Redstone Markets

by redstonemarkets.com

Finance Added on November 12th, 2026 Checked and working on November 12th, 2026

What it does

Redstone Markets gives return and risk figures for about 2,900 US stocks and 1,200 US ETFs: total returns with dividends reinvested, max drawdown, volatility, Sharpe, Sortino, beta and dividend yield, for example to compare VOO and QQQ or backtest a 60/40 portfolio. It is a public, read-only MCP server (Streamable HTTP) at https://redstonemarkets.com/api/mcp with six tools that answer in JSON, built on end-of-day prices. Free, no key or account needed. The docs are in an MIT-licensed GitHub repository.

API
JSON
MCP

At a glance

API key: Not needed · More APIs with no key
Pricing: Free, no key or account needed.
From the browser: No, call it from a server
Formats: JSON
Interface: MCP
Provider: redstonemarkets.com
Last checked: Working on November 12th, 2026

More information: https://redstonemarkets.com/about#ai-assistants

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HTML

<a href="https://free-web-services.com/web-services/unit-convertors/fiinance/redstone-markets.html"><img src="https://free-web-services.com/badge.svg" width="208" height="44" alt="Listed on Free Web Services" /></a>

Markdown

[![Listed on Free Web Services](https://free-web-services.com/badge.svg)](https://free-web-services.com/web-services/unit-convertors/fiinance/redstone-markets.html)

Example request

curl

curl -X POST 'https://redstonemarkets.com/api/mcp' \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": {"name": "get_security_metrics", "arguments": {"ticker": "VOO"}}}'

JavaScript

const response = await fetch("https://redstonemarkets.com/api/mcp", {
  method: 'POST',
  headers: {
    "Content-Type": "application/json",
    "Accept": "application/json, text/event-stream",
  },
  body: JSON.stringify({"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"get_security_metrics","arguments":{"ticker":"VOO"}}}),
});
const data = await response.json();
console.log(data);

Python

import requests

response = requests.post(
    "https://redstonemarkets.com/api/mcp",
    headers={
        "Content-Type": "application/json",
        "Accept": "application/json, text/event-stream",
    },
    json={
        "jsonrpc": "2.0",
        "id": 1,
        "method": "tools/call",
        "params": {
            "name": "get_security_metrics",
            "arguments": {
                "ticker": "VOO",
            },
        },
    },
    timeout=30,
)
print(response.json())

Run the JavaScript on a server, such as Node.js 18 or newer: this API does not accept calls from web pages on other sites.