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What is MCP?

The Model Context Protocol (MCP) is an open standard that lets AI-powered IDEs and tools connect to external data sources. Sixtyfour provides two MCP servers:
ServerURLPurpose
Documentationhttps://docs.sixtyfour.ai/mcpSearch Sixtyfour docs from your IDE
Filter Searchhttps://mcp.sixtyfour.ai/mcp?api_key=YOUR_API_KEYRun both people and company filter searches via MCP tools

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Setup

Add both servers to your IDE’s MCP configuration file: 
{
  "mcpServers": {
    "sixtyfour-docs": {
      "url": "https://docs.sixtyfour.ai/mcp"
    },
    "sixtyfour-filter-search": {
      "url": "https://mcp.sixtyfour.ai/mcp?api_key=YOUR_API_KEY"
    }
  }
}
Replace YOUR_API_KEY with your Sixtyfour API key. The exact location of the MCP configuration file varies by IDE.

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Common IDE config paths

IDEConfig location
Cursor.cursor/mcp.json in your project root or ~/.cursor/mcp.json globally
VS Code (Copilot).vscode/mcp.json in your project root
Claude CodeSee CLI commands in each server section below
Windsurf~/.codeium/windsurf/mcp_config.json

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Documentation MCP

Gives your IDE’s AI assistant direct access to Sixtyfour docs, API references, code examples, and guides — without leaving your editor.
This command is scoped to the directory you run it from. To make the server available across all projects, add --scope user to each command.

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Claude Code

claude mcp add --transport http sixtyfour-docs "https://docs.sixtyfour.ai/mcp"

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Example usage

  • “How do I use the company-intelligence endpoint?”
  • “What parameters does find-email accept?”
  • “Show me an example of using webhooks with Sixtyfour”

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Filter Search MCP

Lets Claude Code or another MCP client drive the full filter search flow, discover fields, inspect top values, and run paginated searches — without calling the HTTP endpoints directly.
This MCP server supports both people and company search modes. Use the same server for both, and ask for people or company results in plain English.

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Claude Code

This command is scoped to the directory you run it from. To make the server available across all projects, add --scope user to each command.
claude mcp add --transport http sixtyfour-filter-search "https://mcp.sixtyfour.ai/mcp?api_key=YOUR_API_KEY"

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Example usage

  • “Use Sixtyfour filter search to find US companies with 100 to 5000 employees.”
  • “Use Sixtyfour filter search to find VPs of Engineering at Series B SaaS startups in New York.”
  • “Use Sixtyfour filter search to show the top values for industry for private Canadian companies.”
Ask Claude Code to return the generated simple_filters or filters payload if you want the underlying query as JSON.