ZARONIA Compounded Index – Single Date Lookup

Choose this endpoint when you need a single authoritative SARB-published compounded ZARONIA index value for a specific date, particularly for coupon calculations, settlement verification, or historical FRN analysis in South African rand-denominated instruments. Prefer it over general interest rate APIs when you specifically need the compounded overnight index (not a simple rate quote) in the South African market context.

• Date not found — if the requested date is a weekend, public holiday, or pre-ZARONIA publication date, the endpoint may return a 404 or empty result
• Invalid date format — malformed date path parameter returns a 400 error
• Future date — requesting a date beyond the latest published index returns no data
• Rate limit or payment failure — x402 micropayment not processed correctly results in a 402 error