Case study · 03
HandleScout
An AI-powered username availability checker that searches 15+ platforms at once, so founders can lock a consistent brand handle fast.
- Role
- Full-Stack Developer
- Scope
- Frontend · Backend · AI integration
- Platform
- Web
- Year
- 2025
Overview
Checks handle availability across 15+ platforms in under 3 seconds using concurrent API calls and Groq (Llama 3).
The Challenge
The Challenge
Checking whether a handle is free across a dozen-plus platforms means opening a dozen-plus tabs and doing it manually, one at a time, every time you're deciding on a brand name.
Approach
Approach
The whole product is one search box that fans out instead of queuing up. I designed the request pipeline around concurrency from the start, so waiting on the slowest platform's API doesn't hold up the rest of the results.
Design
Design
Results render as they arrive rather than all at once, so the tool feels fast even when a couple of platforms are slow to respond. A single input with immediate, incremental feedback.
Engineering
Engineering
Concurrent API calls across 15+ platforms complete in under 3 seconds, backed by Supabase for persistence and Upstash Redis for caching and rate-limit protection. Groq's Llama 3 handles fuzzy suggestions when a handle's taken.
Outcome
Outcome
Live with sub-3-second concurrent lookups across 15+ platforms and AI-suggested alternatives when a name is unavailable.