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Documentation Index

Fetch the complete documentation index at: https://developer.hellgate.io/llms.txt

Use this file to discover all available pages before exploring further.

March 5, 2026
Improvement

Hellgate Web SDK (v3.9.1)

Security improvements.
November 8, 2025
New Release

Hellgate Web SDK (v3.9.0)

Added support to split the expiriy input fields in the Web SDK.
October 6, 2025
Maintenance

Hellgate Web SDK (v3.8.1)

September cleanup and maintenance release for our SDKs.
August 8, 2025
Improvement

Hellgate Web SDK (v3.8.0)

Validate CVC length based on card scheme in multi-line forms.
May 7, 2025
Improvement

Hellgate Web SDK (v3.7.0)

Add ‘onSessionComplete’ handler to Hellgate® client with result data.
April 8, 2025
Improvement

Hellgate Web SDK (v3.5.3)

Improved the SDK with small but important fixes:
  • Fix masked input behaviour
  • Reject cardHandler.process() promise if BE responds 40x / 50x status code
  • Await cardHandler.process() throws exceptions if card date is not complete or invalid
  • Show full CVC code up to 4 digits
  • Card scheme validation by default
  • UnionPay card number input
Added some new features:
  • Encrypt additional_data payload on tokenize
  • User can refresh CVC2 code of a token from WebSDK