Changelog

Changes to the API, events and docs.

#2026-10-16: v1

First public release. API version 2026-10-16.

• Tenants, API keys (live and test), platform app keys.
• Numbers: Embedded Signup, connect an existing WABA, hosted connect sessions, register, verify, two-step, business profile, migrate.
• Messages: Meta's /messages body plus from, idempotency keys, read receipts, batches of up to 10,000.
• Media upload, download and delete (never stored).
• Templates: create, edit, delete, sync, library, header media handles.
• Webhooks: signed deliveries, verify ping, secret rotation, retries for 24 hours, single and bulk replay.
• Event log with retention of 30, 90, 180 or 365 days.
• Billing: flat per-number fee.
• Errors carry source: whabuzz | meta.
• This documentation site, with Markdown twins and /llms.txt.

This page as Markdown: /changelog.md. All docs in one file: /llms-full.txt.