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skills/nutrient-document-processing/SKILL.md

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+---
+name: nutrient-document-processing
+description: Process, convert, OCR, extract, redact, sign, and fill documents using the Nutrient DWS API. Works with PDFs, DOCX, XLSX, PPTX, HTML, and images.
+---
+
+# Nutrient Document Processing
+
+Process documents with the [Nutrient DWS Processor API](https://www.nutrient.io/api/). Convert formats, extract text and tables, OCR scanned documents, redact PII, add watermarks, digitally sign, and fill PDF forms.
+
+## Setup
+
+Get a free API key at **[nutrient.io](https://dashboard.nutrient.io/sign_up/?product=processor)**
+
+```bash
+export NUTRIENT_API_KEY="pdf_live_..."
+```
+
+All requests go to `https://api.nutrient.io/build` as multipart POST with an `instructions` JSON field.
+
+## Operations
+
+### Convert Documents
+
+```bash
+# DOCX to PDF
+curl -X POST https://api.nutrient.io/build \
+  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
+  -F "document.docx=@document.docx" \
+  -F 'instructions={"parts":[{"file":"document.docx"}]}' \
+  -o output.pdf
+
+# PDF to DOCX
+curl -X POST https://api.nutrient.io/build \
+  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
+  -F "document.pdf=@document.pdf" \
+  -F 'instructions={"parts":[{"file":"document.pdf"}],"output":{"type":"docx"}}' \
+  -o output.docx
+
+# HTML to PDF
+curl -X POST https://api.nutrient.io/build \
+  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
+  -F "index.html=@index.html" \
+  -F 'instructions={"parts":[{"html":"index.html"}]}' \
+  -o output.pdf
+```
+
+Supported inputs: PDF, DOCX, XLSX, PPTX, DOC, XLS, PPT, PPS, PPSX, ODT, RTF, HTML, JPG, PNG, TIFF, HEIC, GIF, WebP, SVG, TGA, EPS.
+
+### Extract Text and Data
+
+```bash
+# Extract plain text
+curl -X POST https://api.nutrient.io/build \
+  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
+  -F "document.pdf=@document.pdf" \
+  -F 'instructions={"parts":[{"file":"document.pdf"}],"output":{"type":"text"}}' \
+  -o output.txt
+
+# Extract tables as Excel
+curl -X POST https://api.nutrient.io/build \
+  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
+  -F "document.pdf=@document.pdf" \
+  -F 'instructions={"parts":[{"file":"document.pdf"}],"output":{"type":"xlsx"}}' \
+  -o tables.xlsx
+```
+
+### OCR Scanned Documents
+
+```bash
+# OCR to searchable PDF (supports 100+ languages)
+curl -X POST https://api.nutrient.io/build \
+  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
+  -F "scanned.pdf=@scanned.pdf" \
+  -F 'instructions={"parts":[{"file":"scanned.pdf"}],"actions":[{"type":"ocr","language":"english"}]}' \
+  -o searchable.pdf
+```
+
+Languages: Supports 100+ languages via ISO 639-2 codes (e.g., `eng`, `deu`, `fra`, `spa`, `jpn`, `kor`, `chi_sim`, `chi_tra`, `ara`, `hin`, `rus`). Full language names like `english` or `german` also work. See the [complete OCR language table](https://www.nutrient.io/guides/document-engine/ocr/language-support/) for all supported codes.
+
+### Redact Sensitive Information
+
+```bash
+# Pattern-based (SSN, email)
+curl -X POST https://api.nutrient.io/build \
+  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
+  -F "document.pdf=@document.pdf" \
+  -F 'instructions={"parts":[{"file":"document.pdf"}],"actions":[{"type":"redaction","strategy":"preset","strategyOptions":{"preset":"social-security-number"}},{"type":"redaction","strategy":"preset","strategyOptions":{"preset":"email-address"}}]}' \
+  -o redacted.pdf
+
+# Regex-based
+curl -X POST https://api.nutrient.io/build \
+  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
+  -F "document.pdf=@document.pdf" \
+  -F 'instructions={"parts":[{"file":"document.pdf"}],"actions":[{"type":"redaction","strategy":"regex","strategyOptions":{"regex":"\\b[A-Z]{2}\\d{6}\\b"}}]}' \
+  -o redacted.pdf
+```
+
+Presets: `social-security-number`, `email-address`, `credit-card-number`, `international-phone-number`, `north-american-phone-number`, `date`, `time`, `url`, `ipv4`, `ipv6`, `mac-address`, `us-zip-code`, `vin`.
+
+### Add Watermarks
+
+```bash
+curl -X POST https://api.nutrient.io/build \
+  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
+  -F "document.pdf=@document.pdf" \
+  -F 'instructions={"parts":[{"file":"document.pdf"}],"actions":[{"type":"watermark","text":"CONFIDENTIAL","fontSize":72,"opacity":0.3,"rotation":-45}]}' \
+  -o watermarked.pdf
+```
+
+### Digital Signatures
+
+```bash
+# Self-signed CMS signature
+curl -X POST https://api.nutrient.io/build \
+  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
+  -F "document.pdf=@document.pdf" \
+  -F 'instructions={"parts":[{"file":"document.pdf"}],"actions":[{"type":"sign","signatureType":"cms"}]}' \
+  -o signed.pdf
+```
+
+### Fill PDF Forms
+
+```bash
+curl -X POST https://api.nutrient.io/build \
+  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
+  -F "form.pdf=@form.pdf" \
+  -F 'instructions={"parts":[{"file":"form.pdf"}],"actions":[{"type":"fillForm","formFields":{"name":"Jane Smith","email":"jane@example.com","date":"2026-02-06"}}]}' \
+  -o filled.pdf
+```
+
+## MCP Server (Alternative)
+
+For native tool integration, use the MCP server instead of curl:
+
+```json
+{
+  "mcpServers": {
+    "nutrient-dws": {
+      "command": "npx",
+      "args": ["-y", "@nutrient-sdk/dws-mcp-server"],
+      "env": {
+        "NUTRIENT_DWS_API_KEY": "YOUR_API_KEY",
+        "SANDBOX_PATH": "/path/to/working/directory"
+      }
+    }
+  }
+}
+```
+
+## When to Use
+
+- Converting documents between formats (PDF, DOCX, XLSX, PPTX, HTML, images)
+- Extracting text, tables, or key-value pairs from PDFs
+- OCR on scanned documents or images
+- Redacting PII before sharing documents
+- Adding watermarks to drafts or confidential documents
+- Digitally signing contracts or agreements
+- Filling PDF forms programmatically
+
+## Links
+
+- [API Playground](https://dashboard.nutrient.io/processor-api/playground/)
+- [Full API Docs](https://www.nutrient.io/guides/dws-processor/)
+- [Agent Skill Repo](https://github.com/PSPDFKit-labs/nutrient-agent-skill)
+- [npm MCP Server](https://www.npmjs.com/package/@nutrient-sdk/dws-mcp-server)