PulseKey

A tiny true-or-false tester for figuring out whether an old LLM API key still works.

Next.jsLLM APIsToolingInteraction Design2026

OpenAI

Keys are sent once to the selected provider for validation and are not stored by this demo.

Providers

Validation

live request

Focus

fast auth debugging

Why I made it

I have old API keys scattered across a bunch of `.env` files, and I usually have no idea which ones still work or whether they have usable credits left.

So I built this quick tool for myself: paste any LLM API key, pick the provider, and get a simple true-or-false answer on whether it works.