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x402card Virtual Card Purchase
x402
x402card Virtual Card Purchase is a paid API for AI agents from api.x402card.org, paid per call via x402, $25/call, status unknown (last checked 2026-09-15).
Issues a new wallet-native virtual card by charging $25 USDC on Base via the x402 payment protocol, returning a queued card-issue job.
Price / call$25
Success—
StatusUnknown
How this service works
Issue and top up wallet-native virtual cards, or buy prepaid Freeland travel eSIMs with native USDC on Base through x402.
Output
Returns a JSON object confirming the card issuance job was queued, including the job ID, job status ('queued'), the product type ('virtual_card'), the owner's x402 payer address, and follow-up URLs for listing cards and authenticating the owner.
Example use cases
Crypto wallet to online spending card
“I want to create a virtual card funded by my USDC on Base so I can shop online — issue one for me and use idempotency key 'my-first-card-001' in case anything drops.”
Automating card issuance in an agent workflow
“In my automated expense workflow, provision a new virtual card for my team member using USDC — use idempotency key 'team-card-july-2025' so the payment won't double if we retry.”
Stablecoin-funded card for recurring online purchases
“Set up a fresh virtual card charged to my USDC wallet on Base for my monthly subscriptions — idempotency key 'sub-card-recurring-01' please.”
Technical details
Endpoint
POSThttps://api.x402card.org/api/card/purchaseWhen to prefer
Choose this endpoint when an agent or user wants to programmatically issue a crypto-funded virtual card using USDC on Base via the x402 payment protocol. It is ideal for DeFi-native workflows, crypto-first expense management, or any scenario where the user wants a spendable virtual card without traditional banking rails. Prefer it over fiat-based virtual card services when the payer holds USDC on Base and wants a wallet-native card with no traditional KYC onboarding friction.
Side effects
- Payment not received or insufficient USDC balance — 402 response requiring payment
- Duplicate idempotency key with conflicting request body — may return conflict error
- Network or x402 facilitator timeout — ambiguous response; caller should reuse the same idempotency key to retry
- Invalid or missing idempotency key — request rejected
- Card issuance job fails asynchronously — job status will reflect failure on polling
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| idempotencyKey | string | Stable caller-generated key. Reuse it after an ambiguous response; never generate a replacement to retry payment. |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"next": {
"listCards": "https://api.x402card.org/api/cards",
"authenticateOwner": "https://api.x402card.org/api/auth/challenge"
},
"owner": "<x402-payer-address>",
"status": "queued",
"product": "virtual_card",
"cardIssueJob": {
"id": "<job-id>",
"status": "queued"
}
}
}Tags
x402
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