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The MCP server exposes the full GroupDocs.Redaction engine: every format the .NET library can redact — 30+ document, spreadsheet, presentation, and image formats — is available to your AI agent. The canonical matrix lives in the library documentation: supported document formats.
What matters per family:
- PDF — the disclosure format. Text redaction, area redaction, annotations, and metadata all apply.
- DOCX / XLSX / PPTX — redact in the working format, including comments, which is where review notes hide.
- Images and scans — no text layer, so
redact_image_areawith coordinates is the tool. There is no OCR in this server: text inside a picture is pixels, not text.
The format decides which tools apply. On a born-digital PDF, redact_text does most of the work. On a scanned one, it will find nothing to match — an empty result there means “no text layer”, not “nothing sensitive”. That distinction is the single most important thing to get right before trusting a redaction, and it is why verification is a step rather than an option.
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