Problem: APIs work in Postman/Insomnia but break in production when users send real data - emojis in chat messages, oversized files, malformed JSON, edge cases.
Solution: Interactive testing interface simulating user behavior:
Quick Test Playground:
OpenAI, Anthropic, Stability AI, Google AI, Hugging Face
Paste API key → Click test → Results in 10s
text $ curl -H "Authorization: Bearer sk-..." https://api.openai.com/v1/chat/completions → 5 lines of code and headers
ApiRealTest: Select platform → Paste key → Click "Chat" Testing Modes:
Chat: Test conversational APIs (emojis, rapid messages)
Files: Upload images/docs (size limits, security)
JSON: Syntax-highlighted editor with validation
Forms: Key-value pair builder
Analytics: Response times, error rates, payload analysis.
Status: Beta - core features work reliably. UX polish in progress.
Pricing: Free (10 tests/day), $9/mo unlimited, $29/mo teams.
Tech: React + Tailwind + Supabase + Lovable.dev (~10 days to MVP).
Demo: https://api-real-test.lovable.app
Feedback welcome on usability, missing features, pricing.
What real user inputs broke your APIs in production?