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Install in OpenClaw
/install use-arc
Description
Provide instructions on how to build with Arc, Circle's blockchain where USDC is the native gas token. Arc offers key advantages: USDC as gas (no other nativ...
Usage Guidance
This skill appears to be the right kind of documentation for developing on Arc, but it has some risky and inconsistent pieces you should address before using it: 1) The SKILL.md expects ARC_TESTNET_RPC_URL and a PRIVATE_KEY but the skill metadata lists no required env vars — ask the publisher to declare these explicitly so you know what secrets are needed. 2) Do not use long-lived mainnet private keys for testing; use ephemeral testnet keys and a separate secrets manager or encrypted keystore. 3) Avoid passing private keys on the CLI; prefer keystores, hardware wallets, or interactive/import flows. 4) Be cautious about running remote installers piped to shell (curl | bash); verify the installer URL and checksum or install Foundry via a package manager or verified release. 5) Confirm the skill will only be invoked when you ask it to (it is not always-enabled), and review examples in the SKILL.md to ensure they match your security posture. If you rely on this skill in an automated agent, require the publisher to fix the metadata mismatch and remove/replace insecure install and CLI examples.
Capability Analysis
Type: OpenClaw Skill
Name: use-arc
Version: 0.1.0
The skill bundle provides legitimate instructions and documentation for building on Circle's Arc blockchain. It includes standard developer setup steps, such as installing Foundry via its official script, and proactively includes security rules for the AI agent to prevent private key exposure and ensure safe environment variable usage (SKILL.md).
Capability Assessment
Purpose & Capability
The name/description and the SKILL.md content are coherent: the document provides instructions for building on Arc Testnet and covers frontend, contract, and bridging patterns. However, the SKILL.md expects runtime credentials (ARC_TESTNET_RPC_URL and PRIVATE_KEY) that are not declared in the registry metadata (requires.env is empty). Declaring required credentials in metadata should match what the instructions need.
Instruction Scope
The instructions include sensitive operational steps: they reference setting PRIVATE_KEY environment variable and show a forge create command that uses --private-key $PRIVATE_KEY. The SKILL.md does include a security rule advising against passing private keys as CLI flags in deployed environments, but the example still demonstrates the insecure pattern (even if 'local only'). The doc also instructs downloading and running a remote install script for Foundry (curl | bash). These actions are within the skill's scope (deploying contracts) but introduce clear security risks that users must manage.
Install Mechanism
The skill is instruction-only (no install spec), which reduces surface area. However, it recommends installing Foundry with a remote installer via `curl -L https://foundry.paradigm.xyz | bash && foundryup`. Piping remote scripts to a shell is a high-risk pattern because arbitrary code is executed from the network; although common for some developer tools, it should be called out and replaced with safer install guidance or verification steps.
Credentials
SKILL.md expects ARC_TESTNET_RPC_URL and PRIVATE_KEY at runtime. Requesting a deployer private key is proportionate to a deployment skill, but the registry metadata does not declare these required env vars (nor a primary credential). This mismatch prevents automated reviewers from understanding the credential needs and increases the risk of accidental key exposure. The instructions also show an example that passes a private key on the CLI, which is explicitly discouraged elsewhere in the same document — inconsistent guidance that can lead to insecure usage.
Persistence & Privilege
The skill does not request always:true, does not declare system-level config paths, and has no install script that would alter agent-wide settings. It is instruction-only and therefore does not request persistent agent privileges beyond normal autonomous invocation (the default).
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install use-arc - After installation, invoke the skill by name or use
/use-arc - Provide required inputs per the skill's parameter spec and get structured output
Version History
v0.1.0
use-arc v0.1.0 initial release
- Provides instructions for building with Arc, Circle's USDC-native EVM chain (testnet only).
- Includes setup, network details, token addresses, and configuration steps for Foundry, Hardhat, viem/wagmi.
- Lists core concepts (USDC gas, dual decimals, EVM compatibility, testnet rules).
- Details security rules and development best practices specific to Arc.
- Documents how to bridge USDC to Arc and reference additional Circle developer skills.
- Includes direct links to Arc docs, explorer, and Circle resources.
Metadata
Frequently Asked Questions
What is Use Arc?
Provide instructions on how to build with Arc, Circle's blockchain where USDC is the native gas token. Arc offers key advantages: USDC as gas (no other nativ... It is an AI Agent Skill for Claude Code / OpenClaw, with 224 downloads so far.
How do I install Use Arc?
Run "/install use-arc" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Use Arc free?
Yes, Use Arc is completely free, licensed under MIT-0. You can download, install and use it at no cost.
Which platforms does Use Arc support?
Use Arc is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Use Arc?
It is built and maintained by Madelyn (@mscandlen3); the current version is v0.1.0.
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