How to integrate Coinbase Agents MCP with Atomic Agent

Connect Atomic Agent to Coinbase Agents MCP. List open orders in your portfolio, convert usd to btc at market price, and more using natural language, with authentication handled for you.

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Coinbase Agents MCP is Coinbase's managed toolkit exposing accounts, portfolios, orders, fills, and market data. Use it to let authorized agents inspect holdings, execute trades, perform transfers, and handle payments.

29 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 Agents.

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 Agents account. See the Atomic Agent documentation for installation instructions.

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How Atomic Agent connects to Coinbase Agents

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 Agents 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 Agents. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Coinbase Agents 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 Agents MCP server, and what's possible with it?

The Coinbase Agents 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 Agents account. It provides structured and secure access so your agent can perform Coinbase Agents operations on your behalf.

Use Coinbase Agents from Atomic Agent

With your account connected, ask Atomic Agent to work with Coinbase Agents 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 Agents MCP action and event your agent gets out of the box.

Coinbase balance

Returns account balances for exactly one portfolio.

Coinbase convert execute

Executes a previously quoted conversion using the quote_id from convert_quote.

Coinbase convert get

Check status of a conversion by quote ID.

Coinbase convert quote

Quotes stablecoin↔fiat and stablecoin↔stablecoin conversions, returning rate, fees, and a quote ID.

Coinbase fees

Fee tier, maker/taker rates, and 30-day volume.

Coinbase orders cancel

Cancels one or more open orders by ID.

Coinbase orders close position

Places a market order to flatten an open position for a product, moving funds immediately.

Coinbase orders create

Place a market, limit, stop_limit, bracket, twap, or scaled order, subject to venue eligibility.

Coinbase orders edit

Atomically update an open order's price or size without cancelling.

Coinbase orders edit preview

Estimate the result, fees, fill price, and slippage of changing an open order's size or limit price without editing it.

Coinbase orders fills

Lists individual trade executions with commissions and maker/taker indicator, filterable by product, order, side, and time range.

Coinbase orders get

Retrieves the full status and fill details of a single order by ID.

Coinbase orders list

Lists orders with optional filters by status, product, side, and time range.

Coinbase orders preview

Estimate fees, fill price, slippage, and execution plans without placing an order.

Coinbase portfolios create

Creates a new named portfolio for segregating funds and positions.

Coinbase portfolios delete

Permanently deletes a portfolio.

Coinbase portfolios edit

Renames an existing portfolio.

Coinbase portfolios get

Returns portfolio metadata, balances, and positions.

Coinbase portfolios list

Lists all portfolios on the account, including their UUIDs and types.

Coinbase products best bid ask

Returns best bid and ask for one or more products in a single call.

Coinbase products book

Returns the current bid/ask order book for a product.

Coinbase products candles

Returns historical OHLCV candles for a product at a chosen granularity and time range.

Coinbase products get

Viewing a product, including a FUTURE one, doesn't require any special account approval.

Coinbase products list

Viewing products, including FUTURE ones, doesn't require any special account approval.

Coinbase products ticker

Returns recent trade prints plus the current best bid/ask for a product.

Coinbase transfer

Moves funds of a single currency from one portfolio to another.

Coinbase x402 fetch

Fetches a resource returned by x402_resources.

Coinbase x402 pay

Turns an x402 PaymentRequirements challenge into a ready-to-send payment header by placing a pre-authorized hold on the caller's Base USDC balance (EIP-3009 exact scheme, v0).

Coinbase x402 resources

Discover curated x402 resources: paid on-chain and market metrics, wallet and entity intelligence, and derivatives data.

FAQ

Frequently asked questions

With a standalone Coinbase Agents MCP server, the agents and LLMs can only access a fixed set of Coinbase Agents tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Coinbase Agents 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 Agents tools.

Yes, absolutely. You can configure which Coinbase Agents 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 Agents data and credentials are handled as safely as possible.

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