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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "verify-41": {
      "type": "http",
      "url": "https://api.zaroniacalculator.co.za/mcp"
    }
  }
}

4 tools

• 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…

• 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…

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