# subtext-scan MCP server

> Detects hidden instructions in PDF, DOCX, and HTML files to prevent prompt injection attacks against AI agents.

- Repository: https://github.com/shmindmaster/subtext-scan
- Page: https://hostedmcp.org/servers/shmindmaster/subtext-scan
- Transport: —
- Stars: 0
- License: Apache-2.0

## FAQ

### Does subtext-scan require an internet connection or API key?

No, it runs locally, makes no network calls, and needs no API key.

### What file formats are supported for scanning?

The tool can read and scan PDF, DOCX, HTML, and plain text files.

### Can it detect instructions hidden in images?

No, it does not use OCR and cannot detect instructions rendered as vector outlines or inside images.