Start building
How Grain Works
Learn how Grain processes payments, from checkout to settlement.
Completing Onboarding
Prepare KYB verification, complete onboarding, and start accepting payments.
Integrate & manage
Payment SDK
Install, configure, and integrate the Grain Payment SDK into your application.
Grain Dashboard
Monitor transactions, track settlements, and manage your account settings.
API Reference
Explore endpoints, authentication, error codes, and rate limits.
Support & Resources
Get help, check system status, and browse the FAQ.