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How to connect Finnhub with ChatGPT

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

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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

How to connect Finnhub MCP with ChatGPT

ChatGPT can take action across your apps and files, stay with a project for hours, and turn a goal into finished materials like sheets, slides, and docs, not just answers.

In this guide, I will explain the easiest and most secure way to connect your Finnhub account to ChatGPT via Composio Connect, so it can retrieve real-time quotes, fetch company financials, surface market news and indicators, and monitor securities info through natural language commands without ever putting your account credentials at risk.

Also integrate Finnhub with

Claude CoworkHermesAtomic Agent

Why use Composio over default connectors?

  • Apps with read and write access. Default connectors mostly can read your data. Composio's Finnhub integration lets ChatGPT take actions like creating drafts, sending updates, labeling records, and more.
  • 1,500+ SaaS toolkits out of the box. Composio gives you instant access to a vast catalog of pre-built connectors, from Gmail and Slack to Notion, Linear, and Salesforce.
  • One MCP server for every app. Connect any of your applications on demand through a single endpoint, rather than juggling a separate server for each app.
  • Smart, context-aware tool loading. Unlike traditional MCP servers that dump every available tool into the LLM context window, Composio searches for and loads only the tools relevant to the task at hand.
  • Cross-app automation. Chain actions across multiple apps in a single run - fetch a thread, summarize it in Notion, and post highlights to Slack without leaving the conversation.

Prerequisites

Note: Composio connects through OAuth. You will be asked to sign in and approve specific permissions. Review the permission screen carefully if you are using a work account.

Step-by-step: Connect Finnhub to ChatGPT

1. Install the Composio plugin

Click the button. ChatGPT opens the Composio plugin page. Click Install plugin.

Install in ChatGPT

Composio plugin page in ChatGPT with the Install plugin button

You can also find it inside ChatGPT: go to Settings, open Plugins, search the marketplace for Composio, and click Install plugin.

2. Authenticate

After you install, ChatGPT asks you to authenticate with Composio. Log in and click Allow access to authorize ChatGPT to use your Composio account.

Composio login and Allow access screen for ChatGPT

3. Start using Composio

That is it. Composio tools are now available in ChatGPT. Type @Composio followed by your request, for example @Composio find unread Finnhub messages and summarize them, and it will run the actions you authorize. On first use it asks you to authorize Finnhub.

Option 2: Add Composio as an MCP server

If you cannot use the plugin marketplace, add Composio as a custom MCP server instead.

1. Open the MCP settings

In ChatGPT, go to Settings and open the Plugins section. Inside the Plugins page, click the MCP tab.

ChatGPT settings showing the Plugins page with the MCP tab selected

2. Add the server

Click Add server. In the Name field enter Composio, for Type select Streamable HTTP, and in the URL field paste the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
ChatGPT Add server dialog with the name Composio, type Streamable HTTP, and the Composio MCP URL

Then click Save. The Composio server now appears in your MCP plugins list.

ChatGPT Plugins page showing the Composio MCP server added to the list

3. Authenticate

Click Authenticate on the Composio entry, log in via Composio, and click Allow access. Composio tools are then available in ChatGPT the same way as with the plugin.

What you can do after connecting Finnhub

  • Get latest price for AAPL
  • List company financials for TSLA
  • Summarize today's market-moving news headlines

Security + privacy notes (important)

  • Use least-privilege access: Only grant permissions you actually need.
  • Review OAuth permissions before approving: Make sure requested scopes match what you expect Composio and ChatGPT to do.
  • Keep write actions human-reviewed: For actions like sending messages, creating labels, or editing drafts, keep manual confirmation enabled.
  • Be careful with sensitive data: Avoid using this setup with highly sensitive information unless allowed by your personal, company, or client policies.
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.

FRAMEWORKS

How to build Finnhub MCP Agent with another framework

Claude Cowork logo

Claude Cowork

Use Finnhub MCP with Claude Cowork

Hermes logo

Hermes

Use Finnhub MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Finnhub MCP with Atomic Agent

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. ChatGPT 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.

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