Create Customer

Create a new business account (Customer) for the authenticated Entity.

Customer Onboarding Flow

This endpoint is Step 2 in the customer onboarding process:

1. Create TOS Link (POST /v1/customers/tos_links) - Generate a TOS signing URL
2. User Signs TOS - Redirect user to the URL to sign the agreement and obtain signed_agreement_id
3. Create Customer (this endpoint) - Submit business information with signed_agreement_id
4. KYB Review - Auto-approved in sandbox, manual review in production
5. Fiat Account Provisioning - Automatic after KYB approval

Post-Creation

After successful creation, the customer enters KYB review. Poll GET /v1/customers/{customer_id} or use webhooks to monitor status changes.