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# `agent-receipts`

### Append-only local receipts for AI agent actions: capture commands, outputs, and handoff evidence, then expose them to agents over MCP.

![License](https://img.shields.io/badge/license-MIT-blue.svg) ![Language](https://img.shields.io/badge/language-python-green.svg) ![Status](https://img.shields.io/badge/status-active-success.svg) [![PyPI](https://img.shields.io/pypi/v/agent-receipts)](https://pypi.org/project/agent-receipts/) [![Tests](https://github.com/agent-receipts/agent-receipts/actions/workflows/tests.yml/badge.svg)](https://github.com/agent-receipts/agent-receipts/actions)

<img src="demo.gif" alt="Demo" width="700" />

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## 🎯 Why?

Trending agent projects increasingly mention evidence logs, verifiable handoffs, and agent observability, but most solutions are large frameworks or platform-specific hubs. Developers using Claude Code, Codex, OpenCode, or custom agents need a tiny local-first tool that simply records what happened and proves it was not edited. agent-receipts fills that gap with a zero-depend CLI plus a minimal MCP adapter.

**Target audience:** Developers running AI coding agents, agent-framework authors, and platform/security engineers who need lightweight local audit trails, reproducible handoffs, and evidence that an agent really ran a command or completed a step.

## ✨ Features

- ✨ **Capture command executions with stdout/stderr tails, exit codes, duration, cwd, agent, session, and tags**
- ✨ **Append-only hash-chained JSONL receipts with tamper detection via verify**
- ✨ **Manual evidence notes for handoffs, plus search/export and a minimal MCP stdio server**

## 🚀 Quick Start

```bash
# Install
pip install agent-receipts

# Run
agent-receipts --help
```

## 📦 Installation

### From Source

```bash
git clone https://github.com/YOUR_USERNAME/agent-receipts.git
cd agent-receipts
```

```bash
# Create virtual environment
python -m venv .venv
source .venv/bin/activate  # Windows: .venv\Scripts\activate

# Install in development mode
pip install -e ".[dev]"

# Run tests
pytest -v
```

## 🎬 Demo

The GIF above was recorded using [Charm VHS](https://github.com/charmbracelet/vhs):

```bash
vhs < demo.tape
```

## 📖 Usage

```bash
# Show help
agent-receipts --help

# Common usage examples
agent-receipts --example
```

## 🏗️ Architecture

```mermaid
graph LR
    A[Input] --> B[Core Engine]
    B --> C[Output]
    B --> D[Plugins]
    D --> E[Extensions]
```

## 🤝 Contributing

Contributions are welcome! Please:

1. Fork the repo
2. Create a feature branch (`git checkout -b feature/amazing-feature`)
3. Commit your changes (`git commit -m 'Add amazing feature'`)
4. Push to the branch (`git push origin feature/amazing-feature`)
5. Open a Pull Request

## 📄 License

MIT © 2026 — See [LICENSE](LICENSE) for details.

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