Developers and integrations
Find and protect your API credentials
Use the Merchant Token for API requests and the Private Key to verify webhook signatures.
PayerOne help
Payments, checkout, integrations, and transactions.
Developers and integrations
Handle API errors and uncertain responses
Resolve validation and access errors without duplicating orders or refunds.
Developers and integrations
Track refunds and prevent duplicate requests
Read refund status, available amounts and provider reconciliation without creating another refund.
Developers and integrations
Verify your integration before accepting customers
Review requests, signed test events, confirmation and duplicate handling in the complete payment flow.
Express Wallet
Change an Express Wallet destination safely
Understand the customer-address impact before editing or removing an Express Wallet.
Express Wallet
Find Express Wallet customers and deposits
Match a customer ID, email, or receive address to the relevant payment records.
Express Wallet
Integrate Express Wallet on your website
Request customer wallet instructions and verify deposits with the merchant API.
Express Wallet
Set up Express Wallet
Configure the destination wallet and networks used for customer-specific Express Wallet addresses.
Orders and transactions
Find and filter orders
Locate a payment request by status, payment status, network, gateway, or search.
Orders and transactions
Read your dashboard activity
Use the activity chart, date selector, and recent payment lists.
Orders and transactions
Refund an order in the dashboard
Create a full or partial refund, review its history and refresh a pending provider result.
Orders and transactions
Search transaction history
Filter transaction records and match a transaction ID to its related order or Express Wallet customer.
Orders and transactions
Understand an order detail page
Read order amounts, customer details, payment records, and IPN delivery history.
Webhooks
Add and test a webhook endpoint
Receive payment events at your order IPN URL and manage additional endpoints in the dashboard.
Webhooks
Troubleshoot missing or rejected webhooks
Check endpoint reachability, signatures and acceptance before changing payment state.
Webhooks
Understand payment and refund webhook events
Route events using the root-level type and data fields and handle duplicates safely.
Webhooks
Verify PayerOne webhook signatures
Check the HMAC SHA-256 signature using the exact request bytes before processing an event.