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API terms

Version 2026-11-a · Effective 6 November 2026

Effective date: 6 November 2026

  1. The Paywio API is available to approved Sellers under the Seller Agreement and these API Terms.
  2. You must keep API keys secret, use test keys for testing and rotate keys if they may have been exposed. You are responsible for all activity under your keys.
  3. You may only create checkouts for your approved Products. You must not attempt to change prices, bypass checkout, access other Sellers' data or overload the service. Rate limits apply.
  4. You must verify the signature of every webhook before acting on it.
  5. We may change, limit or suspend the API, with notice for breaking changes where reasonably possible.
  6. The API is provided "as is". Our liability is as set out in the Seller Agreement.