How to integrate Finnhub MCP with Atomic Agent

Connect Atomic Agent to Finnhub MCP. Get latest price for aapl, list company financials for tsla, and more using natural language, with authentication handled for you.

Finnhub logoFinnhub
Api Key

Finnhub is a market data API delivering real-time quotes, company fundamentals, and financial news. Use it to power trading apps, research, alerts, and analytics with timely market intelligence.

11 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 Finnhub.

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

Also integrate Finnhub with

How Atomic Agent connects to Finnhub

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

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

Use Finnhub from Atomic Agent

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

Get Company Financial Metrics

Get Finnhub's current key ratios and annual or quarterly metric series for one company.

Get Company Profile

Look up a company profile by exactly one ticker, ISIN, or CUSIP.

Get Market Status

Check whether an exchange is open now and identify its current session, timezone, or holiday.

Get Quote

Get the latest price snapshot for one Finnhub symbol.

Get Quotes

Get price snapshots for 1-10 Finnhub symbols in one tool call.

Get Reported Financials

Retrieve as-reported balance-sheet, cash-flow, and income-statement data for a company or filing.

List Calendar Events

List earnings releases or IPO events in an ordered date range.

List Earnings Results

List a company's recent actual versus estimated earnings and surprise values.

List SEC Filings

List SEC filing metadata; a ticker, CIK, or accession number is required, optionally filtered by form and an ordered date range.

Search News

Get broad market news by category or company-specific news for an ordered date range.

Search Symbols

Find tradable symbols by ticker, company name, ISIN, or CUSIP, optionally restricted to an exchange.

FAQ

Frequently asked questions

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

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

Start with Finnhub.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Finnhub tool your agent needs.Free to start.

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