Open a Stripe Checkout session for a subscription on the named plan; the browser is sent to url.

post/v1/billing/checkout

Request

  • The document declares no server URL.
  • Auth: one of:
    • HTTP bearer
    • API key in cookie __Secure-better-auth.session_token

Request body

plan'founder' | 'team' required

The two things for sale, ruled 2026-09-14: capacity is STORAGE, and everything countable — people, agents, mailboxes, addresses, domains — is unlimited on both. founder is $20 a month for 20 GB of mail; team is $200 for 200 GB. A dollar a gigabyte, in two sizes. Never a seat: a person's mailbox and an agent's cost the same, which is the product's whole premise.

Response

The request has succeeded.

urlstring uri required

Changes

No recorded changes to this operation across all 1 revision of this API.