A zero-configuration tool for generating EIP-681 compliant Ethereum payment links and QR codes across multiple EVM chains.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install eth-payment
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install eth-payment using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is eth-payment?
The eth-payment skill is a high-utility developer tool designed to streamline the creation of standardized Ethereum payment requests. By utilizing Openclaw Skills, users can instantly generate EIP-681 compliant links that interface seamlessly with MetaMask and other major mobile wallets. This skill eliminates the need for complex server-side logic or third-party API keys, providing a privacy-focused, local-first approach to web3 payments.
Whether you are building a checkout flow, setting up a donation portal, or sending a simple invoice, this addition to your Openclaw Skills provides a reliable way to handle ETH and ERC-20 transactions across various networks. It supports popular ecosystems including Base, Ethereum, Arbitrum, Optimism, and Polygon out of the box.
eth-payment Use Cases
- Creating professional crypto invoices for freelance services or business transactions.
- Generating mobile-friendly QR codes for physical points of sale or in-person payments.
- Setting up easy-to-use donation links for content creators and open-source contributors.
- Automating the generation of payment URIs for integration into existing web or mobile applications.
- Verifying the validity of Ethereum addresses before initiating payment requests.
How eth-payment Works
- The user inputs the recipient's wallet address, the desired amount, and the specific token or network via the command line.
- The skill fetches the relevant chain and token metadata from its internal configuration.
- It constructs a standardized EIP-681 URI that encodes the payment parameters (to, value, token contract).
- If the QR flag is used, it generates a local image file of the payment link for easy scanning.
- The skill outputs a structured response including the raw URI, a MetaMask deep link, and transaction data for programmatic use.
eth-payment Setup
To start using this capability within your Openclaw Skills environment, you can run the following commands to generate payment requests immediately.
# Create a basic ETH payment link on the Base network
eth-payment create --to 0xYourAddress --amount 0.1
# Create a USDC payment request with a generated QR code image
eth-payment create --to 0xYourAddress --amount 100 --token USDC --qr payment.png
# Specify a different network such as Ethereum Mainnet
eth-payment create --to 0xYourAddress --amount 10 --token USDC --network ethereum --qr qr.png
eth-payment Data Schema & Taxonomy
The eth-payment skill organizes its network and token data in a structured format to ensure compatibility across different EVM chains.
| Component | Description |
|---|---|
config/chains.json |
The central registry for Chain IDs, native tokens, and ERC-20 contract addresses. |
create --json |
Provides a structured JSON object containing link, transaction, and network metadata. |
chains |
A list of all supported blockchain environments and their associated metadata. |
The JSON output for a payment request includes detailed fields such as chain_id, recipient, links (EIP-681 and MetaMask), and raw transaction hex data.
eth-payment Advanced Features
- Multi-chain support for leading Layer 2 solutions including Base, Optimism, and Arbitrum.
- Programmatic JSON output mode for piping data into other automated Openclaw Skills.
- Custom token extensibility allowing users to add any ERC-20 token by editing the local configuration file.
- Zero-dependency QR code generation that runs entirely on your local machine for maximum security.
- Built-in address validation to ensure payment requests are sent to correctly formatted EVM addresses.
SKILL.md
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