What makes this Yahoo Finance MCP server lightweight?

It focuses on core stock data retrieval functionality with a minimal dependency footprint, making it straightforward to set up and run.

What data sources does this server use?

It uses the yfinance Python library, which retrieves data from Yahoo Finance. No additional API keys or paid data subscriptions are required.

Is this suitable for production trading workflows?

It is best suited for research and data retrieval. For production trading, you would need to pair it with an execution-capable tool and verify data freshness meets your requirements.

Yahoo Finance MCP (onori)

Yahoo Finance MCP (onori) is a lightweight MCP server designed for stock price queries and financial data retrieval through Yahoo Finance. Built on the yfinance library, it provides a streamlined interface for agents to access equity data without heavy configuration or complex dependencies. The minimal design makes it a practical choice for users who need basic stock data access without additional overhead.

The server supports standard stock data operations including price quotes, historical price series, and fundamental financial data. Its focused scope means it does what it does simply and reliably — agents can request current prices, pull historical data for a given date range, or retrieve key financial metrics for analysis. The lightweight approach trades feature breadth for ease of setup and maintenance.

Setup requires Python and the yfinance library, with the server registered in the MCP client configuration. Because it uses Yahoo Finance data without requiring API keys, the barrier to entry is low. Users should be aware of Yahoo Finance’s informal rate limits and terms of service. The server is read-only, making it a safe addition to any agent workflow. For users who need more advanced capabilities like technical analysis or multi-asset coverage, it can be paired with other MCP servers in a multi-server configuration.