Build a Creator Discovery Engine with Node.js and SociaVault

Your client sells vegan protein powder. They need 50 micro-influencers in the fitness + vegan niche. Budget: $10K. You open Instagram. Search "vegan fitness." Scroll through profiles one by one. Copy-paste usernames into a spreadsheet. Check engagement manually. Repeat 200 times. That's 8 hours of your life you're not getting back. I built a tool that finds, filters, and ranks creators by niche in minutes. It searches across platforms, scores relevance, and spits out a ranked list. Here's the entire thing. The Stack Node.js – runtime SociaVault API – search creators, fetch profiles, get post data Natural language matching – keyword relevance scoring The Architecture Search Query ("vegan fitness micro-influencer") ↓ Platform Search (TikTok, Instagram, YouTube) ↓ Fetch Full Profiles ↓ Filter (followers, engagement, niche) ↓ Rank by Relevance Score ↓ Output: Ranked Creator List Step 1: Set Up the API Client const axios = require ( ' axios ' ); const API_BASE = ' https://api.sociavault.com