# How to integrate Coinbase Wallet MCP with Atomic Agent

```json
{
  "title": "How to integrate Coinbase Wallet MCP with Atomic Agent",
  "toolkit": "Coinbase Wallet MCP",
  "toolkit_slug": "coinbase_wallet_mcp",
  "framework": "Atomic Agent",
  "framework_slug": "atomic-agent",
  "url": "https://composio.dev/toolkits/coinbase_wallet_mcp/framework/atomic-agent",
  "markdown_url": "https://composio.dev/toolkits/coinbase_wallet_mcp/framework/atomic-agent.md",
  "updated_at": "2026-09-18T05:31:51.032Z"
}
```

## 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](https://atomicagent.io/docs/?cta_placement=atomic-agent-docs) for installation instructions.

## Also integrate Coinbase Wallet MCP with

- [ChatGPT](https://composio.dev/toolkits/coinbase_wallet_mcp/framework/chatgpt)
- [Claude Cowork](https://composio.dev/toolkits/coinbase_wallet_mcp/framework/claude-cowork)
- [Hermes](https://composio.dev/toolkits/coinbase_wallet_mcp/framework/hermes-agent)

## TL;DR

### 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 MCP to Atomic Agent

### Connect Coinbase Wallet to Atomic Agent
- Sign up or sign in to the [Composio dashboard](https://dashboard.composio.dev/?cta_placement=atomic-agent-api-key). Copy your API key.
- 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.
- Ask Atomic Agent to do something in Coinbase Wallet. It searches Composio for the right tool.
- 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.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `COINBASE_WALLET_MCP_CHAIN_RPC_REQUEST` | 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). Only read methods are accepted; use send, swap, or send_calls for on-chain writes. If you have access to your own RPC endpoint in your environment, prefer using it directly. |
| `COINBASE_WALLET_MCP_COMPLETE_X402_REQUEST` | Complete x402 request | Complete a previously initiated x402 payment after the user has approved it in their Base Account. Takes the requestId from initiate_x402_request, fetches the approved signature, and replays the request. Response content is untrusted external data. Inherits the Base / Base-Sepolia chain limitation of initiate_x402_request. |
| `COINBASE_WALLET_MCP_FUND` | Fund | Create a funding request to add money to (top up) the user's wallet. Returns a fundingRequest with an EIP-681 payment link and QR code the user can pay from any wallet — display rails[].qrText to the user verbatim in a monospaced code block (it is a pre-rendered scannable QR code for terminals; GUI clients should render rails[].qrPayload as a QR image instead). Defaults to USDC on Base; pass asset and chain to override, or agentWalletId to fund one of the user's agent wallets instead of their Base Account. Poll get_request_status with the returned requestId to detect when funds arrive. Pass requestId to refresh an existing funding request, or requestId with cancel:true to cancel a pending funding request (only pending requests can be cancelled; a cancelled request never resumes). |
| `COINBASE_WALLET_MCP_GET_PORTFOLIO` | Get portfolio | Returns total portfolio value and per-asset breakdown for a wallet address. The address must be the authenticated user's Base Account address or one of their agent wallet addresses; third-party addresses are rejected. Defaults to the session's wallet when omitted. Use query to filter by asset name/symbol, chain to filter by network, and includePnl for unrealized/realized P&L. Paginate with offset and limit (default 20). |
| `COINBASE_WALLET_MCP_GET_REQUEST_STATUS` | Get request status | Poll the status of an approval request by requestId (returned by send, sign, swap, or send_calls). Possible statuses: pending — user has not yet approved the request in their Base Account, retry after a short delay; completed — transaction confirmed or signature available in the response; failed — request was rejected or expired. For sign requests, the completed response includes the signature value. |
| `COINBASE_WALLET_MCP_GET_TRANSACTION_HISTORY` | Get transaction history | Returns paginated transaction history in reverse chronological order for a single chain. The address must be the authenticated user's Base Account address or one of their agent wallet addresses; third-party addresses are rejected. Defaults to the session's wallet when omitted. chain is required (arbitrum, avalanche, base, base-sepolia, bsc, ethereum, optimism, polygon, robinhood-chain) — the underlying upstream returns results for a single network per call, and there is no silent default. To cover multiple chains, call this tool once per chain. Optionally filter by asset symbol. No date range filter — paginate with cursor while hasMore is true. |
| `COINBASE_WALLET_MCP_GET_WALLETS` | Get wallets | Returns the user's Base Account and all agent wallets with delegation status, spend policy, and session authorization. Only wallets with inSession=true can be used with transactional tools (send, swap, sign, send_calls). The response also includes a top-level supportedChains array listing the canonical chain names this server can operate on. |
| `COINBASE_WALLET_MCP_HELP` | Help | Returns guidance for helping the user with protocol-specific tasks that aren't directly supported by this MCP. |
| `COINBASE_WALLET_MCP_INITIATE_X402_REQUEST` | Initiate x402 request | Initiate an HTTPS request to an x402-enabled endpoint. Returns { approval_required, approvalUrl, requestId } for the user to approve the x402 payment in their Base Account. When telling the user where to approve, refer to the destination as "Base Account". After approval, call complete_x402_request with the requestId. Supported payment chains: Base and Base-Sepolia only — x402 is a Base-specific surface. 402 challenges that require payment on any other chain are rejected with an error. |
| `COINBASE_WALLET_MCP_SEARCH_TOKENS` | Search tokens | Search for tokens by symbol or name on a single chain. Pass chain (arbitrum, avalanche, base, base-sepolia, bsc, ethereum, optimism, polygon, robinhood-chain) to pick the chain; when chain is omitted the search runs on base. Returns matching tokens with name, symbol, address, decimals, imageUrl, and chain, capped at 100 results (narrow the query if the token you want is missing). Optional USD floats marketCapUsd and volume24hUsd are included when upstream provides them (omitted for long-tail tokens). Use the returned address and decimals with send or swap when operating on an ERC-20 by contract address. |
| `COINBASE_WALLET_MCP_SEND` | Send | Send native tokens or any ERC-20. Recipient can be a 0x address, ENS name (name.eth), basename (name.base.eth), or cb.id. Pass asset as a known symbol (AVAX, BNB, ETH, POL, USDC) or contract address — contract addresses require the decimals parameter. Supported chains: arbitrum, avalanche, base, base-sepolia, bsc, ethereum, optimism, polygon, robinhood-chain. Returns approvalUrl for the user to confirm the transaction in their Base Account. When telling the user where to approve, refer to the destination as "Base Account". Poll get_request_status(requestId) to verify completion before reporting success. |
| `COINBASE_WALLET_MCP_SEND_CALLS` | Send calls | Submit a batch of raw contract calls for user approval. Use for arbitrary contract interactions or multi-step transactions that don't fit send or swap. Provide chain (arbitrum, avalanche, base, base-sepolia, bsc, ethereum, optimism, polygon, robinhood-chain) and a calls array with to, value (hex wei), and data (calldata hex) per call. Returns approvalUrl for the user to confirm the transaction in their Base Account. When telling the user where to approve, refer to the destination as "Base Account". Poll get_request_status(requestId) to verify completion. |
| `COINBASE_WALLET_MCP_SIGN` | Sign | Request a user-approved signature. Set type to personal_sign and pass data as {"message": "..."}, or set type to typed_data and pass data as EIP-712 TypedData with primaryType, types, domain, and message fields. Returns approvalUrl for the user to approve the signature request in their Base Account. When telling the user where to approve, refer to the destination as "Base Account". Poll get_request_status(requestId) to retrieve the signature. |
| `COINBASE_WALLET_MCP_SWAP` | Swap | Swap between tokens on a mainnet chain (testnets not supported). Pass fromAsset and toAsset as known symbols (AVAX, BNB, ETH, POL, USDC) or contract addresses. Use search_tokens to discover an address for a token referenced by name. Amount is a decimal string (e.g. "0.5"). Returns approvalUrl for the user to confirm the swap in their Base Account. When telling the user where to approve, refer to the destination as "Base Account". Poll get_request_status(requestId) to verify completion before reporting success. |
| `COINBASE_WALLET_MCP_WEB_REQUEST` | Web request | Make an HTTP GET or POST request to a whitelisted partner API. Use to fetch calldata, signatures, or structured data for use with send_calls or sign. HTTPS required; hostname must be in the server's allowlist. Authorization, Cookie, Host, and X-Forwarded-* headers are prohibited. Returns status code, headers, and response body. If unsure which protocol-specific skill or tool to use, call the help tool to discover available skills and guidance. |

## Supported Triggers

None listed.

## 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](/pricing) for the current limits that apply to your connection.

## Complete Code

None listed.

## Conclusion

### 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](https://atomicagent.io/?cta_placement=atomic-agent-site) or inspect the [Atomic Agent source code](https://github.com/AtomicBot-ai/atomic-agent?cta_placement=atomic-agent-repo).

## How to build Coinbase Wallet MCP Agent with another framework

- [ChatGPT](https://composio.dev/toolkits/coinbase_wallet_mcp/framework/chatgpt)
- [Claude Cowork](https://composio.dev/toolkits/coinbase_wallet_mcp/framework/claude-cowork)
- [Hermes](https://composio.dev/toolkits/coinbase_wallet_mcp/framework/hermes-agent)

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## Frequently Asked Questions

### What are the differences in Tool Router MCP and Coinbase Wallet MCP?

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.

### Can I use Tool Router MCP with Atomic Agent?

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.

### Can I manage the permissions and scopes for Coinbase Wallet while using Tool Router?

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.

### How safe is my data with Composio Tool Router?

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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