OneLink API 2.0: The new deep linking infrastructure built for growth and scale

Summary

AppsFlyer’s OneLink API 2.0 addresses a critical gap: as multi-channel, programmatic growth accelerates, manual deep linking can't scale. In 2025, owned-media conversions grew 67% and web-to-app journeys surged 250%, driving demand for automated link creation. OneLink API 2.0 adds programmatic QR generation (turning offline/CTV touchpoints into measurable app entry points), customizable time-to-live controls (from single-use to permanent), and an upgraded developer experience with higher rate limits and better monitoring.

These features unlock three high-impact use cases. First, QR everywhere: Albertsons used OneLink to drive 1.2M QR app visitors in two months, a 113% increase in marketing-driven app traffic. Second, personalized CRM and lifecycle journeys: Apartment List saw 2x Day 0 logins and 30% higher LTV by optimizing deep links for onboarding.

Third, secure authentication: short-lived, per-session links enable safe KYC/login without exposing identifiers. For ad ops teams, the takeaway is clear: treat deep linking as infrastructure, not a campaign tactic. Scalable, governed link creation improves conversion rates, attribution accuracy, and user LTV across paid, owned, and offline channels.

As AI agents and programmatic workflows proliferate, a modern API layer becomes essential to remain competitive.

Analyst Note

The article signals a critical shift: deep linking is no longer a campaign-level tactic but a cross-channel infrastructure requirement. With owned-media conversions up 67% and web-to-app journeys over 250%, the manual approach to link creation is breaking under scale. What’s notable here is the programmatic QR generation—this bridges offline and online measurement in a way that’s been missing for CTV, print, and retail touchpoints.

For ad ops teams, the custom TTL controls address a growing need for secure, time-bound links in authentication and KYC flows, moving beyond simple attribution. The competitive angle is clear: AppsFlyer is positioning its API as an end-to-end system, not just a linking tool, challenging more fragmented solutions. The key implication for UA professionals is that owned media and lifecycle engagement now demand the same rigor as paid campaigns—governance, automation, and unified measurement.

Worth watching is how this API-level approach standardizes deep linking across teams, especially as AI agents and programmatic workflows become more common. This isn’t about links anymore; it’s about a programmable layer that controls the user’s journey from any entry point.