Claude Code

Claude Code supports MCP servers natively via the claude CLI. See the Claude Code MCP docs for full details.

Seashail is stdio-only. Claude Code launches seashail mcp as a local command over stdio.

Prerequisites

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

Setup

Add Seashail as an MCP server:

claude mcp add seashail -- seashail mcp

This registers an MCP server named seashail that launches the Seashail binary over stdio.

Testnet Mode

To connect to testnet instead of mainnet:

claude mcp add seashail-testnet -- seashail mcp --network testnet

You can have both seashail (mainnet) and seashail-testnet registered simultaneously and switch between them per session.

Verification

After setup, start a Claude Code session and ask it to check your balance:

What's my SOL balance?

Claude Code should invoke the get_balance tool via Seashail and return your wallet balance.

Troubleshooting

"seashail: command not found" If your Seashail install isn't on PATH, use the absolute path:

claude mcp add seashail -- /path/to/seashail mcp

MCP server doesn't respond Make sure the Seashail daemon isn't blocked by a firewall or permission issue. Run seashail mcp manually in a terminal to check for errors.

Remove and re-add

claude mcp remove seashail
claude mcp add seashail -- seashail mcp