Preview. The API is shared with design partners and may change before launch. Register interest for sandbox access.
Changelog
We announce every API change here. Breaking changes always come with a new dated version and advance notice to partners.
2026-10-01
Section titled “2026-10-01”First public preview of the Phew APIs, shared with design partners.
- Automatic product classification and eligibility on every offer.
- Drop-in SDK and iframe embed for showing the offer without building UI.
- Checkout API: offers, policies, claims, webhook endpoints and events.
- Partner API: merchants and settlement statements.
- Security levels: Standard (API keys), Enhanced (IP allowlist and RFC 9421 request signing) and Bank-grade
(OAuth 2.0 with
private_key_jwtor mTLS). - Shopify app and WooCommerce plugin in pilot.