ZapSign Developer Docs

Build with the ZapSign API — programmatically generate, send, and track documents for electronic signature.

Integrate with ZapSign in minutes.

One API call. Documents ready for electronic signature, integrated into your workflow from start to finish.

Create, send, and track documents with security, status visibility, and legal validity — without relying on manual processes.

Get your API key API Overview

If you haven’t yet integrated with ZapSign, we recommend starting with the testing environment (sandbox) by clicking here to avoid charges.

API Implementation Essentials

REST API: Use GET and POST. Send and receive data in JSON.

Null Strings: Do not send null for string fields. Use "" or omit the field.

Booleans vs. Strings: Use real booleans. true and false are not the same as "true" and "false".

Time Management

• UTC+0 Time Zone: Our server stores dates and times in the UTC+0 time zone. Most frameworks and browsers automatically perform this conversion when dealing with datetime objects.

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For any questions, please contact our support team via WhatsApp or by email at [e-mail]. You can also speak with our specialists for customized solutions.