Cursor

Cursor reads MCP server configuration from .cursor/mcp.json (project-level) or ~/.cursor/mcp.json (global).

Seashail is stdio-only. Configure Cursor to run a local command (seashail mcp), not a “server URL”.

Prerequisites

• Seashail installed and on your PATH
• A wallet created (seashail wallet create)
• Cursor installed

Setup (Recommended)

Use the one-click installer for project-level config:

seashail agent install cursor

This creates .cursor/mcp.json in your current workspace.

Manual Setup

Create .cursor/mcp.json in your project root (or ~/.cursor/mcp.json for global):

{
  "mcpServers": {
    "seashail": {
      "command": "seashail",
      "args": ["mcp"]
    }
  }
}

“No Install” Option (npx)

If you don’t want to install seashail onto your PATH, you can run via npx:

{
  "mcpServers": {
    "seashail": {
      "command": "npx",
      "args": ["-y", "@seashail/mcp", "--"]
    }
  }
}

Testnet Mode

seashail agent install cursor --network testnet

Or manually set args to ["mcp", "--network", "testnet"].

Verification

After setup, open a Cursor chat and ask:

What's my SOL balance?

Cursor should discover and use Seashail's MCP tools automatically.

Troubleshooting

MCP server not detected Make sure the config file is in the right location. For workspace-local config, it must be at .cursor/mcp.json relative to the project root you opened in Cursor.

Global vs. local Global config (~/.cursor/mcp.json) applies to all projects. Local config (.cursor/mcp.json in the project) overrides global for that workspace.