Prompt Firewall Simulator

Simulate rules that block prompt injection

A prompt firewall inspects inputs to a model and blocks malicious ones, and testing the rules matters before relying on them. This simulator lets you test prompt firewall rules against injection attempts, so you can see what your defences catch and miss.

Why prompt injection needs defending

Prompt injection is the attack where crafted input makes a model ignore its instructions or reveal its prompt, and it is a genuine risk for any application built on a model. A prompt firewall aims to detect and block such input before it reaches the model. But rules that look sound can miss cleverly worded attacks or over-block legitimate input, so simulating them against injection attempts is how you tune the balance. This is defensive testing of your own protective rules, understanding attacks in order to block them.

Tune your defences

The tool runs entirely in your browser, so nothing you paste, prompts, outputs or documents, is uploaded, which matters when the input is sensitive AI data or your own content.

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