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Cursor Parallax Protocol chain_info

How to: Cursor Parallax Protocol chain_info

client:Cursor transport:streamable-http tool:chain_info

Add Parallax Protocol to Cursor

  1. 01

    Open ~/.cursor/mcp.json and merge this in. Keep any servers already there.

{
  "mcpServers": {
    "parallax-mcp": {
      "url": "https://mcp.parallaxprotocol.org/mcp"
    }
  }
}
  1. 02

    Save the file and restart Cursor.

  2. 03

    Ask for something chain_info does. Cursor lists the server's tools on connect and calls chain_info itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that Parallax Protocol's identifier in your config matches the one above exactly.

Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs

Set these first

Parallax Protocol will not start until these are set, so chain_info never becomes available.

  • PARALLAX_MCP_RPC_URL
  • PARALLAX_MCP_GROUPS

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 13 October 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.