Changelog and versions

The merchant API has no version prefix and no version header. The current contract is unversioned. Clients should ignore new JSON fields. A removed or renamed field will be listed here before it is treated as a breaking change.

Current contract

• POST /api/card/collect starts a hosted card checkout and returns checkoutUrl.
• Bank transfers accept UGX 2,500 through 50,000,000. Fees follow the organization push-to-bank policy.
• Collection and payout minimum is UGX 500.
• Callbacks are unsigned single POSTs unless the organization enables signed delivery. Bank transfers have no callback fields.
• Status values exposed to API clients are SUCCEEDED, FAILED, and PENDING.
• POST /api/get_status/{externalReference} returns a transaction only when it belongs to the organization on the API credential.
• Prefer /api/msisdn-verification for phone-name lookup. /api/verify_msisdn remains for older clients.