March 2026 Changelog

Basis Theory has rebuilt its Portal on a modern Next.js foundation with a refreshed interface, top navigation, faster performance, and unchanged core functionality, creating a more consistent experience across its products while supporting future onboarding and observability improvements. Test tenants now operate on infrastructure isolated from production, requiring test API calls to use api.test.basistheory.com, updated allowlists where applicable, and v1-test webhook signature verification, while newer SDKs can simplify configuration through a test-environment parameter. The Elements v3 beta introduces a unified card input component, substantially faster interactivity, fewer network requests, smaller transfer sizes, and centralized design tokens that apply theming and dark-mode support across components. 3DS authentication sessions can now include custom backend metadata that is returned through later webhooks to improve transaction correlation, and the Python SDK’s transport-level retry logic has been corrected to handle transient network failures more reliably.

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