docstrange

---
name: docstrange
description: Document extraction API by Nanonets. Convert PDFs and images to markdown, JSON, or CSV with confidence scoring. Use when you need to OCR documents, extract invoice fields, parse receipts, or convert tables to structured data.
---

# DocStrange by Nanonets

Document extraction API — convert PDFs, images, and documents to markdown, JSON, or CSV with per-field confidence scoring.

> **Get your API key:** https://docstrange.nanonets.com/app

## Quick Start

```bash
curl -X POST "https://extraction-api.nanonets.com/api/v1/extract/sync" \
  -H "Authorization: Bearer $DOCSTRANGE_API_KEY" \
  -F "file=@document.pdf" \
  -F "output_format=markdown"
```

Response:
```json
{
  "success": true,
  "record_id": "550e8400-e29b-41d4-a716-446655440000",
  "status": "completed",
  "result": {
    "markdown": {
      "content": "# Invoice\n\n**Invoice Number:** INV-2024-001..."
    }
  }
}
```

## Setup

### 1. Get Your API Key

```bash
# Visit the dashboard
https://docstrange.nanonets.com/app
```

Save your API key:
```bash
export DOCSTRANGE_API_KEY="your_api_key_here"
```

### 2. OpenClaw Configuration (Optional)

**Recommended: Use environment variables** (most secure):
```json5
{
  skills: {
    entries: {
      "docstrange": {
        enabled: true,
        // API key loaded from environment variable DOCSTRANGE_API_KEY
      },
    },
  },
}
```

**Alternative: Store in config file** (use with caution):
```json5
{
  skills: {
    entries: {
      "docstrange": {
        enabled: true,
        env: {
          DOCSTRANGE_API_KEY: "your_api_key_here",
        },
      },
    },
  },
}
```

**Security Note:** If storing API keys in `~/.openclaw/openclaw.json`:
- Set file permissions: `chmod 600 ~/.openclaw/openclaw.json`
- Never commit this file to version control
- Prefer environment variables or your agent's secret store when possible
- Rotate keys regularly and limit API key permissions if supported

## Common Tasks

### Extract to Markdown

```b