/open

description: Open a PDF in the interactive viewer
argument-hint: "[path-or-url]"

> If you need to check which tools are connected, see [CONNECTORS.md](../CONNECTORS.md).

Open PDF

Display a PDF document in the live viewer. Use this when the user wants to **see** a document — not just extract its text.

Instructions

1. If the user provides a URL or file path, call `display_pdf` with it 2. If no path given, call `list_pdfs` first to show available documents 3. After displaying, offer next steps based on the document type:

• **Contract / report** → "Want me to highlight key sections or add

review notes?"

• **Form** → "This has fillable fields — shall I help you fill it?"
• **Academic paper** → "Shall I walk through and annotate the key

findings?"

Supported Sources

• Local files (paths or drag-and-drop into your working directory)
• arXiv (`arxiv.org/abs/...` auto-converts to PDF URL)
• Any direct HTTPS PDF URL (use the PDF link, not a landing page)

When NOT to use this

If the user just wants a summary or text extraction, **do not** open the viewer — use Claude's native Read tool on the PDF path instead. The viewer is for interactive, visual workflows.