API Reference

REST start payment

REST equivalent of startBSCPayment, startPolygonPayment, startBasePayment, and startSOLPayment.

POSThttps://api.argonpay.app/payPOST /pay

Merchant REST wrapper that starts a pending payment on the selected network. Maps to:

`network`	GraphQL mutation
`bep20` / `bsc`	`startBSCPayment`
`polygon` / `matic`	`startPolygonPayment`
`base`	`startBasePayment`
`sol`	`startSOLPayment`

Debits 1 query from the transaction owner's API key when started.

Endpoint

POST https://api.argonpay.app/pay

Content-Type: application/json

Body

Name	Type	Required	Description
`txnid`	string	Yes	Pending transaction ID from `payment` / `POST /create-payment`
`network`	string	Yes	`bep20`, `bsc`, `polygon`, `matic`, `base`, or `sol`
`token`	string	No	`USDT` or `USDC` (EVM networks only; ignored for `sol`)

Example

curl -X POST https://api.argonpay.app/pay \
  -H 'Content-Type: application/json' \
  -d '{"txnid":"YOUR_TXNID","network":"bep20","token":"USDT"}'

{
  "txnid": "YOUR_TXNID",
  "network": "bep20",
  "token": "USDT"
}

Response

Same logical payload as the matching start*Payment GraphQL mutation (sanitized for REST). Expect transaction.wallet.address, status, and expiry fields.

Errors

Code	Meaning
400	Missing `txnid`/`network`, or unsupported network
500	Server error starting payment

GraphQL equivalents

REST start payment

curl --request POST \
  --url 'https://api.argonpay.app/pay' \
  --header 'Content-Type: application/json' \
  --data '{"txnid":"YOUR_TXNID","network":"bep20","token":"USDT"}'

{
  "data": {
    "POST /pay": {
      "code": 200,
      "message": "OK"
    }
  }
}

POST · https://api.argonpay.app/pay