Checkout Guard — pre-purchase check for shops, payment links and paid APIs

Connect Remote server

claude mcp add --transport http checkout-guard https://angel.oroboros-design.com/mcp/checkout-guard

{
  "mcpServers": {
    "checkout-guard": {
      "url": "https://angel.oroboros-design.com/mcp/checkout-guard"
    }
  }
}

{
  "servers": {
    "checkout-guard": {
      "type": "http",
      "url": "https://angel.oroboros-design.com/mcp/checkout-guard"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://angel.oroboros-design.com/mcp/checkout-guard

Tools 2 found in our last check

• preflight

  Before an agent buys, pays or calls an unknown endpoint: one unpaid request to any https shop, checkout or payment link (Stripe, Shopify, PayPal and others), API or x402 endpoint. Checks TLS, domain age, look-alike domains, redirects to foreign gateways, the payment provider, ca…

• buy_pack_with_card

  For agents and people without USDC: prepaid packs paid in EUR by card or Link (100 calls €5.00 · 500 calls €25.00 · 5,000 calls €199.00) — including Link's wallet for agents (one-time card, approved by the human). Returns checkout_url; after payment the success page (Accept: app…

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