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Quickstart

Get your AI agent connected to Proxy in minutes.

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Prerequisites

  • A Proxy account with API key (lk_live_xxx)
  • An MCP-compatible client (Claude Desktop, Cursor, or mcp-remote)

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Claude Desktop

Add to your Claude Desktop config file:
Edit ~/Library/Application Support/Claude/claude_desktop_config.json:
{
  "mcpServers": {
    "proxy": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.useproxy.ai/api/mcp"],
      "env": {
        "LEDGER_API_KEY": "lk_live_your_api_key"
      }
    }
  }
}
Restart Claude Desktop. You should see “proxy” in the MCP servers list.

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Cursor

Add to your Cursor settings (.cursor/mcp.json): 
{
  "mcpServers": {
    "proxy": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.useproxy.ai/api/mcp"],
      "env": {
        "LEDGER_API_KEY": "lk_live_your_api_key"
      }
    }
  }
}

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Agent Token (Runtime)

For production agents, use an agent token instead of an API key: 
{
  "mcpServers": {
    "proxy": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.useproxy.ai/api/mcp"],
      "env": {
        "LEDGER_AGENT_TOKEN": "at_live_your_agent_token",
        "LEDGER_AGENT_ID": "agent_xxx"
      }
    }
  }
}
Agent tokens are scoped to a single agent and can only access agent tools (not admin tools).

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Test the Connection

Once connected, try these commands in your AI client: 
"Check if user user_xxx can spend"
→ Calls ledger_status

"Create a $50 card for buying office supplies"
→ Calls ledger_card with action: create

"What transactions did card_xxx have?"
→ Calls ledger_transactions

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Verify Tools Are Available

Ask your AI: 
"What Proxy tools do you have access to?"
You should see a list of available tools based on your credentials.

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Next Steps

Tools Reference

Learn each tool’s parameters

Examples

Common workflows