What is the key difference between MCP Polygon) and Bolsai MCP?

MCP Polygon) belongs to the Finance & Fintech category with local stdio execution, while Bolsai MCP belongs to the Finance & Fintech category with local stdio execution.

How do I install MCP Polygon) or Bolsai MCP in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are MCP Polygon) and Bolsai MCP free or paid?

MCP Polygon) operates under a BYOK (Pay Provider Direct) model (API Key required). Bolsai MCP operates under a Freemium model (API Key required).

Which MCP server has more tools and community activity?

MCP Polygon) lists 3 tools with 3 views and 389 GitHub stars. Bolsai MCP lists 10 tools with 2 views and 1 GitHub stars.

Can I use both MCP Polygon) and Bolsai MCP together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

MCP Polygon) vs Bolsai MCP

In-depth architectural comparison of the MCP Polygon) and Bolsai MCP 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.

At a Glance & Executive Verdict

MCP Polygon)

Finance & Fintech · Local stdio

Quality: 51/100 (Good) | Auth: API Key required

Bolsai MCP

Finance & Fintech · Local stdio

Quality: 55/100 (Good) | Auth: API Key required

Verdict Summary: Choose MCP Polygon) if you need specialized Finance & Fintech tools running via a local process. Choose Bolsai MCP if your workspace requires Finance & Fintech integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

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: MASSIVE_API_KEY.
Primary tools included: search_endpoints, call_api, query_data.

Explore MCP Polygon) Details

Choose Bolsai 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: BOLSAI_API_KEY.
Primary tools included: get_stock_quote, get_fundamentals, compare_stocks.

Feature & Specification Comparison

Specification	MCP Polygon) polygon-io Finance & Fintech	Bolsai MCP viniciuslazzari Finance & Fintech
Summary	) 🐍 ☁️ - An MCP server that provides access to Polygon.io financial market data APIs for stocks, indices, forex, options, and more.	Brazilian stock market data (B3, CVM, BCB) for AI assistants — stock prices, 27+ fundamentals, dividends, FIIs, and macro indicators (Selic, IPCA, CDI). Install: pip install bolsai-mcp or uvx bolsai-mcp.
Category & Scope

Tools & Capabilities Breakdown

MCP Polygon) Tools (3)

search_endpoints

Search for API endpoints and built-in functions by natural language query. Returns titles, path patterns, and descriptions. Set `detail` to `"more"` for query parameter docs, or `"verbose"` for full documentation. Use `max_results` to limit results.

call_api

Call any Massive.com REST API endpoint. Supports storing results as an in-memory database table (`store_as`) and applying post-processing functions (`apply`). Paginated responses include a next-page hint.

query_data

Run SQL against stored SQLite DB. Supports `SHOW TABLES`, `DESCRIBE <table>`, `DROP TABLE <table>`, CTEs, window functions, and more. Results can also be post-processed with `apply`.

Bolsai MCP Tools (10)

get_stock_quote

Current price, daily change, 52w range

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).

MCP Polygon) Configuration

mcpServers (Claude Desktop / Cursor)

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

Bolsai MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "viniciuslazzari-bolsai-mcp": {
      "command": "uvx",
      "args": [
        "bolsai-mcp"
      ],
      "env": {
        "BOLSAI_API_KEY": "YOUR_BOLSAI_API_KEY_HERE"
      }
    }
  }
}

Frequently Asked Questions

MCP Polygon) is categorized under Finance & Fintech and uses a local stdio subprocess. In contrast, Bolsai MCP belongs to Finance & Fintech using local stdio subprocess. Select MCP Polygon) when you need capabilities focused on finance & fintech and Bolsai MCP when you require tools for finance & fintech.

More alternatives to MCP Polygon)More alternatives to Bolsai MCP Finance & Fintech category hub