Spend Guard MCP Server

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add spend-guard -- npx -y @vulinh1704/spend-guard

{
  "mcpServers": {
    "spend-guard": {
      "command": "npx",
      "args": [
        "-y",
        "@vulinh1704/spend-guard"
      ]
    }
  }
}

[mcp_servers.spend-guard]
command = "npx"
args = ["-y", "@vulinh1704/spend-guard"]

{
  "mcpServers": {
    "spend-guard": {
      "command": "npx",
      "args": [
        "-y",
        "@vulinh1704/spend-guard"
      ]
    }
  }
}

{
  "servers": {
    "spend-guard": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@vulinh1704/spend-guard"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: SPEND_GUARD_POLICY (Policy JSON file: networks, budgets, approval amount, spike ratio, known services and their payees. Without one, every payment waits for your approval), SPEND_GUARD_RAILS (How to pay: mock (pays nothing), near, arc, gateway, or a comma list. arc and gateway need ARC_PRIVATE_KEY, near needs NEAR_ACCOUNT_ID and NEAR_PRIVATE_KEY), SPEND_GUARD_LEDGER (Decisions file, read back on start so a restart keeps today's spend; servers on one file share one budget. Default ~/.spend-guard/ledger.jsonl; off keeps it in memory), SPEND_GUARD_DASHBOARD_PORT (Port of the approval dashboard on 127.0.0.1. 0 picks a free one; off means no dashboard, and payments that need approval are declined), SPEND_GUARD_APPROVAL_TIMEOUT (Seconds a payment waits for your answer before it is declined. Raise it together with your client's tool timeout), SPEND_GUARD_MOCK_NETWORK (Network the mock rail pretends to pay on), ARC_PRIVATE_KEY (Agent key for the arc and gateway rails. Testnet keys only), NEAR_ACCOUNT_ID (Agent account for the near rail (testnet)), NEAR_PRIVATE_KEY (Agent key for the near rail. Testnet keys only).