How to integrate Coinbase Wallet MCP with Atomic Agent

Connect Atomic Agent to Coinbase Wallet MCP. List recent transactions from your wallet, initiate a 0.01 eth transfer now, and more using natural language, with authentication handled for you.

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Coinbase Wallet MCP is Coinbase's wallet service for interacting with onchain accounts. Use it to give agents secure, structured access to inspect wallets and request onchain actions.

15 Tools

Introduction

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including Coinbase Wallet.

This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a Coinbase Wallet account. See the Atomic Agent documentation for installation instructions.

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How Atomic Agent connects to Coinbase Wallet

Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.

Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

Connect Coinbase Wallet to Atomic Agent

  1. Sign up or sign in to the Composio dashboard. Copy your API key.
  2. In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
  3. Ask Atomic Agent to do something in Coinbase Wallet. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Coinbase Wallet account, then return to Atomic Agent to continue.

Headless setup

Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

bash
COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY

What is the Coinbase Wallet MCP server, and what's possible with it?

The Coinbase Wallet MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Coinbase Wallet account. It provides structured and secure access so your agent can perform Coinbase Wallet operations on your behalf.

Use Coinbase Wallet from Atomic Agent

With your account connected, ask Atomic Agent to work with Coinbase Wallet in natural language. You can connect more apps through the same Composio integration as you need them.

Visit the Atomic Agent website or inspect the Atomic Agent source code.

Troubleshooting

Why is my API key rejected?

Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying.

Why are Composio tools unavailable after saving a key?

Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk.

Does Composio have a free plan?

The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See Composio pricing for the current limits that apply to your connection.

TOOLS

Supported Tools

Every Coinbase Wallet MCP action and event your agent gets out of the box.

Chain rpc request

Make a read-only JSON-RPC call to inspect on-chain state on a supported chain (arbitrum, avalanche, base, base-sepolia, bsc, ethereum, optimism, polygon, robinhood-chain).

Complete x402 request

Complete a previously initiated x402 payment after the user has approved it in their Base Account.

Fund

Create a funding request to add money to (top up) the user's wallet.

Get portfolio

Returns total portfolio value and per-asset breakdown for a wallet address.

Get request status

Poll the status of an approval request by requestId (returned by send, sign, swap, or send_calls).

Get transaction history

Returns paginated transaction history in reverse chronological order for a single chain.

Get wallets

Returns the user's Base Account and all agent wallets with delegation status, spend policy, and session authorization.

Help

Returns guidance for helping the user with protocol-specific tasks that aren't directly supported by this MCP.

Initiate x402 request

Initiate an HTTPS request to an x402-enabled endpoint.

Search tokens

Search for tokens by symbol or name on a single chain.

Send

Send native tokens or any ERC-20.

Send calls

Submit a batch of raw contract calls for user approval.

Sign

Request a user-approved signature.

Swap

Swap between tokens on a mainnet chain (testnets not supported).

Web request

Make an HTTP GET or POST request to a whitelisted partner API.

FAQ

Frequently asked questions

With a standalone Coinbase Wallet MCP server, the agents and LLMs can only access a fixed set of Coinbase Wallet tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Coinbase Wallet and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Atomic Agent fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Coinbase Wallet tools.

Yes, absolutely. You can configure which Coinbase Wallet scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Coinbase Wallet data and credentials are handled as safely as possible.

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