Changelog

v1 — current

• GET /markets — list active vertical markets.
• POST /create-company — provision a company with branding and an owner account.
• POST /sso — single-use sign-in links that log a member straight into their back office.
• x-auth-user accepts a member's pagename or your own external_id on SSO, Get, Update, Read plan, Set plan and Cancel plan; enroller_username accepts either on Create and Update member.
• Update member: clear_fields empties a saved phone number or title.
• Set plan: paid_through, renewals in place and failed-payment reporting; Read plan shows pending changes, scheduled cancellations, paid-through date and payment status.
• Set plan and Cancel plan: Idempotency-Key header for safe retries.

Additive changes (new fields, new endpoints) ship without a version bump. Breaking changes will ship as /v2 with an announced deprecation window.