A specialized skill for building applications on Arc, Circle's EVM-compatible blockchain where USDC is used as the native gas token.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install use-arc
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 use-arc 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 Arc Blockchain Integration?
Arc is a developer-centric blockchain designed by Circle that revolutionizes transaction economics by using USDC as its native gas token. By leveraging Openclaw Skills for Arc, developers can build USDC-first applications that benefit from sub-second finality and predictable transaction costs. This EVM-compatible network supports standard Solidity tooling, allowing for seamless integration of smart contracts, DeFi protocols, and payment applications without the volatility of traditional native tokens. Using this skill ensures that your AI agent understands the specific nuances of Arc, such as its dual-decimal system and testnet configurations.
Arc Blockchain Integration Use Cases
- Developing payment applications that require USDC as the native gas token for simplified user experiences.
- Deploying EVM-compatible smart contracts using Foundry or Hardhat on the Arc Testnet.
- Configuring blockchain projects with the correct Arc RPC and Chain ID details automatically.
- Bridging stablecoins like USDC to Arc using CCTP for cross-chain liquidity and settlement.
- Building DeFi protocols that prioritize cost predictability and fast confirmation times.
How Arc Blockchain Integration Works
- The Openclaw Skills agent identifies Arc-related triggers such as USDC gas, Arc Testnet, or CCTP bridging requests.
- It configures the development environment with the specific RPC URL (https://rpc.testnet.arc.network) and Chain ID 5042002.
- The agent provides instructions for wallet funding via the Circle faucet to ensure the developer has necessary testnet USDC.
- It assists in smart contract deployment, ensuring that 18-decimal formatting is used for native gas and 6-decimal for ERC-20 USDC.
- The skill integrates with frontend frameworks like Wagmi or Viem by utilizing the native arcTestnet chain definitions.
Arc Blockchain Integration Setup
To begin using this skill within your environment, configure your local variables and ensure Foundry is installed for contract management.
# Set up environment variables
export ARC_TESTNET_RPC_URL=https://rpc.testnet.arc.network
export PRIVATE_KEY=your_private_key_here
# Install Foundry if not present
curl -L https://foundry.paradigm.xyz | bash && foundryup
# Deploy a contract to Arc Testnet
forge create src/MyContract.sol:MyContract \
--rpc-url $ARC_TESTNET_RPC_URL \
--private-key $PRIVATE_KEY \
--broadcast
Arc Blockchain Integration Data Schema & Taxonomy
The Openclaw Skills framework for Arc organizes network data and token addresses into a clear taxonomy for developer reference:
| Property | Value | Note |
|---|---|---|
| Network Name | Arc Testnet | Primary development environment |
| Chain ID | 5042002 | Required for provider configuration |
| USDC Address | 0x3600000000000000000000000000000000000000 | Native ERC-20 on Arc |
| EURC Address | 0x89B50855Aa3bE2F677cD6303Cec089B5F319D72a | Stable Euro token |
| Gas Decimals | 18 | Used for native transaction fees |
| Token Decimals | 6 | Standard USDC/EURC precision |
Arc Blockchain Integration Advanced Features
- Comprehensive CCTP bridge integration for seamless cross-chain USDC transfers via domain 26.
- Native support for Circle's Smart Contract Platform using pre-audited templates for ERC-20, ERC-721, and ERC-1155.
- Multi-agent orchestration support through Openclaw Skills for complex DeFi workflows.
- Enhanced security validation to prevent hardcoding of private keys in deployment scripts.
- Integration with developer-controlled and user-controlled wallets for non-custodial application architectures.
SKILL.md
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