View Pdf

1---2name: view-pdf3description: Interactive PDF viewer. Use when the user wants to open, show, or view a PDF and collaborate on it visually — annotate, highlight, stamp, fill form fields, place signature/initials, or review markup together. Not for summarization or text extraction (use native Read instead).4---5 6# PDF Viewer — Interactive Document Workflows7 8You have access to a local PDF server that renders documents in a live9viewer and lets you annotate, fill forms, and place signatures with10real-time visual feedback.11 12## When to use this skill13 14**Use the PDF viewer when the user wants interactivity:**15- "Show me this contract" / "Open this paper"16- "Highlight the key terms and let me review"17- "Help me fill out this form"18- "Sign this on page 3" / "Add my initials to each page"19- "Stamp this CONFIDENTIAL" / "Mark this as approved"20- "Walk me through this document and annotate the important parts"21 22**Do NOT use the viewer for pure ingestion:**23- "Summarize this PDF" → use the native Read tool directly24- "What does page 5 say?" → use Read25- "Extract the table from section 3" → use Read26 27The viewer's value is showing the user the document and collaborating28on markup — not streaming text back to you.29 30## Tools31 32### `list_pdfs`33List available local PDFs and allowed local directories. No arguments.34 35### `display_pdf`36Open a PDF in the interactive viewer. **Call once per document.**37- `url` — local file path or HTTPS URL38- `page` — initial page (optional, default 1)39- `elicit_form_inputs` — if `true`, prompts the user to fill form40  fields before displaying (use for interactive form-filling)41 42Returns a `viewUUID` — pass this to every `interact` call. Calling43`display_pdf` again creates a **separate** viewer; interact calls with44the new UUID won't reach the one the user is looking at.45 46Also returns `formFields` (name, type, page, bounding box) if the PDF47has fillable fields — use these coordinates for signature placement.48 49### `interact`50All follow-up actions after `display_pdf`. Pass `viewUUID` plus one or51more commands. **Batch multiple commands in one call** via the52`commands` array — they run sequentially. End batches with53`get_screenshot` to verify changes visually.54 55**Annotation actions:**56- `add_annotations` — add markup (see types below)57- `update_annotations` — modify existing (id + type required)58- `remove_annotations` — delete by id array59- `highlight_text` — auto-find text by query and highlight it60  (preferred over manual rects for text markup)61 62**Navigation actions:**63- `navigate` (page), `search` (query), `find` (query, silent),64  `search_navigate` (matchIndex), `zoom` (scale 0.5–3.0)65 66**Extraction actions:**67- `get_text` — extract text from page ranges (max 20 pages). Use for68  reading content to decide what to annotate, NOT for summarization.69- `get_screenshot` — capture a page as an image (verify your annotations)70 71**Form action:**72- `fill_form` — fill named fields: `fields: [{name, value}, ...]`73 74## Annotation Types75 76All annotations need `id` (unique string), `type`, `page` (1-indexed).77Coordinates are PDF points (1/72 inch), origin **top-left**, Y increases78downward. US Letter is 612×792pt.79 80| Type | Key properties | Use for |81|------|----------------|---------|82| `highlight` | `rects`, `color?`, `content?` | Mark important text |83| `underline` | `rects`, `color?` | Emphasize terms |84| `strikethrough` | `rects`, `color?` | Mark deletions |85| `note` | `x`, `y`, `content`, `color?` | Sticky-note comments |86| `freetext` | `x`, `y`, `content`, `fontSize?` | Visible text on page |87| `rectangle` | `x`, `y`, `width`, `height`, `color?`, `fillColor?` | Box regions |88| `circle` | `x`, `y`, `width`, `height`, `color?`, `fillColor?` | Circle regions |89| `line` | `x1`, `y1`, `x2`, `y2`, `color?` | Draw lines/arrows |90| `stamp` | `x`, `y`, `label`, `color?`, `rotation?` | APPROVED, DRAFT, CONFIDENTIAL, etc. |91| `image` | `imageUrl`, `x?`, `y?`, `width?`, `height?` | **Signatures, initials**, logos |92 93**Image annotations** accept a local file path or HTTPS URL (no data:94URIs). Dimensions auto-detected if omitted. Users can also drag & drop95images directly onto the viewer.96 97## Interactive Workflows98 99### Collaborative annotation (AI-driven)1001. `display_pdf` to open the document1012. `interact` → `get_text` on relevant page range to understand content1023. Propose a batch of annotations to the user (describe what you'll mark)1034. On approval, `interact` → `add_annotations` + `get_screenshot`1045. Show the user, ask for edits, iterate1056. When done, remind them they can download the annotated PDF from the106   viewer toolbar107 108### Form filling (visual, not programmatic)109Unlike headless form tools, this gives the user **live visual110feedback** and handles forms with cryptic/unnamed fields where the111label is printed on the page rather than in field metadata.112 1131. `display_pdf` — inspect returned `formFields` (name, type, page,114   bounding box)1152. If field names are cryptic (`Text1`, `Field_7`), `get_screenshot`116   the pages and match bounding boxes to visual labels1173. Ask the user for values using the **visual** labels, or infer from118   context1194. `interact` → `fill_form`, then `get_screenshot` to show the result1205. User confirms or edits directly in the viewer121 122For simple well-labeled forms, `display_pdf` with123`elicit_form_inputs: true` prompts the user upfront instead.124 125### Signing (visual, not certified)1261. Ask for the signature/initials image path1272. `display_pdf`, check `formFields` for signature-type fields or ask128   which page/position1293. `interact` → `add_annotations` with `type: "image"` at the target130   coordinates1314. `get_screenshot` to confirm placement132 133**Disclaimer:** This places a visual signature image. It is **not** a134certified or cryptographic digital signature.135 136## Supported Sources137 138- Local files (paths under client MCP roots)139- arXiv (`/abs/` URLs auto-convert to PDF)140- Any direct HTTPS PDF URL (bioRxiv, Zenodo, OSF, etc. — use the141  direct PDF link, not the landing page)142 143## Out of Scope144 145- **Summarization / text extraction** — use native Read instead146- **Certified digital signatures** — image stamping only147- **PDF creation** — this works on existing PDFs only