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September 20, 2026

  • Published the Plane Business documentation and OpenAPI reference.
  • Added step-by-step card issuance, top-up, card-control, and funding guides.
  • Documented webhook signing, deduplication, and delivery retries.
  • Added error handling, pagination, verification, and go-live guidance.
Live card and funding activation remains restricted. Documentation updates do not enable a capability or change your company’s approval state.

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API compatibility

The public path prefix is /api/v1. No automatic migration to a new major API version is implied. Pin your integration to the documented fields and handle additional response fields without failing. There is no published official SDK yet; the examples use HTTP directly.