How to Build a Multi-Platform Social Media Search Engine

If you're building a brand monitoring tool, a PR dashboard, or a creator discovery platform, you need to search across multiple social networks simultaneously. But every platform has a different API, different authentication methods, and different rate limits. Twitter requires expensive enterprise tiers. Instagram's official API doesn't allow broad keyword searches. TikTok's API is notoriously difficult to get approved for. In this tutorial, I'll show you how to bypass these headaches and build a unified, multi-platform search engine using Node.js and a single API provider. The Architecture We're going to build an Express.js API that takes a single search query (e.g., "Nike") and simultaneously searches: TikTok (Videos) Instagram (Posts) YouTube (Videos) Reddit (Posts) We'll use Promise.allSettled() to run these searches in parallel, aggregate the results, and return a unified JSON response. The Tooling To avoid integrating 4 different APIs, we'll use SociaVault . It's a unified social