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

curl -X POST "https://extraction-api.nanonets.com/api/v1/extract/sync" \
  -H "Authorization: Bearer $DOCSTRANGE_API_KEY" \
  -F "[email protected]" \
  -F "output_format=markdown"

Response:

{
  "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

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

Save your API key:

export DOCSTRANGE_API_KEY="your_api_key_here"

2. OpenClaw Configuration (Optional)

Recommended: Use environment variables (most secure):

{
  skills: {
    entries: {
      "docstrange": {
        enabled: true,
        // API key loaded from environment variable DOCSTRANGE_API_KEY
      },
    },
  },
}

Alternative: Store in config file (use with caution):

{
  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

curl -X POST "https://extraction-api.nanonets.com/api/v1/extract/sync" \
  -H "Authorization: Bearer $DOCSTRANGE_API_KEY" \
  -F "[email protected]" \
  -F "output_format=markdown"

Access content: response["result"]["markdown"]["content"]

Extract JSON Fields

Simple field list:

curl -X POST "https://extraction-api.nanonets.com/api/v1/extract/sync" \
  -H "Authorization: Bearer $DOCSTRANGE_API_KEY" \
  -F "[email protected]" \
  -F "output_format=json" \
  -F 'json_options=["invoice_number", "date", "total_amount", "vendor"]' \
  -F "include_metadata=confidence_score"

With JSON schema:

curl -X POST "https://extraction-api.nanonets.com/api/v1/extract/sync" \
  -H "Authorization: Bearer $DOCSTRANGE_API_KEY" \
  -F "[email protected]" \
  -F "output_format=json" \
  -F 'json_options={"type": "object", "properties": {"invoice_number": {"type": "string"}, "total_amount": {"type": "number"}}}'