How to integrate Finviz MCP with Atomic Agent

Connect Atomic Agent to Finviz MCP. List top gainers in the last week, create watchlist for tech growth stocks, and more using natural language, with authentication handled for you.

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Api Key

Finviz is a market screening and research service with an official API for ELITE subscribers. It helps traders and analysts quickly screen stocks, track market movers, and research tickers.

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 Finviz.

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

Also integrate Finviz with

How Atomic Agent connects to Finviz

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

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

Use Finviz from Atomic Agent

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

Get Options Chain

Return the options chain for one ticker, optionally restricted to an expiration date or strike price.

Get Portfolio

Return an existing Finviz portfolio using a configured portfolio URL or portfolio ID.

Get Stock History

Return OHLCV price history for one ticker at a selected bar timeframe and history range.

List Calendar

Return economic events, company earnings, or company dividends for an inclusive date range.

List Market Groups

Return aggregate Finviz market groups for a selected grouping and data view.

List Insider Transactions

Return recent market-wide or ticker-specific insider transactions, filtered to all transactions, purchases, or sales.

List Investor Holdings

Return a bounded prefix of one manager's or fund's complete unpaginated holdings export and report its full row count.

List Investors

Return the institutional-manager or fund directory, optionally narrowed by name.

List Latest Filings

Return the latest SEC filings for one ticker, optionally filtered by filing category and ordered by filing date, report date, or form.

List News

Return market, stock, ETF, or crypto news from Finviz.

Screen Stocks

Return stocks from a configured Finviz screener URL or explicit screener controls.

FAQ

Frequently asked questions

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

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

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