free-investment-mcp

A free, no-key MCP server for public investment research. It runs as a Cloudflare Worker and exposes a Streamable HTTP endpoint at /mcp.

Included research tools

Tool	Data source	What it does
get_stock_quote	Yahoo Finance	Retrieves the latest available US or Korean quote
get_sec_company_filings	U.S. SEC EDGAR	Finds a company's recent SEC filings by ticker or CIK
get_world_bank_indicator	World Bank Open Data	Returns recent macroeconomic observations by country and indicator
search_clinical_trials	ClinicalTrials.gov	Searches trial metadata by disease, drug, company, or research term

The service only accesses public sources and does not require API keys. Market data can be delayed or incomplete; use it for research and verify material facts before making investment decisions.

Deploy to Cloudflare

npm install
npm run check
npm run deploy

After deploying, your MCP URL is:

https://<your-worker-subdomain>/mcp

Use that address when adding a remote MCP connector.

Examples

• get_stock_quote: symbol = AAPL, market = us
• get_sec_company_filings: ticker = NVDA, limit = 10
• get_world_bank_indicator: country = KOR, indicator = NY.GDP.MKTP.CD
• search_clinical_trials: query = pancreatic cancer

Development notes

• The Worker uses the MCP TypeScript SDK's stateless Streamable HTTP transport.
• All requests are read-only. No brokerage, account, or trading actions are included.
• The SEC asks automated clients to identify themselves. This server identifies itself with this repository URL.