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Documentation

Welcome to GrailPay

Move money over ACH and screen the accounts behind it — two APIs, one platform.
Start with the Payments APIBrowse the API reference
Migrating to API v3v1 and v2 are deprecated April 1, 2027 and sunset October 1, 2027. Map your endpoints and webhook events to v3.
Payments APIOnboarding, transactions, payouts, refunds, bank accounts and webhooks.
Risk Intelligence APIAccount verification, account intelligence, transaction risk and guarantees.

Start here

Section titled “Start here”
AuthenticationBearer tokens, API keys, and the HTTPS requirement.
EnvironmentsSandbox and production base URLs, and how to move between them.
Onboard a personCreate the individual who will send or receive ACH transfers.
Create a transactionMove funds between a payer and a payee.

Reference and resources

Section titled “Reference and resources”
Payments API referenceEvery endpoint in the current version, with a request builder.
Risk API referenceAccount and transaction screening endpoints.
ChangelogWhat shipped, and what it means for your integration.
Platform statusLive availability for the GrailPay platform.

Maintained by EkLine