Integration Overview
The five phases of a HellOOpass integration, plus prerequisites.
From registration to live payments, every HellOOpass integration follows the same five phases.
Journey
1. Create a project
Create a project and collect your API credentials.
2. Register your businessSign up and register the legal entity that accepts payments.
3. Complete your profileSubmit business details and verification documents.
4. Settlement and webhooksRegister your bank account and HTTPS webhook endpoint.
5. Accept paymentsRetrieve, verify, and manage payments end to end.
Prerequisites
- A backend server that can store secret keys safely
- A public HTTPS webhook endpoint with valid TLS
- Environment variables or a secrets manager — never keys in git
- A unique order reference scheme for idempotency
- A settlement bank account in the registered business's name
See Authentication and Webhook Configuration.
Sandbox first
Complete all five phases in sandbox before requesting production activation.
Next: Quick Start Guide