Ryufin

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Five plain answers on ~2,400 US stocks from SEC filings: quality, safety, valuation, growth, market.

Measured statistics

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "Ryufin": {
      "url": "https://ryufin.com/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (6)

• search_stocks read-only

  Find US-listed companies Ryufin covers by ticker or company name. Returns ticker, name, sector, market value and the Ryufin page.

  Parameters:

  • query (required) — string — Ticker or part of the company name
  • limit — integer

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• get_stock_answers read-only

  Ryufin'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.

  Parameters:

  • ticker (required) — string — US ticker symbol, e.g. NVDA or BRK-B

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• get_stock_overview read-only

  Price, 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.

  Parameters:

  • ticker (required) — string — US ticker symbol, e.g. NVDA or BRK-B

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• get_financial_history read-only

  A 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.

  Parameters:

  • ticker (required) — string — US ticker symbol, e.g. NVDA or BRK-B
  • metric (required) — string
  • view — string
  • periods — integer

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• get_company_news read-only

  The 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.

  Parameters:

  • ticker (required) — string — US ticker symbol, e.g. NVDA or BRK-B
  • limit — integer

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• get_answer_changes read-only

  Stocks whose answer to one of the five questions changed in the latest nightly run (for example Safety from Good to Watch), largest companies first.

  Parameters:

  • limit — integer

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

Publisher website

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.