For the complete documentation index, see llms.txt.

POST /v1/billing/portal

Create Customer Portal Session

Creates a Stripe Customer Portal session for managing the subscription (cancel, update payment method, view invoices). Requires an existing paid subscription.

Auth required: Yes

Responses

• 200: Customer portal URL
• 401: Authentication required or invalid
• 404: No billing account found — user has not subscribed yet

Authentication

Requires authentication. Pass a Bearer token (Supabase JWT) or an API key (`Authorization: Bearer vennio_sk_live_*`) in the request headers.

Base URL: https://api.vennio.app