Your agent can pay with a card or with crypto. One key. You set the limit.

Cursor or Claude can buy search, scrape, tickets, APIs. Same key, same limit, same receipt (card or x402/USDC).

npx -y @agentpayxyz/mcp-server

JS SDK (optional): npm install @agentpayxyz/sdk

1. Get a key

Launch is $0. 50 free calls. No card to start. The 201 body includes apk_. Default spend limit is $25 — raise it on the key.

curl -s -X POST https://api.agentpay.so/api/merchants/register \
  -H "Content-Type: application/json" \
  -d '{ "name": "My Agent", "email": "you@example.com", "spendLimitUsd": 25 }'

2. Paste into Cursor or Claude

{
  "mcpServers": {
    "agentpay": {
      "command": "npx",
      "args": ["-y", "@agentpayxyz/mcp-server"],
      "env": {
        "AGENTPAY_API_KEY": "apk_your_key_here",
        "AGENTPAY_MERCHANT_ID": "mer_your_merchant_id"
      }
    }
  }
}

Remote: https://api.agentpay.so/api/mcp with Authorization: Bearer apk_...

When you outgrow free, Builder is $39/mo plus 75 bps on funded actions. London and Bangalore. GDPR. Builder checkout is POST https://api.agentpay.so/api/billing/plans/builder when Stripe is configured.