Paste your system prompt and a user message. Instantly scan for jailbreaks, prompt leaks, role-play attacks, encoding tricks, and 10+ injection categories. Everything runs in your browser.
A prompt injection attack is when a user crafts input that overrides or manipulates the system prompt of an AI application. The attacker's goal is to make the AI ignore its instructions, reveal its system prompt, bypass safety guardrails, or perform actions it was not designed to do. It is the most common vulnerability in LLM-powered applications.
This tool pattern-matches user input against 12 categories of known injection techniques: instruction override, role-play/persona attacks, prompt extraction, encoding tricks (base64, hex, ROT13), delimiter injection, context switching, social engineering, goal hijacking, multi-language attacks, markdown/HTML injection, token smuggling, and chain-of-thought manipulation. It also analyzes the system prompt itself for structural weaknesses.
No tool can catch every possible injection — adversaries continuously invent new techniques. This scanner covers the most common and well-documented attack patterns. It is a first line of defense, not a replacement for defense-in-depth strategies like output filtering, privilege separation, and human review of sensitive actions.
Yes. This tool runs entirely in your browser. Nothing you type or paste is uploaded, logged, or stored anywhere. Your system prompt never leaves your machine.
Based on the vulnerabilities detected, the tool recommends specific mitigations such as: adding explicit instruction boundaries, using XML/JSON delimiters around user input, adding anti-extraction directives, implementing output filtering, sandboxing tool calls, and applying the principle of least privilege to AI agent permissions.
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