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Use this checklist to ensure your integration handles all paths — not just the happy one. Each item uses the sandbox’s deterministic scenarios.
1

Approved payment (card)

Charge an amount ending in 00 with an approved card (...1111). Expect: transaction paid, webhook transaction.paid.
2

Declined payment (card)

Repeat with a decline card (...1002 = CARD_DECLINED). Expect: transaction refused, webhook transaction.refused, and your UI handling the error.
3

Retryable failure (card)

Use ...2001 (PROCESSING_ERROR). Expect: a failure that allows retry — validate your retry flow.
4

PIX that pays itself

Create a PIX with an amount ending in 07 (e.g., R$ 100,07). Expect: waiting_paymentpaid after the delay; webhook transaction.paid.
5

PIX/boleto that expires

Use an amount ending in 17. Expect: waiting_payment → expires/cancels; handle the expiration.
6

Pending state (manual)

Use an amount ending in 27 (or manual mode), then click Simulate Payment in the dashboard. Expect: full control over the waiting_paymentpaid transition whenever you choose.
7

Refund

Refund an approved payment via POST /transactions/{id}/refund. Expect: refund processed, refund webhook, transaction status updated.
8

Chargeback

On an approved card payment, open the dispute (amount ...31 or via dashboard) and force the outcome won/lost. Expect: transaction in chargeback, wallet debit, dispute defense flow.
9

End-to-end webhooks

Confirm your endpoint receives and validates the signature for each event above. See Webhooks.
Handled approval, decline, retry, PIX, expiration, refund, and chargeback? Your integration is ready for production. Swap the base URLs and API key and you’re good to go.