@vulinh1704/spend-guard

A spending guard for AI agents that pay for things: budgets, payee allowlists, price-spike checks and human approval before any payment leaves the wallet. Pays HTTP 402 (x402) paywalls in USDC on Circle's Arc and in NEAR.

Installation

MCP client config (paste into mcp.json)

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

Agent install prompt

Copy and paste into Cursor / Claude / other agents to install this MCP for you

Please read this MCP repository and install it into my current environment:
https://www.npmjs.com/package/@vulinh1704/spend-guard

Known working client config (can write into mcp.json):
{
  "mcpServers": {
    "npm-vulinh1704-spend-guard": {
      "command": "npx",
      "args": [
        "@vulinh1704/spend-guard"
      ]
    }
  }
}

Please: 1) check README for deps and env vars; 2) write config for my client; 3) if secrets are missing, tell me what to fill — do not invent values.

GitHub

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