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Developers & API

Create API keys and pull Vantafin data over REST, WebSocket, and the MCP server for AI assistants.

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MCPHow to connect the Vantafin MCP serverConnect Vantafin's MCP server to Claude, Cursor, and other MCP clients so your AI assistant can pull live market data as tools.
WebSocketHow to stream real-time data over WebSocketSubscribe to live quotes, news, SEC filings, and trading halts over Vantafin's WebSocket API for real-time apps and alerting.
REST APIHow to query data with the Vantafin REST APIPull quotes, fundamentals, filings, corporate actions, ownership, and more from the Vantafin REST API with a single authenticated request.
API keysHow to create and use a Vantafin API keyGenerate a Vantafin API key in Settings and authenticate requests to the REST API, WebSocket, and MCP server. Includes examples.
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Vantafin provides market data and research tools for informational purposes only and does not constitute investment advice. Data may be delayed, incomplete, or incorrect. You are solely responsible for your investment decisions. See our Terms of Service.