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payment-skill

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Agentic skill for requesting and accepting payments from / to humans and agents

// repository documentation

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# Payment skill for AI agents

Agentic skill for AI agents to request and receive payments. If you are looking for the agentic skill to make payments for services and products, checkout https://money.flows.network

## Quick start

Copy and paste the following sentence to give your agent the ability to request and receive payments.

For OpenClaw:

> Read https://raw.githubusercontent.com/second-state/payment-skill/refs/heads/main/openclaw/skills/payment/install.md and follow the instructions to set up the skill to request and receive payments from agents and humans.

For Claude Code:

> Read https://raw.githubusercontent.com/second-state/payment-skill/refs/heads/main/claude/skills/payment/install.md and follow the instructions to set up the skill to request and receive payments from agents and humans.

## Overview

This project provides four CLI tools for Ethereum wallet management and token payments:

### create-wallet

Creates a new Ethereum-compatible wallet with a secure random private key. The wallet is encrypted using the Web3 Secret Storage standard (keystore format) and saved to disk.

```bash
create-wallet [OPTIONS]
```

Key features:
- Generates cryptographically secure private keys
- Encrypts wallet using scrypt + AES-128-CTR
- Auto-generates secure password if not provided
- Outputs the wallet address to stdout

### get-address

Retrieves the Ethereum address and token balance from an existing wallet without requiring the password.

```bash
get-address [OPTIONS]
```

Key features:
- Reads address directly from keystore (no decryption needed)
- Queries current token balance from blockchain (if network configured)
- Outputs JSON with address, balance, token info, and network
- Creates a new wallet automatically if none exists

### pay

Transfers ERC-20 tokens or native ETH from your wallet to a recipient address.

```bash
pay --to <ADDRESS> --amount <AMOUNT> [OPTIONS]
```

Key features:
- Supports ERC-20 token transfers (USDC, etc.)
- Supports native ETH/gas token transfers
- Checks balance before sending
- Waits for transaction confirmation by default
- Uses configuration for network and token defaults

### payment-config

Manages configuration for all x402 tools. Stores settings in `config.toml` (located in the skill root directory, alongside the binaries).

```bash
payment-config <COMMAND>
```

Commands:
- `show` - Display all current configuration
- `get <KEY>` - Get a specific config value
- `set <KEY> <VALUE>` - Set config values
- `use-network <PROFILE>` - Apply a predefined network profile (base-sepolia, base-mainnet, etc.)
- `list-networks` - List available network profiles
- `list-keys` - List all valid config keys

## Personal Data Storage

All personal data is stored in the skill root directory (the parent of the `scripts/` directory where binaries live):

```
<skill-root>/
├── config.toml      # Network, token, and payment settings
├── wallet.json      # Encrypted wallet keystore (Web3 Secret Storage format)
└── password.txt     # Wallet password (auto-generated, 600 permissions)
```

The data directory is determined at runtime via `std::env::current_exe()` — each binary resolves paths relative to its own location (`../` from the `scripts/` directory).

## Skill Directory Structure

Platform-specific skill files live under `claude/` and `openclaw/`:

```
claude/skills/payment/       # For Claude Code
├── bootstrap.sh
├── config-default.toml
├── install.md
├── SKILL.md
└── scripts/

openclaw/skills/payment/     # For OpenClaw
├── bootstrap.sh
├── config-default.toml
├── install.md
├── SKILL.md
└── scripts/
```

### How Installation Works

1. **Clone skill files**: The install script copies the platform-specific directory to the agent's skill path:
   - Claude Code: `~/.claude/skills/payment/`
   - OpenClaw: `~/.openclaw/skills/payment/`

2. **Bootstrap binaries**: Running `bootstrap.sh` detects your platform (OS + architecture) and downloads the appropriate pre-compiled binaries from GitHub Releases

3. **Binary installation**: Binaries are extracted to the `scripts/` subdirectory and made executable

Supported platforms:
- Linux x86_64 / aarch64
- macOS x86_64 / aarch64 (Apple Silicon)
- Windows x86_64

### Final installed structure

```
~/.claude/skills/payment/          # (or ~/.openclaw/skills/payment/)
├── bootstrap.sh
├── config.toml          # Created from config-default.toml
├── wallet.json          # Created by create-wallet
├── password.txt         # Auto-generated wallet password
├── SKILL.md
└── scripts/
    ├── create-wallet
    ├── get-address
    ├── pay
    └── payment-config
```

## Development

This is a Rust workspace with the following crates:

| Crate | Description |
|-------|-------------|
| `payment-common` | Shared library for configuration, errors, and utilities |
| `create-wallet` | Wallet creation CLI |
| `get-address` | Address retrieval CLI |
| `pay` | Token payment CLI |
| `payment-config` | Configuration management CLI |

### Building

```bash
cargo build --release
```

### Running tests

```bash
cargo test
```

### Cross-compilation

The project uses GitHub Actions to build binaries for all supported platforms. See `.github/workflows/ci.yml` for the CI configuration.

## License

See [LICENSE](LICENSE) for details.

payment-skill

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