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Sandbox API Key

Use this key for development and testing:
The sandbox returns sample data for all endpoints without consuming credits.

Usage

Sample Response

The sandbox returns realistic sample data:

What sandbox covers

Moving to Production

  1. Get an API key at app.casparser.in/developers
  2. Replace sandbox-with-json-responses with your real API key
  3. Test with a real CAS PDF to verify integration
The sandbox PDF password validation is disabled. In production, you must provide the correct password for each CAS type.

Rate Limits

Next steps

Quickstart

Build your first integration

API Reference

Explore all endpoints