Double Fifth
Double Fifth is an a16z speedrun SR004 company. Based in New York City, New York, United States of America. Team of 2, founded in 2024.
About Double Fifth
Summary
Double Fifth builds a unified API that gives developers structured access to users' personal data held across third-party platforms, such as watch history, order history, and ride data. It handles the scraping, connector maintenance, and schema normalization that would otherwise fall to each development team. The API targets use cases like onboarding flows and personalization engines that depend on real behavioral history rather than self-reported inputs.
Go-to-market
Developers and product teams adopt the API to replace the bespoke scraping and data-wrangling work they would otherwise build and maintain in-house, with users granting explicit permission for each data source tapped.
Facts
- Dev Tools & DevOps / AI Infra
- New York City, New York, United States of America
- 2
- 2024
Founders (1)
- Johnny Zeng
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