Redstone

About

Redstone provides end-of-day performance and risk analytics for about 2,900 US-listed stocks and about 1,200 US ETFs. It returns YTD, 1-year and 5-year annualized returns, max drawdown, volatility, Sharpe, Sortino, beta, alpha and dividend yield. You can compare securities, backtest weighted portfolios, screen by metric and browse public and model portfolios.

The hosted endpoint uses streamable HTTP and is read-only. No sign-in or API key is needed. Data is not real-time, and results are historical figures, not investment advice.

What you can do

• Get returns, drawdown, volatility, Sharpe and yield for a stock or ETF
• Compare 2 to 5 stocks or ETFs side by side with correlations
• Backtest weighted portfolios of 2 to 20 holdings against SPY
• Screen stocks and ETFs by performance, risk or yield, by sector or category
• Search public and model portfolios by risk and return filters
• Fetch holdings and metrics for one shared portfolio

Tools 6

• get_security_metricsRead-only

  Performance and risk metrics for one US stock or ETF, with a 1Y/5Y chart.

• compare_securitiesRead-only

  Compare 2 to 5 stocks or ETFs on returns, risk, yield and correlation.

• backtest_portfolioRead-only

  Backtest a weighted portfolio of 2 to 20 holdings, rebalanced quarterly, against SPY.

• screen_securitiesRead-only

  Rank stocks or ETFs by a performance, risk or yield metric, optionally by sector.

• search_portfoliosRead-only

  Find public user portfolios and model portfolios using figure filters.

• get_portfolioRead-only

  Holdings, returns and risk figures for one public Redstone portfolio.

Read from the live server on 15 Nov 2026. Read-only, Writes and Can delete are hints the server declares; your client decides whether to ask before running a tool.

Example prompts

• How risky has NVDA been over the past year?

• Compare VOO vs QQQ on returns, drawdown and Sharpe.

• Backtest a 60% VTI, 40% BND portfolio.

• Show the lowest volatility dividend ETFs.

Set up

Every client connects to redstonemarkets.com. Pick yours; the page remembers your choice.

claude mcp add --transport http redstone https://redstonemarkets.com/api/mcp

https://redstonemarkets.com/api/mcp

{
  "mcpServers": {
    "redstone": {
      "url": "https://redstonemarkets.com/api/mcp"
    }
  }
}

code --add-mcp '{"name":"redstone","type":"http","url":"https://redstonemarkets.com/api/mcp"}'

{
  "servers": {
    "redstone": {
      "type": "http",
      "url": "https://redstonemarkets.com/api/mcp"
    }
  }
}

{
  "mcpServers": {
    "redstone": {
      "serverUrl": "https://redstonemarkets.com/api/mcp"
    }
  }
}

codex mcp add redstone --url https://redstonemarkets.com/api/mcp

[mcp_servers.redstone]
url = "https://redstonemarkets.com/api/mcp"

gemini mcp add --transport http redstone https://redstonemarkets.com/api/mcp

{
  "mcpServers": {
    "redstone": {
      "type": "http",
      "url": "https://redstonemarkets.com/api/mcp"
    }
  }
}

Embed

Show Redstone in a README or on your site. Each embed links to this page, uses the server’s own URL, and sets no cookies. How embeds work

The card, the iframe and the JSON are in English. Add ?lang=it, fr, de or es to their address for another language.

README badge Website card iframe JSON AI prompt

README badge

Markdown

[![Redstone on mcp.tc](https://mcp.tc/i/redstone/badge.svg)](https://mcp.tc/i/redstone)

HTML

<a href="https://mcp.tc/i/redstone"><img src="https://mcp.tc/i/redstone/badge.svg" alt="Redstone on mcp.tc" height="20"></a>

It follows the reader’s light or dark mode. Add ?theme=light or ?theme=dark to fix it, or ?style=compact to show the mark without the word.

Website card

HTML

<script src="https://mcp.tc/w/redstone.js" async></script>

The card appears where the tag is. Add data-theme="dark" or data-size="compact" to the tag to change it. The file holds everything it needs, so it makes no other requests and sets no cookies.

iframe

HTML

<iframe src="https://mcp.tc/embed/redstone" title="Redstone on mcp.tc" width="420" height="200" loading="lazy" allow="clipboard-write" style="border:0;border-radius:8px;max-width:100%"></iframe>

Use it on pages that don’t allow scripts. Add ?theme=light or ?theme=dark to the address to fix the colors.

JSON

The listing as data for your own pages and tools: name, tagline, the server’s own URL, tools and the “Add to” links. Any site can read it (CORS is open).

https://mcp.tc/i/redstone.json

What each field means

AI prompt

Paste this into an AI coding assistant, such as Claude Code or Cursor, and it adds the Redstone card to your site.

Markdown

Add the mcp.tc card for Redstone, an MCP server, to my website. It is one static script: no build step, no package to install, no cookies.

Put this tag where the card should appear. The card renders right before it:

```html
<script src="https://mcp.tc/w/redstone.js" async></script>
```

To show the card somewhere else, put this placeholder there and load the same script once, for example before `</body>`. Keep the link inside: visitors without JavaScript see it.

```html
<div data-mcptc="redstone"><a href="https://mcp.tc/i/redstone">Redstone on mcp.tc</a></div>
```

Options:
- `data-theme="light"` or `"dark"` on the tag or the placeholder fixes the colors. Without it, the card follows the visitor’s light or dark mode.
- `data-size="compact"` gives a smaller card without the tagline.
- The CSS variable `--mcptc-max-width` on the placeholder or a parent sets the width (default `520px`).
- `?lang=` on the script URL sets the card’s language: `en`, `it`, `fr`, `de` or `es`.

If the site has a Content Security Policy, allow `script-src https://mcp.tc` and `img-src data:` (the icon is inline).

For a README or other Markdown docs, use the badge instead:

```markdown
[![Redstone on mcp.tc](https://mcp.tc/i/redstone/badge.svg)](https://mcp.tc/i/redstone)
```

Reference: https://mcp.tc/embed

Change history

We read this server’s tool list every 3 hours and record what changes. Last read 15 Nov 2026, 00:25 UTC.

1. 8 Nov 2026, 05:52 UTC, Automatic check

   Server instructions changed.

   New server instructions

   Details, 8 Nov 2026, 05:52 UTC

   Server instructions

   Before

   Redstone (redstonemarkets.com) has end-of-day (not real-time) analytics for about 2,900 US-listed stocks (the Russell 1000, the largest foreign companies and every other stock trading $5M+ a day) and about 1,200 US ETFs: YTD, 1-year and 5-year annualized returns, past-year risk (max drawdown, volatility, Sharpe, Sortino, beta and alpha vs SPY), dividend yield, correlations, backtests of hypothetical weighted portfolios, screening, and the public portfolios Redstone's users shared and its model portfolios. Returns are total returns in percent: split-adjusted, with dividends reinvested on the ex-date (dividends paid in currencies other than USD are left out). Present results as historical data, not investment advice or predictions. Link the Redstone page each result includes.

   After

   Redstone (redstonemarkets.com) has end-of-day (not real-time) analytics for about 2,900 US-listed stocks (the Russell 1000, the largest foreign companies and every other stock trading $5M+ a day) and about 1,200 US ETFs: YTD, 1-year and 5-year annualized returns, past-year risk (max drawdown, volatility, Sharpe, Sortino, beta and alpha vs SPY), dividend yield, correlations, backtests of hypothetical weighted portfolios, screening, and the public portfolios Redstone's users shared and its model portfolios. Returns are total returns in percent: split-adjusted, with dividends reinvested on the ex-date. Present results as historical data, not investment advice or predictions. Link the Redstone page each result includes.

2. 1 Nov 2026, 02:27 UTC, Automatic check

   Tracking started: 6 tools.

FAQ