Patronus Security

Spot hidden instructions and sensitive information in the content you ask AI to use. Patronus checks for prompt injection: instructions hidden in a document, webpage or other content that try to manipulate your AI assistant. It also flags sensitive data, such as personal information and credentials.

Use Patronus to:

• Check pasted text or an uploaded document before relying on it.
• Scan a public webpage for malicious instructions and sensitive information.
• Check selected Space or Page content that your assistant can access.
• Inspect the descriptions exposed by an MCP server, without running its tools.

Ask, for example: "Check this document for hidden instructions and sensitive data." Patronus reports findings and what was actually checked, so you can decide what to share or use. Supported documents include TXT, Markdown, HTML, PDF and DOCX.

Want automatic checks in desktop chats? The optional full Patronus desktop plugin adds checks of your prompts and text returned by tools in supported local chats. Open Patronus setup for the installation guide and guided CLI setup. Installing the web plugin alone does not turn on these automatic checks.

A Patronus account is required. The content you select is sent to the Patronus API, and scans use your account allowance. Only submitted content is checked. Space and Page access depends on the permissions available to your assistant; local files require file access or the optional CLI.