Ryufin

com.ryufinPublished by ryufin.comOfficial publisherv1.0.1Updated Oct 27, 2026

Free US stock research from SEC filings: five plain answers on 3,000+ stocks. No API key.

VerifiedStreamable HTTPWeb executableFinanceData & Analytics

Overview

AI-generated overview

Ryufin gives an assistant free US stock research from SEC filings: five plain answers, overviews, financial history and 8-K news for 3,000+ stocks.

What you can do
  • Search covered US-listed companies by ticker or name, with sector, market value and page link
  • Read the five verdict answers for a stock (business quality, safety, price fairness, growth, market behavior) with the checks behind them
  • Get price, market value, P/E, returns, RyuScore and the company's own description from its annual report
  • Pull reported financial series from SEC filings, quarterly or trailing twelve months, across metrics such as revenue, margins, ROE, ROIC and free cash flow
  • List a company's recent 8-K current reports with event type, its own sentence and a link to the filing
  • See which stocks' answers changed in the latest nightly run, largest companies first
When to use it
Useful when you want quick, plain-language US equity research grounded in SEC filings without an API key, for screening companies, checking fundamentals or tracking answer changes overnight.
Requirements
Remote streamable HTTP endpoint at ryufin.com; no API key, environment variables or headers are declared. Network access is required.
Before you install
Answers and scores are Ryufin's own interpretations of filings and may be incomplete or lag the latest reports; treat them as research input, not investment advice. Coverage is limited to the US-listed companies Ryufin covers.

Installation

In SourceWeft

  1. Open Ryufin in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.ryufin%2Fstocks/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

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

Tools

6

search_stocks

Find a stock

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

Parameterslimitqueryrequired

get_stock_answers

The five answers for a stock

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.

Parameterstickerrequired

get_stock_overview

Stock overview

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.

Parameterstickerrequired

get_financial_history

Reported figures over time

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.

Parametersviewmetricrequiredtickerrequiredperiods

get_company_news

What the company told the SEC

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.

Parameterslimittickerrequired

get_answer_changes

Answers that changed

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.

Parameterslimit

Version history

2
  1. v1.0.1LatestOct 21, 2026
  2. v1.0.0Sep 27, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.