Marketcaper MCP

Marketcaper MCP gives AI agents fresh market data and something worth posting: cited cross-asset comparisons, asset snapshots, ready-to-publish comparison packs, and hosted stock heatmap images.

It is built for social-content agents, Telegram and Discord finance bots, newsletters, research assistants, and coding assistants that need current, source-linked finance context.

• Docs: https://marketcaper.com/mcp
• MCP endpoint: https://marketcaper.com/api/mcp
• Server card: https://marketcaper.com/.well-known/mcp/server-card.json
• Website: https://marketcaper.com

No API key is required for public read-only MCP access. Rate limits apply to protect the service.

What it is good for

• Create cited BTC vs ETH, NVDA vs AAPL, or USD vs BTC comparison posts.
• Generate Telegram or Discord finance bot replies with canonical Marketcaper source links.
• Build newsletter sections with comparison images and stock heatmap visuals.
• Let research assistants answer cross-market size questions without relying on stale model memory.
• Produce market recap cards with hosted PNG images.

What it is not for

Marketcaper MCP is not a trading system, investment adviser, portfolio monitor, backtesting engine, technical-analysis feed, news feed, or bulk extraction API. Do not use it to scrape all assets, power high-frequency workflows, automate trades, or monitor portfolios.

Tools

The public MCP server currently exposes:

• get_asset_snapshot - resolve one asset and return current size context with source links.
• compare_assets - compare two assets on one size scale.
• compare_assets_pack - generate a content-ready comparison pack with short copy, citations, canonical URLs, and optional hosted image metadata.
• get_stock_heatmap - return stock heatmap summaries and optional hosted heatmap image metadata.

See docs/tools.md for input and output guidance.

Quick setup

Use this endpoint in MCP-compatible clients:

https://marketcaper.com/api/mcp

Cursor or compatible mcp.json example:

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

Codex CLI example:

codex mcp add marketcaper --url https://marketcaper.com/api/mcp

See docs/clients.md for client examples.

Citation rule

When you use Marketcaper data in generated