CoinFello’s OpenClaw Skill: Secure Onchain Execution for AI Agents.
We have been quietly solving the hardest problem in AI x Web3: how do you give your agent spending power without giving it your wallet? Today we are shipping the answer.
The CoinFello OpenClaw skill is live now. It is the first production-grade, fully self-custodial framework for AI agents to execute onchain transactions, built on ERC-4337 smart accounts and ERC-7710 delegations with the MetaMask Smart Accounts Kit.
Why giving your AI agent a private key is a security risk
Giving your MoltBot a private key is like handing a stranger your wallet and hoping they are trustworthy. Prompt injection attacks are real. Your agent cannot always tell friend from foe. Once a key is exposed, everything is exposed.
The workarounds in use today all share the same fundamental flaw:
Hardcoded keys: Full exposure if your agent is compromised. Any prompt injection attack can drain everything.
API key wallets: Someone else holds your funds. Does not pass the walkaway test. If the provider goes down, you may lose access to your keys entirely.
Generic Agents: Web3 is complicated, and you need an agent specialized in Web3 to perform onchain reads and writes. CoinFello is optimized for Web3. Your OpenClaw agent isn’t.
Topping up manually: Constantly sending small amounts to a hot wallet is a second job, not a solution.
None of these approaches were built for a world where AI agents operate autonomously, 24 hours a day, making valuable financial decisions on your behalf. We need something better.
Introducing the CoinFello OpenClaw skill
The CoinFello OpenClaw skill gives your MoltBot a spending allowance from your existing MetaMask wallet. One signature. Fine-grained permissions. Your keys never leave your device.
Built on ERC-4337 smart accounts and ERC-7710 delegations, it follows the principle of least privilege: your OpenClaw agent grants CoinFello only the permissions required to complete a specific task. No agent ever receives broader wallet access than absolutely necessary. When you submit a natural language request, CoinFello converts your instruction into a delegation and validates it in an evaluation layer before execution.
If we want agents to participate meaningfully in the onchain economy, we need a security model that is better than handing an autonomous system a private key.
Our work on the CoinFello Skill shows a better path: hardware-isolated keys, fine-grained delegations, and production-grade crypto capabilities that other agents can plug into immediately.
That’s the kind of infrastructure we believe will push forward agent adoption onchain in a safe and scalable way.
Brett Cleary, CTO at CoinFello
Your private key stays on your device at all times. Agents execute actions through fine-grained ERC-7710 delegations without ever accessing the private key. This is a meaningful step forward from the current status quo, where agents typically store private keys or API credentials in plain text.
What is shipped today
The OpenClaw skill launches with a full suite of production-ready capabilities across wallet management, delegations, onchain transactions, and automations.
Wallet and account management
Smart Account Creation: Create an ERC-4337 Smart Account with a single prompt.
Sign-In with Ethereum: Authenticate with CoinFello using EIP-4361 SIWE.
Get Account / Get Address: CLI commands to display your current smart account address at any time.
Delegations and permissions
Set Delegation (Allowance): Your OpenClaw agent sets a delegation to CoinFello with defined limits.
Delegation via Natural Language: Your OpenClaw agent with CoinFello parses plain English prompts into delegation requests.
Sub-Delegation to Other Agents: Your OpenClaw agent can consensually delegate to other agents with scoped permissions. Foundation for the multi-agent ecosystem.
All tokens supported: Full support for ERC-20, ERC-721, and ERC-1155 tokens.
Onchain transactions
Send Tokens: Send native gas, ERC-20, ERC-721, or ERC-1155 tokens to any address or ENS name via simple prompts.
Token Swaps: Best-price token swaps executed through CoinFello routing.
Staking: Stake assets on supported chains.
Bridging: Cross-chain bridging abstracted behind natural language prompts. No need to know source or destination chain details.
Transaction Status Tracking: Check status of previously submitted transactions via CLI. Returns block explorer links.
Multi-Chain Support: Supported across the top EVM chains and expanding to the broader EVM ecosystem.
Automations
DCA Automations: Dollar-cost averaging with recurring buy and swap on a set schedule.
Custom Prompt Cron Jobs: Messaging your OpenClaw agent “create a cron job where you [do something onchain]” can create an automation for any onchain action.
Portfolio Rebalancing: Automatically rebalance your token portfolio via a plain English prompt. CoinFello handles routing, swaps, and execution.
Agent interoperability
Configurable Agent Backend: CoinFello is the default execution agent, but fully configurable. MoltBots can delegate to any compatible Web3 agent.
Getting started
The skill is available on ClawHub now. Setup takes under two minutes.
1. Install the skill: clawhub install coinfello
2. Prompt your MoltBot: “initialize your smart account”
3. Fund the address your MoltBot returns with any onchain asset.
4. Try a prompt: “swap 0.1 ETH to USDC on Base”
5. A few seconds later: transaction success message and a block explorer link.
Built to be open
CoinFello is the default execution agent for your MoltBot, but it is not the only option. The skill is designed to allow MoltBots to delegate to any compatible onchain agent.
The OpenClaw skill is released under the MIT license, allowing developers to freely deploy, modify, and contribute in their own AI agent environments. It is compatible with OpenClaw environments and Claude Code.
The OpenClaw ecosystem is moving fast
This release comes at a pivotal moment for the OpenClaw ecosystem. Over the past two months, the OpenClaw GitHub repository has surpassed 150,000 stars and 22,000 forks, while npm downloads exceeded 416,000 in the previous 30 days. MoltBots are already organising into businesses, hiring humans, and making onchain payments. The infrastructure needed to do this safely and at scale has not kept pace. The CoinFello OpenClaw skill is built to close that gap.
Get your MoltBot onchain in 30 seconds.
The CoinFello OpenClaw skill is live today. We would love to hear what you think. Comment on this post, find us at hello@coinfello.com, or tag @CoinFello on X with what your MoltBot does first.
X: @CoinFello