# How to connect Finviz to Claude

```json
{
  "title": "How to connect Finviz to Claude",
  "toolkit": "Finviz",
  "toolkit_slug": "finviz",
  "framework": "Claude Cowork",
  "framework_slug": "claude-cowork",
  "url": "https://composio.dev/toolkits/finviz/framework/claude-cowork",
  "markdown_url": "https://composio.dev/toolkits/finviz/framework/claude-cowork.md",
  "updated_at": "2026-09-12T05:34:23.487Z"
}
```

## Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.
This guide walks you through the easiest and most secure way to connect your Finviz account to Claude via Composio Connect, enabling it to list top gainers in the last week, create watchlist for tech growth stocks, set price alerts for selected tickers, and more such actions on your behalf without compromising your account security.
Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

## Also integrate Finviz with

- [ChatGPT Work](https://composio.dev/toolkits/finviz/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/finviz/framework/hermes-agent)

## Connect Finviz to Claude Cowork

### Connecting Finviz to Claude Web, Desktop, and Cowork
1. Open Customize
In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.
2. Add the Composio MCP server
Click Add custom connector and paste in the Composio MCP server URL:

```bash
https://connect.composio.dev/mcp
```

## 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.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `FINVIZ_GET_OPTIONS_CHAIN` | Get Options Chain | Return the options chain for one ticker, optionally restricted to an expiration date or strike price. Results use the export's dynamic columns and preserve all CSV values as strings. The response includes a bounded record prefix and the full export row count. A truncated response has no continuation page. Requests are paced only within one worker; external callers and multi-worker runners must serialize Finviz requests. |
| `FINVIZ_GET_PORTFOLIO` | Get Portfolio | Return an existing Finviz portfolio using a configured portfolio URL or portfolio ID. Explicit fields override values parsed from portfolio_url. The response preserves CSV values as strings and includes a bounded record prefix and the full export row count. A truncated response has no continuation page. Requests are paced only within one worker; external callers and multi-worker runners must serialize Finviz requests. |
| `FINVIZ_GET_STOCK_HISTORY` | Get Stock History | Return OHLCV price history for one ticker at a selected bar timeframe and history range. Finviz does not support every timeframe and range combination. CSV values, including prices and volume, are preserved as strings. The response includes a bounded record prefix and the full export row count. A truncated response has no continuation page. Requests are paced only within one worker; external callers and multi-worker runners must serialize Finviz requests. |
| `FINVIZ_LIST_CALENDAR` | List Calendar | Return economic events, company earnings, or company dividends for an inclusive date range. Select the calendar with calendar_type. Results preserve dynamic CSV columns and string values and include a bounded record prefix plus the matching row count. A truncated response has no continuation page. Requests are paced only within one worker; external callers and multi-worker runners must serialize Finviz requests. |
| `FINVIZ_LIST_GROUPS` | List Market Groups | Return aggregate Finviz market groups for a selected grouping and data view. Results use the export's dynamic columns and preserve all CSV values as strings. The response includes a bounded record prefix and the full export row count. A truncated response has no continuation page. Requests are paced only within one worker; external callers and multi-worker runners must serialize Finviz requests. |
| `FINVIZ_LIST_INSIDER_TRANSACTIONS` | List Insider Transactions | Return recent market-wide or ticker-specific insider transactions, filtered to all transactions, purchases, or sales. Results preserve numeric-looking values and SEC links exactly as strings. The response includes a bounded record prefix and the full export row count. A truncated response has no continuation page. Requests are paced only within one worker; external callers and multi-worker runners must serialize Finviz requests. |
| `FINVIZ_LIST_INVESTOR_HOLDINGS` | List Investor Holdings | Return a bounded prefix of one manager's or fund's complete unpaginated holdings export and report its full row count. Select the resource with investor_type and pass its Investor ID or combined slug. A truncated response has no continuation page. Requests are paced only within one worker; external callers and multi-worker runners must serialize Finviz requests. |
| `FINVIZ_LIST_INVESTORS` | List Investors | Return the institutional-manager or fund directory, optionally narrowed by name. Records preserve Investor ID for FINVIZ_LIST_INVESTOR_HOLDINGS. max_records returns a bounded prefix, and Finviz may cap the export itself, so the result is not guaranteed to be an exhaustive directory. A truncated response has no continuation page. Requests are paced only within one worker; external callers and multi-worker runners must serialize Finviz requests. |
| `FINVIZ_LIST_LATEST_FILINGS` | 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. Results preserve all CSV cells, including filing and document links, exactly as strings. The response includes a bounded record prefix and the full export row count. A truncated response has no continuation page. Requests are paced only within one worker; external callers and multi-worker runners must serialize Finviz requests. |
| `FINVIZ_LIST_NEWS` | List News | Return market, stock, ETF, or crypto news from Finviz. Stock and ETF feeds can optionally be restricted to one ticker; market and crypto feeds are market-wide. Results use the export's dynamic CSV header and preserve every cell as a string. The response includes a bounded record prefix and the full export row count. A truncated response has no continuation page. Requests are paced only within one worker; external callers and multi-worker runners must serialize Finviz requests. |
| `FINVIZ_SCREEN_STOCKS` | Screen Stocks | Return stocks from a configured Finviz screener URL or explicit screener controls. Explicit fields override values parsed from screener_url. Unknown filter codes may be silently ignored. The response preserves CSV values as strings and includes a bounded record prefix and the full export row count. A truncated response has no continuation page. Requests are paced only within one worker; external callers and multi-worker runners must serialize Finviz requests. |

## Supported Triggers

None listed.

## Troubleshooting

### 1. Why does Claude not use the Composio connector for Finviz?

The connector can show as connected, but Claude must use it in each Finviz conversation.
- Click + at the lower left of the chat, or type /.
- Hover Connectors.
- Turn on Composio.
- Ask Claude to connect to Finviz again.

### 2. Why does Claude show an MCP server error before Finviz connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Finviz.
- Check that the connector URL is https://connect.composio.dev/mcp.
- Connectors run from Anthropic's cloud, so your device network is usually not the problem.
- Add the connector again from Customize > Connectors, then ask Claude to connect Finviz.
- If it fails again, send the error and the ofid_ reference id to support@composio.dev.

### 3. Why does the Finviz authorization link not work?

The Composio connector is one server. Your Finviz account connects separately when Claude asks for it.
- If the browser does not open, or the link expires, ask Claude to retry the Finviz connection.
- Composio creates a fresh Finviz authorization link.
- Open that link in your browser and finish the Finviz sign-in.

### 4. Why do Finviz actions fail after they worked before?

The Finviz connection can expire or lose permission.
- Ask Claude to inspect the Finviz connection.
- If the connection is unhealthy, disconnect it when Claude prompts you.
- Reconnect the Finviz account and retry the action.
- If Claude shows a permission prompt, approve it before Claude changes data in Finviz.
- If the action still fails with a permission error, check that the connected account has that permission in Finviz itself.

### 5. How do I switch to a different Finviz account?

Claude can manage the Finviz connection for you.
- Ask Claude to disconnect or delete the current Finviz account.
- Ask Claude to connect Finviz again.
- Open the new Composio authorization link for Finviz.
- Sign in with the other Finviz account in the browser.
- After the account connects, ask Claude to retry the Finviz task.

### 6. Why is my Finviz connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Finviz connection works in Claude Web, Desktop, and Cowork.
- In Claude Desktop, open Customize > Connectors.
- Next to Composio, click ⋮ and click Clear cache.
- If Finviz tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
- On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Finviz.

## Creating MCP Server - Stand-alone vs Composio SDK

The Finviz MCP server connects Claude Web, Desktop, and Cowork to your Finviz account through Composio. Once connected, Claude can use the available Finviz tools and triggers to complete tasks on your behalf.

## Complete Code

None listed.

## How to build Finviz MCP Agent with another framework

- [ChatGPT Work](https://composio.dev/toolkits/finviz/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/finviz/framework/hermes-agent)

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## Frequently Asked Questions

### What are the differences in Tool Router MCP and Finviz MCP?

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.

### Can I use Tool Router MCP with Claude Cowork?

Yes, you can. Claude Cowork 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.

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

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.

### 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 Finviz data and credentials are handled as safely as possible.

---
[See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)