Build verified identity and consent into your product
Assure is the verification API behind interactive email, Apple Messages for Business, RCS, WhatsApp Business and passkey approval. Request a verification, read its single-use result and receive signed events — over plain HTTPS, with no vendor SDK.
Sandbox connectors, sends and events are simulations until real services are connected.
One verification API
Request a verification, follow its lifecycle and read the result once. Codes, magic links, phone consent, number-match approval and passkey approval all use the same request and result shape.
Signed events both ways
Provider callbacks arrive into Assure with signatures verified over raw bytes, and your own endpoints receive signed completion events. Announcements never carry the result — your backend consumes it.
No vendor SDK
Plain HTTPS with a workspace API key, an idempotency key on writes and the published specification you can generate clients from. Sandbox first, then production activation.