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Boar blockchain MCP — Cursor Setup

Config file location

Create or edit .cursor/mcp.json in your project root.

Basic endpoint (recommended start)

{
  "mcpServers": {
    "boar-blockchain-mcp-basic": {
      "url": "https://mcp.boar.network/basic"
    }
  }
}

Both endpoints

{
  "mcpServers": {
    "boar-blockchain-mcp-basic": {
      "url": "https://mcp.boar.network/basic"
    },
    "boar-blockchain-mcp-advanced": {
      "url": "https://mcp.boar.network/advanced"
    }
  }
}

Cursor supports streamable-http natively — no transport type field needed.

Verify

  1. Open Cursor Settings > MCP and confirm the servers show a green status indicator.
  2. Open Composer (Cmd+I / Ctrl+I) and ask: "What is the ETH balance of vitalik.eth?"
  3. The agent should use the eth_get_balance tool from Boar blockchain MCP.

Troubleshooting

  • Server shows red/disconnected — Verify the JSON syntax in .cursor/mcp.json. Restart Cursor after editing.
  • Tools not available in Composer — MCP tools only work in Agent mode. Make sure you're using Composer with an agent-capable model.
  • Changes not picked up — Cursor may cache MCP config. Fully restart the application after editing .cursor/mcp.json.