with multi-line error matching
- Gradually recovers with half-open monitoring state
- Provides detailed error tracking and logging with state history

### Claude API 5-Hour Limit

When Claude's 5-hour usage limit is reached, Ralph:
1. Detects the limit error automatically
2. Prompts you to choose:
   - **Option 1**: Wait 60 minutes for the limit to reset (with countdown timer)
   - **Option 2**: Exit gracefully (or auto-exits after 30-second timeout)
3. Prevents endless retry loops that waste time

### Custom Prompts

```bash
# Use custom prompt file
ralph --prompt my_custom_instructions.md

# With integrated monitoring
ralph --monitor --prompt my_custom_instructions.md
```

### Execution Timeouts

```bash
# Set Claude Code execution timeout (default: 15 minutes)
ralph --timeout 30  # 30-minute timeout for complex tasks

# With monitoring and custom timeout
ralph --monitor --timeout 60  # 60-minute timeout

# Short timeout for quick iterations
ralph --verbose --timeout 5  # 5-minute timeout with progress
```

### Verbose Mode

```bash
# Enable detailed progress updates during execution
ralph --verbose

# Combine with other options
ralph --monitor --verbose --timeout 30
```

### Exit Thresholds

Modify these variables in `~/.ralph/ralph_loop.sh`:

**Exit Detection Thresholds:**
```bash
MAX_CONSECUTIVE_TEST_LOOPS=3     # Exit after 3 test-only loops
MAX_CONSECUTIVE_DONE_SIGNALS=2   # Exit after 2 "done" signals
TEST_PERCENTAGE_THRESHOLD=30     # Flag if 30%+ loops are test-only
```

**Circuit Breaker Thresholds:**
```bash
CB_NO_PROGRESS_THRESHOLD=3       # Open circuit after 3 loops with no file changes
CB_SAME_ERROR_THRESHOLD=5        # Open circuit after 5 loops with repeated errors
CB_OUTPUT_DECLINE_THRESHOLD=70   # Open circuit if output declines by >70%
```

## Project Structure

Ralph creates a standardized structure for each project:

```
my-project/
├── PROMPT.md           # Main development instructions for Ralph
├── @fix_plan.md        # Prioritized task list (@ prefix = Ralph control file)
├── @AGENT.md           # Build and run instructions
├── specs/              # Project specifications and requirements
│   └── stdlib/         # Standard library specifications
├── src/                # Source code implementation
├── examples/           # Usage examples and test cases
├── logs/               # Ralph execution logs
└── docs/generated/     # Auto-generated documentation
```

## Best Practices

### Writing Effective Prompts

1. **Be Specific** - Clear requirements lead to better results
2. **Prioritize** - Use `@fix_plan.md` to guide Ralph's focus
3. **Set Boundaries** - Define what's in/out of scope
4. **Include Examples** - Show expected inputs/outputs

### Project Specifications

- Place detailed requirements in `specs/`
- Use `@fix_plan.md` for prioritized task tracking
- Keep `@AGENT.md` updated with build instructions
- Document key decisions and architecture

### Monitoring Progress

- Use `ralph-monitor` for live status updates
- Check logs in `logs/` for detailed execution history
- Monitor `status.json` for programmatic access
- Watch for exit condition signals

## System Requirements

- **Bash 4.0+** - For script execution
- **Claude Code CLI** - `npm install -g @anthropic-ai/claude-code`
- **tmux** - Terminal multiplexer for integrated monitoring (recommended)
- **jq** - JSON processing for status tracking
- **Git** - Version control (projects are initialized as git repos)
- **Standard Unix tools** - grep, date, etc.

### Testing Requirements (Development)

If you want to run the test suite:

```bash
# Install BATS testing framework
npm install -g bats bats-support bats-assert

# Run all tests (145 tests)
bats tests/

# Run specific test suites
bats tests/unit/test_rate_limiting.bats
bats tests/unit/test_exit_detection.bats
bats tests/unit/test_json_parsing.bats
bats tests/unit/test_cli_modern.bats
bats tests/unit/test_cli_parsing.bats
bats tests/integration/test_loop_execution.bats

# Run error detection and circuit breaker tests
./tests/test_error_detection.sh
./tests/test_stuck_loop_detection.sh
```

Current test status:
- **145 tests** across 7 test files
- **100% pass rate** (145/145 passing)
- Comprehensive unit and integration tests
- Specialized tests for JSON parsing, CLI flags, and circuit breaker functionality

> **Note on Coverage**: Bash code coverage measurement with kcov has fundamental limitations when tracing subprocess executions. Test pass rate (100%) is the quality gate. See [bats-core#15](https://github.com/bats-core/bats-core/issues/15) for details.

### Installing tmux

```bash
# Ubuntu/Debian
sudo apt-get install tmux

# macOS
brew install tmux

# CentOS/RHEL
sudo yum install tmux
```

## Monitoring and Debugging

### Live Dashboard

```bash
# Integrated tmux monitoring (recommended)
ralph --monitor

# Manual monitoring in separate terminal
ralph-monitor
```

Shows real-time:
- Current loop count and status
- API calls used vs. limit
- Recent log entries
- Rate limit countdown

**tmux Controls:**
- `Ctrl+B` then `D` - Detach from session (keeps Ralph running)
- `Ctrl+B` then `←/→` - Switch between panes
- `tmux list-sessions` - View active sessions
- `tmux attach -t <session-name>` - Reattach to session

### Status Checking

```bash
# JSON status output
ralph --status

# Manual log inspection
tail -f logs/ralph.log
```

### Common Issues

- **Rate Limits** - Ralph automatically waits and displays countdown
- **5-Hour API Limit** - Ralph detects and prompts for user action (wait or exit)
- **Stuck Loops** - Check `@fix_plan.md` for unclear or conflicting tasks
- **Early Exit** - Review exit thresholds if Ralph stops too soon
- **Execution Timeouts** - Increase `--timeout` value for complex operations
- **Missing Dependencies** - Ensure Claude Code CLI and tmux are installed
- **tmux Session Lost** - Use `tmux list-sessions` and `tmux attach` to reconnect

## Contributing

Ralph is actively seeking contributors! We're working toward v1.0.0 with clear priorities and a detailed roadmap.

### Quick Start for Contributors

1. **Fork and Clone**
   ```bash
   git clone https://github.com/YOUR_USERNAME/ralph-claude-code.git
   cd ralph-claude-code
   ```

2. **Install Dependencies**
   ```bash
   npm install -g bats bats-support bats-assert
   ./install.sh  # Install Ralph globally for testing
   ```

3. **Run Tests**
   ```bash
   npm test                    # Run all tests
   npm run test:unit          # Run unit tests only
   npm run test:integration   # Run integration tests only
   ```

### Priority Contribution Areas

**High Priority (Help Needed!)**
1. **Test Implementation** - We need more tests to reach comprehensive coverage
   - See [IMPLEMENTATION_PLAN.md](IMPLEMENTATION_PLAN.md) for detailed test specifications

2. **Feature Development**
   - Log rotation functionality
   - Dry-run mode
   - Config file support
   - Metrics tracking
   - Notifications
   - Backup/rollback

3. **Documentation**
   - TESTING.md guide
   - CONTRIBUTING.md (expand this section)
   - Usage tutorials and examples
   - Troubleshooting guides

4. **Real-World Testing**
   - Use Ralph on your projects
   - Report bugs and edge cases
   - Share your experience

### Development Guidelines

- **Tests Required**: All new features must include tests
- **Code Style**: Follow existing bash patterns and conventions
- **Documentation**: Update README and relevant docs for user-facing changes
- **Commit Messages**: Clear, descriptive commit messages
- **Branch Naming**: `feature/feature-name` or `fix/bug-description`

### Pull Request Process

1. Create a feature branch (`git checkout -b feature/amazing-feature`)
2. Make your changes with tests
3. Run full test suite: `npm test` (must pass 100%)
4. Update documentation if needed
5. Commit changes (`git commit -m 'Add amazing feature'`)
6. Push to your fork (`git push origin feature/amazing-feature`)
7. Open a Pull Request with:
   - Clear description of changes
   - Link to related issues
   - Test results
   - Screenshots (if UI/output changes)

### Development Roadmap Reference

See [IMPLEMENTATION_PLAN.md](IMPLEMENTATION_PLAN.md) for the complete roadmap including:
- Detailed test specifications
- Feature implementation guides
- Code examples for new functionality
- Success metrics and milestones

### Questions or Ideas?

- Open an issue for discussion
- Check existing issues for planned work
- Join discussions on pull requests

**Every contribution matters** - from fixing typos to implementing major features. Thank you for helping make Ralph better!

## License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.

## Acknowledgments

- Inspired by the [Ralph technique](https://ghuntley.com/ralph/) created by Geoffrey Huntley
- Built for [Claude Code](https://claude.ai/code) by Anthropic
- Community feedback and contributions

## Related Projects

- [Claude Code](https://claude.ai/code) - The AI coding assistant that powers Ralph
- [Aider](https://github.com/paul-gauthier/aider) - Original Ralph technique implementation

---

## Command Reference

### Installation Commands (Run Once)
```bash
./install.sh              # Install Ralph globally
./install.sh uninstall    # Remove Ralph from system
./install.sh --help       # Show installation help
```

### Ralph Loop Options
```bash
ralph [OPTIONS]
  -h, --help              Show help message
  -c, --calls NUM         Set max calls per hour (default: 100)
  -p, --prompt FILE       Set prompt file (default: PROMPT.md)
  -s, --status            Show current status and exit
  -m, --monitor           Start with tmux session and live monitor
  -v, --verbose           Show detailed progress updates during execution
  -t, --timeout MIN       Set Claude Code execution timeout in minutes (1-120, default: 15)
  --output-format FORMAT  Set output format: json (default) or text
  --allowed-tools TOOLS   Set allowed Claude tools (default: Write,Bash(git *),Read)
  --no-continue           Disable session continuity (start fresh each loop)
  --reset-circuit         Reset the circuit breaker
  --circuit-status        Show circuit breaker status
```

### Project Commands (Per Project)
```bash
ralph-setup project-name     # Create new Ralph project
ralph-import prd.md project  # Convert PRD/specs to Ralph project
ralph --monitor              # Start with integrated monitoring
ralph --status               # Check current loop status
ralph --verbose              # Enable detailed progress updates
ralph --timeout 30           # Set 30-minute execution timeout
ralph --calls 50             # Limit to 50 API calls per hour
ralph-monitor                # Manual monitoring dashboard
```

### tmux Session Management
```bash
tmux list-sessions        # View active Ralph sessions
tmux attach -t <name>     # Reattach to detached session
# Ctrl+B then D           # Detach from session (keeps running)
```

---

## Development Roadmap

Ralph is under active development with a clear path to v1.0.0. See [IMPLEMENTATION_PLAN.md](IMPLEMENTATION_PLAN.md) for the complete roadmap.

### Current Status: v0.9.1

**What's Delivered:**
- Core loop functionality with intelligent exit detection
- Rate limiting (100 calls/hour) and circuit breaker pattern
- Response analyzer with semantic understanding
- 145 comprehensive tests (100% pass rate)
- tmux integration and live monitoring
- PRD import functionality
- Installation system and project templates
- Modern CLI commands with JSON output support
- CI/CD pipeline with GitHub Actions

**Test Coverage Breakdown:**
- Unit Tests: 105 (CLI parsing, JSON, exit detection, rate limiting)
- Integration Tests: 40 (loop execution, edge cases)
- Test Files: 7

### Path to v1.0.0 (~4 weeks)

**Enhanced Testing**
- Installation and setup workflow tests
- tmux integration tests
- Monitor dashboard tests

**Core Features**
- Log rotation functionality
- Dry-run mode
- Configuration file support - .ralphrc

**Advanced Features & Polish**
- Metrics and analytics tracking
- Desktop notifications
- Git backup and rollback system
- End-to-end tests
- Final documentation and release prep

See [IMPLEMENTATION_STATUS.md](IMPLEMENTATION_STATUS.md) for detailed progress tracking.

### How to Contribute
Ralph is seeking contributors! Priority areas:
1. **Test Implementation** - Help expand test coverage ([see plan](IMPLEMENTATION_PLAN.md))
2. **Feature Development** - Log rotation, dry-run mode, config files
3. **Documentation** - Usage examples, tutorials, troubleshooting guides
4. **Bug Reports** - Real-world usage feedback and edge cases

See [Contributing](#contributing) section above for guidelines.

---

**Ready to let AI build your project?** Start with `./install.sh` and let Ralph take it from there!

## Star History

[![Star History Chart](https://api.star-history.com/svg?repos=frankbria/ralph-claude-code&type=date&legend=top-left)](https://www.star-history.com/#frankbria/ralph-claude-code&type=date&legend=top-left)