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UnyKorn Genesis402 Credit Purchase ($25 USDC)
x402
UnyKorn Genesis402 Credit Purchase ($25 USDC) is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $25/call, status unknown (last checked 2026-10-02).
Purchases $25 USDC worth of prepaid credits on the Genesis402 rail, returning a one-time credit token and balance URL for subsequent pay-per-call API usage.
Price / call$25
Success—
StatusUnknown
How this service works
Pay-per-call endpoints over x402 v2 and MPP (the "Payment" HTTP auth scheme, method usdc). Includes counterparty compliance checks: /report/counterparty (company + registered parents + UN/OFAC/EU/UK sanctions, signed and verifiable), /screen/name and /screen/entity. Free: /health, /.well-known/x402, /receipts, /prove/keys, /prove/stats.
Output
Returns a JSON object containing: ok (boolean), type ('credits'), the credit token (g402c_ prefixed, shown only once), a credit_id, the current balance in USD, a balance_url for checking future balance, and a receipt with tx_hash, amount_usd ($25), and receipt_id. The credit token must be stored immediately as it is not retrievable again.
Example use cases
Bootstrap agent with API credits
“My AI agent needs to start making compliance and sanctions checks on the Genesis402 rail — please buy the $25 USDC credit bundle so I have a token ready to use.”
Replenish depleted credit balance
“My Genesis402 credit balance is running low, can you top it up by purchasing another $25 USDC credit pack and give me the new credit token and balance URL?”
Onboard to x402 pay-per-call platform
“I want to try out the UnyKorn pay-per-call APIs like counterparty screening — first I need to buy $25 of credits with USDC, can you do that and save the token for me?”
Technical details
Endpoint
POSThttps://twin.unykorn.org/credits/25?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to pre-fund a Genesis402 credit balance before making pay-per-call requests to UnyKorn services (sanctions screening, counterparty compliance, geocoding, earthquake data, etc.). Prefer this over per-call payment if you plan to make multiple calls and want to avoid repeated x402 payment overhead. This is the entry point for the Genesis402 credit system — required before using any credit-gated endpoint on twin.unykorn.org.
Side effects
- Payment rejected due to insufficient USDC balance — returns payment error
- Invalid or missing x402/MPP payment header — 402 Payment Required response
- USDC transaction not confirmed on-chain — payment timeout or pending state
- Duplicate payment detected within short window — idempotency conflict
- Network/service unavailability — 503 or connection error
- Sanctions/compliance hold on paying address — payment blocked
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| params | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "credits",
"header": "X-Genesis402-Credit",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 25,
"receipt_id": "g402-<16hex>"
},
"credit_id": "cr_<12hex>",
"balance_url": "/credits/balance",
"balance_usd": "25.000000",
"credit_token": "g402c_<43 chars, shown once>"
}
}Tags
x402
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