We built Nyx to solve a problem we kept hitting while building agents: AI agents break in ways traditional software doesn't. Logic bugs, reasoning failures, edge cases that manual testing and static benchmarks never explore. Nyx is an autonomous testing harness that probes your AI agents to find failure modes before users do. It’s used to find logic bugs, instruction following failures, edge cases in agent behavior, and for red-team security testing (jailbreaks, prompt injection, tool hijacking) Technical approach: * Pure blackbox (no special access needed - test like your users inter
Thinking of building something like this?
Every launch here is a competitor to somebody's idea. If yours is close, check it against the market before you build: the Full Check names the rivals, the prices and the gaps.
More developer tool / api launches
All
ElevenLabs UI
Audio and agent components for Next.js built on shadcn/UI
What the Font
Identify and discover fonts from images.
Wispbit
Linter that enforces codebase standards with AI coding agents.
OnlyJPG
Private browser-based converter for any image format to JPG.
Scriber Pro
Offline AI transcription app for macOS with no cloud uploads.
Duck-UI
Browser-based SQL IDE for DuckDB running entirely in WebAssembly.
Checked ideas in SaaS & software
AI phone receptionist for small clinics in Canada Kill
A voice AI that answers calls, books appointments and sends reminders for small Canadian physio and dental clinics at C$149 a month.
Browser extension that summarises Terms of Service Kill
Free Chrome extension that turns any site's terms and privacy policy into five plain bullets, with a $4 a month pro plan.
AI bookkeeping assistant for freelance designers Kill
A $19/month app that links a designer's bank and invoicing tools, sorts expenses and prepares quarterly tax estimates.