Zernio is a unified social media API platform that lets developers and AI agents publish, schedule, and manage content across 14+ social networks through a single integration. Instead of building and maintaining separate integrations with each platform's API, developers make one API call and Zernio handles authentication, media formatting, rate limits, and platform-specific requirements. It supports platforms including Instagram Business & Creator APIs, TikTok Business API, LinkedIn, YouTube, Twitter/X, Facebook, Pinterest, Reddit, Threads, Bluesky, and WhatsApp Business API. The platform is designed for SaaS companies embedding social features into their products, agencies managing client accounts at scale, and AI agent builders who need programmatic social posting. Zernio is white-label, meaning end users never see Zernio branding. It also provides webhook notifications, automatic token refresh, developer-friendly SDKs, and comprehensive API documentation.