Bellwether MCP vs Market Data

In-depth architectural comparison of the Bellwether MCP and Market Data MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Bellwether MCP when:

• You need dedicated capabilities in the Finance & Fintech domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Bellwether MCP Details

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Choose Market Data when:

• You need dedicated capabilities in the Finance & Fintech domain.
• You prefer remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Market Data Details

Feature & Specification Comparison

Specification	Bellwether MCP Finance & Fintech	M Market Data Finance & Fintech
Summary	Live prediction market data from Polymarket and Kalshi with VWAP pricing and reportability.	Live market data & technical analysis for US stocks, ETFs and crypto. Read-only, no signup.
Category & Scope	Finance & Fintech	Finance & Fintech
Quality signal

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "bellwether-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "bellwether-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "market-data-2": {
      "url": "https://marketcrew.ai"
    }
  }
}

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