Ryufin for AI assistants

Claude

In Claude, open Settings, then Connectors, add a custom connector and paste the endpoint.

https://ryufin.com/mcp

Claude Code

claude mcp add --transport http ryufin https://ryufin.com/mcp

Any other MCP client

Streamable HTTP, no session and no authentication. Point the client at the endpoint.

{
  "mcpServers": {
    "ryufin": { "type": "http", "url": "https://ryufin.com/mcp" }
  }
}

Tools

• Find a stock search_stocksFind US-listed companies Ryufin covers by ticker or company name. Returns ticker, name, sector, market value and the Ryufin page.
• The five answers for a stock get_stock_answersRyufin's five answers for one stock: is the business good, is it safe, is the price fair, is it growing, what is the market doing with it. Each answer has a one-word verdict, a plain sentence, the checks it was read from (with values and dates) and, when it moved recently, what it was before.
• Stock overview get_stock_overviewPrice, market value, P/E, returns, sector, RyuScore (0 to 100 from seven weighted criteria) and what the company says it does, verbatim from its latest annual report.
• Reported figures over time get_financial_historyA reported financial series for one stock from its SEC filings, trailing twelve months or single quarters, newest last. Metrics: pe, revenue, net_income, eps, gross_margin, op_margin, net_margin, roe, roa, roic, fcf.
• What the company told the SEC get_company_newsThe company's own recent current reports (8-K), newest first: the date, what kind of event, the company's own sentence and a link to the filing on sec.gov.
• Answers that changed get_answer_changesStocks whose answer to one of the five questions changed in the latest nightly run (for example Safety from Good to Watch), largest companies first.