Chart Library MCP vs MCP Polygon)

In-depth architectural comparison of the Chart Library MCP and MCP Polygon) 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 Chart Library MCP when:

• You need dedicated capabilities in the Finance & Fintech domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (Freemium).
• You have access to required keys: CHART_LIBRARY_API_KEY.
• Primary tools included: 25M+ precomputed pattern embeddings across 19K+ stocks, 10 years of historical stock data, 19 tools including pattern search, forward returns, regime analysis, and trade simulation.

Explore Chart Library MCP Details

Choose MCP Polygon) when:

• You need dedicated capabilities in the Finance & Fintech domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (BYOK (Pay Provider Direct)).
• You have access to required keys: .

Feature & Specification Comparison

Specification	Chart Library MCP grahammccain Finance & Fintech	MCP Polygon) polygon-io Finance & Fintech
Summary	Historical stock chart pattern intelligence for AI agents. 24M pre-computed embeddings across 15K stocks and 10 years of data. Search by ticker+date or screenshot to find the most similar historical patterns and see what happened next. 19 tools including pattern search, forward returns, regime analysis, and trade simulation. Install: pip install chartlibrary-mcp. Free tier: 200 calls/day.	) 🐍 ☁️ - An MCP server that provides access to Polygon.io financial market data APIs for stocks, indices, forex, options, and more.
Category & Scope

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": {
    "grahammccain-chart-library-mcp": {
      "command": "uvx",
      "args": [
        "chartlibrary-mcp"
      ],
      "env": {
        "CHART_LIBRARY_API_KEY": "YOUR_CHART_LIBRARY_API_KEY_HERE"
      }
    }
  }
}

{
  "mcpServers": {
    "polygon-io-mcp-polygon-": {
      "command": "uvx",
      "args": [
        "--from"
      ],
      "env": {
        "MASSIVE_API_KEY": "YOUR_MASSIVE_API_KEY_HERE"
      }
    }
  }
}

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