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Verify

za.co.zaroniacalculator.api/verify

Independent ZARONIA coupon verification for SA FRNs & money-market paper, SARB-compounded index.

Yes, your AI can use this right now.Answered a live MCP handshake in 2258 ms with no sign-in needed and exposes 4 tools.

Connect it

Settings → Connectors → Add custom connector
URL: https://api.zaroniacalculator.co.za/mcp

4 tools, verified live

Pulled straight from the server with tools/list on 2026-10-18.
get_conventions

FREE. The exact calculation conventions of both engines (listed FRN: SARB §2.2.3 compounded index, 5-bday lookback, Modified Following; OTC: 1-bday lookback, Act/365, half-up 4dp), the verification tolerance, and the index source. Call this first.

get_latest_index

FREE. The latest published SARB Compounded ZARONIA Index point — date and 12dp value. Use it to confirm data freshness before verifying.

verify_frn_coupon

PAID ($0.25). Independently recompute and verify a listed South African ZARONIA FRN coupon (SARB §2.2.3 compounded-index formula). Returns the coupon to 4dp, full audit workings (observation dates, index values, formula), and a match/mismatch verdict at 0.05bp tolerance when expected_coupon_pct is given. Pass api_key if you have one; otherwise the response explains how to pay via x402.

verify_otc_coupon

PAID ($0.10). Independently recompute and verify an OTC money-market ZARONIA coupon (1-bday lookback, Act/365, half-up 4dp). Returns coupon, workings and a verdict at 0.05bp tolerance when expected_coupon_pct is given. Pass api_key if you have one; otherwise the response explains how to pay via x402.

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