gate402

Drop-in x402 checkout for merchants. You issue terms through us; buyers pay your wallet directly in USDC on Base or Solana. Ogena never touches buyer funds.

Endpoints

Method	Path	Price	Free tier
POST	`/api/gate402/v1/checkout/create`	$0.01	20/day per x-client-id
GET	`/api/gate402/v1/checkout/:id`	free	—
POST	`/api/gate402/v1/checkout/:id/verify`	free	—
POST	`/api/gate402/mcp`	per tool	same tiers

GET /api/gate402/v1/sandbox/simulate

Runs the canned sandbox transcript: every checkout step, no wallet.

Merchant flow

POST /api/gate402/v1/checkout/create
{"network":"solana","merchantPayTo":"<YOUR_ADDRESS>",
 "amountUsd":"9.99","memo":"order-1"}
# -> checkoutId, buyer terms, checkoutUrl, status: pending

# buyer pays YOUR address, then:
POST /api/gate402/v1/checkout/:id/verify
{"paymentSignature":"<base64 x402 PaymentPayload>"}
# -> {"status":"paid","transaction":"..."}  (or pending + reason)

Try it without a wallet: the demo storefront drives the live flow, and the sandbox transcript shows every step canned.

Interactive reference · gate402 openapi.json

Machine endpoints

Billing failures, unknown inputs and receipt checks: the errors page.