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Circle Agent Stack Mcp

io.github.kinance/circle-agent-stack-mcp ยท v0.1.1

Circle Agent Stack for AI agents: USDC wallets, spend policies, transfers, and x402 nanopayments.

Connect Runs on your machine

Terminal
claude mcp add circle-agent-stack-mcp -e CIRCLE_API_KEY=<CIRCLE_API_KEY> -- npx -y [email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "circle-agent-stack-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "CIRCLE_API_KEY": "<CIRCLE_API_KEY>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "circle-agent-stack-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "CIRCLE_API_KEY": "<CIRCLE_API_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "circle-agent-stack-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "CIRCLE_API_KEY": "<CIRCLE_API_KEY>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
CIRCLE_API_KEY
Required, secret
Your Circle API key from developers.circle.com

Details

Package[email protected] (NPM, stdio)
First published31 May 2026
Last updated31 May 2026
Registry nameio.github.kinance/circle-agent-stack-mcp

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