payment.processing | WalletConnect Docs

The buyer committed to a payment option and the payment started processing. Payload reference and example for the payment.processing webhook event.

processing is populated from this point on.

In this example the buyer pays 10 USDC on Base for a $10.00 payment, a 2.9% fee applies, and the merchant is expected to receive 9.71 USDC. processing.buyer_caip10 is null instead when the payment has no on-chain buyer, and live is false for test-mode payments.

`data.status`	Stage objects populated	Stage objects always `null`
`processing`	`processing`	`success`, `failed`, `cancelled`, `expired`, `settled`

Every field is documented in the event overview.

{
  "id": "evt_fixture_payment_processing",
  "type": "payment.processing",
  "api_version": "2026-05-18",
  "created_at": "2026-06-30T09:59:10.512Z",
  "data": {
    "payment_id": "pay_fixture_01HZX4V9K3T",
    "merchant_id": "merchant_fixture_01HZX4V9K3T",
    "live": true,
    "payment_state_version": 1,
    "reference_id": "order_fixture_1042",
    "status": "processing",
    "amount": {
      "unit": "iso4217/USD",
      "value": "1000"
    },
    "created_at": "2026-06-30T09:59:00.084Z",
    "expires_at": "2026-06-30T10:14:00.000Z",
    "processing": {
      "processing_at": "2026-06-30T09:59:10.512Z",
      "option_amount": {
        "unit": "caip19/eip155:8453/erc20:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "value": "10000000"
      },
      "fee": {
        "kind": "base_plus_percent",
        "base_amount": {
          "unit": "caip19/eip155:8453/erc20:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
          "value": "0"
        },
        "percent": {
          "numerator": "29",
          "denominator": "1000"
        },
        "percent_amount": {
          "unit": "caip19/eip155:8453/erc20:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
          "value": "290000"
        },
        "total_amount": {
          "unit": "caip19/eip155:8453/erc20:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
          "value": "290000"
        }
      },
      "settlement_amount": {
        "unit": "caip19/eip155:8453/erc20:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "value": "9710000"
      },
      "buyer_caip10": "eip155:8453:0x000000000000000000000000000000000000dEaD",
      "chain_caip2": "eip155:8453"
    },
    "success": null,
    "failed": null,
    "cancelled": null,
    "expired": null,
    "settled": null
  }
}