Seal MCP Server: Install & Setup

Install Seal in Claude Code

Claude Code

claude mcp add seal -- uvx seal-kernel

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "seal": {
      "command": "uvx",
      "args": [
        "seal-kernel"
      ]
    }
  }
}

Frequently asked questions

What does the Seal MCP server do?

Exactly-once payments for agents: prevents double settlement across processes and retries, confirms charges with the provider and reconciles out-of-band spend.

Is the Seal MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Seal run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Seal to Claude Code?

Run: claude mcp add seal -- uvx seal-kernel

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