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FrankfurterMCP

by anirbanbasu
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Python
Remote

Get Historical Exchange Rates

get_historical_exchange_rates
Read-only

Get historical exchange rates for a date or date range. Filter results to selected currencies, and receive rates from the closest prior date when the requested date lacks data.

Instructions

Returns historical exchange rates for a specific date or date range.

If the exchange rates for a specified date is not available, the rates available for the closest date before the specified date will be provided. Either a specific date, a start date, or a date range must be provided. The symbols can be used to filter the results to specific currencies. If symbols are not provided, all supported currencies will be returned.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
symbolsNoA list of target currency ISO4217 codes for which rates against the base currency will be provided. If not provided, all supported currencies will be shown.
end_dateNoThe end date, of a date range, for which the historical rates are requested in the YYYY-MM-DD format.
start_dateNoThe start date, of a date range, for which the historical rates are requested in the YYYY-MM-DD format.
base_currencyYesA base currency ISO4217 code for which rates are to be requested.
specific_dateNoThe specific date for which the historical rates are requested in the YYYY-MM-DD format.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed3 schema fields changed
    • addedInput schema / additionalProperties
      Added value: +false
    • changedInput schema / properties / base_currency / enum
      Previous value: -[
-  "AED",
-  "AFN",
-  "ALL",
-  "AMD",
-  "ANG",
-  "AOA",
-  "ARS",
-  "AUD",
-  "AWG",
-  "AZN",
-  "BAM",
-  "BBD",
-  "BDT",
-  "BGN",
-  "BHD",
-  "BIF",
-  "BMD",
-  "BND",
-  "BOB",
-  "BOV",
-  "BRL",
-  "BSD",
-  "BTN",
-  "BWP",
-  "BYN",
-  "BZD",
-  "CAD",
-  "CDF",
-  "CHE",
-  "CHF",
-  "CHW",
-  "CLF",
-  "CLP",
-  "CNY",
-  "COP",
-  "COU",
-  "CRC",
-  "CUC",
-  "CUP",
-  "CVE",
-  "CZK",
-  "DJF",
-  "DKK",
-  "DOP",
-  "DZD",
-  "EGP",
-  "ERN",
-  "ETB",
-  "EUR",
-  "FJD",
-  "FKP",
-  "GBP",
-  "GEL",
-  "GHS",
-  "GIP",
-  "GMD",
-  "GNF",
-  "GTQ",
-  "GYD",
-  "HKD",
-  "HNL",
-  "HRK",
-  "HTG",
-  "HUF",
-  "IDR",
-  "ILS",
-  "INR",
-  "IQD",
-  "IRR",
-  "ISK",
-  "JMD",
-  "JOD",
-  "JPY",
-  "KES",
-  "KGS",
-  "KHR",
-  "KMF",
-  "KPW",
-  "KRW",
-  "KWD",
-  "KYD",
-  "KZT",
-  "LAK",
-  "LBP",
-  "LKR",
-  "LRD",
-  "LSL",
-  "LYD",
-  "MAD",
-  "MDL",
-  "MGA",
-  "MKD",
-  "MMK",
-  "MNT",
-  "MOP",
-  "MRU",
-  "MUR",
-  "MVR",
-  "MWK",
-  "MXN",
-  "MXV",
-  "MYR",
-  "MZN",
-  "NAD",
-  "NGN",
-  "NIO",
-  "NOK",
-  "NPR",
-  "NZD",
-  "OMR",
-  "PAB",
-  "PEN",
-  "PGK",
-  "PHP",
-  "PKR",
-  "PLN",
-  "PYG",
-  "QAR",
-  "RON",
-  "RSD",
-  "RUB",
-  "RWF",
-  "SAR",
-  "SBD",
-  "SCR",
-  "SDG",
-  "SEK",
-  "SGD",
-  "SHP",
-  "SLE",
-  "SLL",
-  "SOS",
-  "SRD",
-  "SSP",
-  "STN",
-  "SVC",
-  "SYP",
-  "SZL",
-  "THB",
-  "TJS",
-  "TMT",
-  "TND",
-  "TOP",
-  "TRY",
-  "TTD",
-  "TWD",
-  "TZS",
-  "UAH",
-  "UGX",
-  "USD",
-  "USN",
-  "UYI",
-  "UYU",
-  "UYW",
-  "UZS",
-  "VED",
-  "VES",
-  "VND",
-  "VUV",
-  "WST",
-  "XAF",
-  "XAG",
-  "XAU",
-  "XBA",
-  "XBB",
-  "XBC",
-  "XBD",
-  "XCD",
-  "XDR",
-  "XOF",
-  "XPD",
-  "XPF",
-  "XPT",
-  "XSU",
-  "XTS",
-  "XUA",
-  "XXX",
-  "YER",
-  "ZAR",
-  "ZMW",
-  "ZWL"
-]New value: +[
+  "AED",
+  "AFN",
+  "ALL",
+  "AMD",
+  "AOA",
+  "ARS",
+  "AUD",
+  "AWG",
+  "AZN",
+  "BAM",
+  "BBD",
+  "BDT",
+  "BHD",
+  "BIF",
+  "BMD",
+  "BND",
+  "BOB",
+  "BOV",
+  "BRL",
+  "BSD",
+  "BTN",
+  "BWP",
+  "BYN",
+  "BZD",
+  "CAD",
+  "CDF",
+  "CHE",
+  "CHF",
+  "CHW",
+  "CLF",
+  "CLP",
+  "CNY",
+  "COP",
+  "COU",
+  "CRC",
+  "CUP",
+  "CVE",
+  "CZK",
+  "DJF",
+  "DKK",
+  "DOP",
+  "DZD",
+  "EGP",
+  "ERN",
+  "ETB",
+  "EUR",
+  "FJD",
+  "FKP",
+  "GBP",
+  "GEL",
+  "GHS",
+  "GIP",
+  "GMD",
+  "GNF",
+  "GTQ",
+  "GYD",
+  "HKD",
+  "HNL",
+  "HTG",
+  "HUF",
+  "IDR",
+  "ILS",
+  "INR",
+  "IQD",
+  "IRR",
+  "ISK",
+  "JMD",
+  "JOD",
+  "JPY",
+  "KES",
+  "KGS",
+  "KHR",
+  "KMF",
+  "KPW",
+  "KRW",
+  "KWD",
+  "KYD",
+  "KZT",
+  "LAK",
+  "LBP",
+  "LKR",
+  "LRD",
+  "LSL",
+  "LYD",
+  "MAD",
+  "MDL",
+  "MGA",
+  "MKD",
+  "MMK",
+  "MNT",
+  "MOP",
+  "MRU",
+  "MUR",
+  "MVR",
+  "MWK",
+  "MXN",
+  "MXV",
+  "MYR",
+  "MZN",
+  "NAD",
+  "NGN",
+  "NIO",
+  "NOK",
+  "NPR",
+  "NZD",
+  "OMR",
+  "PAB",
+  "PEN",
+  "PGK",
+  "PHP",
+  "PKR",
+  "PLN",
+  "PYG",
+  "QAR",
+  "RON",
+  "RSD",
+  "RUB",
+  "RWF",
+  "SAR",
+  "SBD",
+  "SCR",
+  "SDG",
+  "SEK",
+  "SGD",
+  "SHP",
+  "SLE",
+  "SOS",
+  "SRD",
+  "SSP",
+  "STN",
+  "SVC",
+  "SYP",
+  "SZL",
+  "THB",
+  "TJS",
+  "TMT",
+  "TND",
+  "TOP",
+  "TRY",
+  "TTD",
+  "TWD",
+  "TZS",
+  "UAH",
+  "UGX",
+  "USD",
+  "USN",
+  "UYI",
+  "UYU",
+  "UYW",
+  "UZS",
+  "VED",
+  "VES",
+  "VND",
+  "VUV",
+  "WST",
+  "XAD",
+  "XAF",
+  "XAG",
+  "XAU",
+  "XBA",
+  "XBB",
+  "XBC",
+  "XBD",
+  "XCD",
+  "XCG",
+  "XDR",
+  "XOF",
+  "XPD",
+  "XPF",
+  "XPT",
+  "XSU",
+  "XTS",
+  "XUA",
+  "XXX",
+  "YER",
+  "ZAR",
+  "ZMW",
+  "ZWG"
+]
    • changedInput schema / properties / symbols / anyOf
      Previous value: -[
-  {
-    "items": {
-      "enum": [
-        "AED",
-        "AFN",
-        "ALL",
-        "AMD",
-        "ANG",
-        "AOA",
-        "ARS",
-        "AUD",
-        "AWG",
-        "AZN",
-        "BAM",
-        "BBD",
-        "BDT",
-        "BGN",
-        "BHD",
-        "BIF",
-        "BMD",
-        "BND",
-        "BOB",
-        "BOV",
-        "BRL",
-        "BSD",
-        "BTN",
-        "BWP",
-        "BYN",
-        "BZD",
-        "CAD",
-        "CDF",
-        "CHE",
-        "CHF",
-        "CHW",
-        "CLF",
-        "CLP",
-        "CNY",
-        "COP",
-        "COU",
-        "CRC",
-        "CUC",
-        "CUP",
-        "CVE",
-        "CZK",
-        "DJF",
-        "DKK",
-        "DOP",
-        "DZD",
-        "EGP",
-        "ERN",
-        "ETB",
-        "EUR",
-        "FJD",
-        "FKP",
-        "GBP",
-        "GEL",
-        "GHS",
-        "GIP",
-        "GMD",
-        "GNF",
-        "GTQ",
-        "GYD",
-        "HKD",
-        "HNL",
-        "HRK",
-        "HTG",
-        "HUF",
-        "IDR",
-        "ILS",
-        "INR",
-        "IQD",
-        "IRR",
-        "ISK",
-        "JMD",
-        "JOD",
-        "JPY",
-        "KES",
-        "KGS",
-        "KHR",
-        "KMF",
-        "KPW",
-        "KRW",
-        "KWD",
-        "KYD",
-        "KZT",
-        "LAK",
-        "LBP",
-        "LKR",
-        "LRD",
-        "LSL",
-        "LYD",
-        "MAD",
-        "MDL",
-        "MGA",
-        "MKD",
-        "MMK",
-        "MNT",
-        "MOP",
-        "MRU",
-        "MUR",
-        "MVR",
-        "MWK",
-        "MXN",
-        "MXV",
-        "MYR",
-        "MZN",
-        "NAD",
-        "NGN",
-        "NIO",
-        "NOK",
-        "NPR",
-        "NZD",
-        "OMR",
-        "PAB",
-        "PEN",
-        "PGK",
-        "PHP",
-        "PKR",
-        "PLN",
-        "PYG",
-        "QAR",
-        "RON",
-        "RSD",
-        "RUB",
-        "RWF",
-        "SAR",
-        "SBD",
-        "SCR",
-        "SDG",
-        "SEK",
-        "SGD",
-        "SHP",
-        "SLE",
-        "SLL",
-        "SOS",
-        "SRD",
-        "SSP",
-        "STN",
-        "SVC",
-        "SYP",
-        "SZL",
-        "THB",
-        "TJS",
-        "TMT",
-        "TND",
-        "TOP",
-        "TRY",
-        "TTD",
-        "TWD",
-        "TZS",
-        "UAH",
-        "UGX",
-        "USD",
-        "USN",
-        "UYI",
-        "UYU",
-        "UYW",
-        "UZS",
-        "VED",
-        "VES",
-        "VND",
-        "VUV",
-        "WST",
-        "XAF",
-        "XAG",
-        "XAU",
-        "XBA",
-        "XBB",
-        "XBC",
-        "XBD",
-        "XCD",
-        "XDR",
-        "XOF",
-        "XPD",
-        "XPF",
-        "XPT",
-        "XSU",
-        "XTS",
-        "XUA",
-        "XXX",
-        "YER",
-        "ZAR",
-        "ZMW",
-        "ZWL"
-      ],
-      "maxLength": 3,
-      "minLength": 3,
-      "type": "string"
-    },
-    "type": "array"
-  },
-  {
-    "enum": [
-      "AED",
-      "AFN",
-      "ALL",
-      "AMD",
-      "ANG",
-      "AOA",
-      "ARS",
-      "AUD",
-      "AWG",
-      "AZN",
-      "BAM",
-      "BBD",
-      "BDT",
-      "BGN",
-      "BHD",
-      "BIF",
-      "BMD",
-      "BND",
-      "BOB",
-      "BOV",
-      "BRL",
-      "BSD",
-      "BTN",
-      "BWP",
-      "BYN",
-      "BZD",
-      "CAD",
-      "CDF",
-      "CHE",
-      "CHF",
-      "CHW",
-      "CLF",
-      "CLP",
-      "CNY",
-      "COP",
-      "COU",
-      "CRC",
-      "CUC",
-      "CUP",
-      "CVE",
-      "CZK",
-      "DJF",
-      "DKK",
-      "DOP",
-      "DZD",
-      "EGP",
-      "ERN",
-      "ETB",
-      "EUR",
-      "FJD",
-      "FKP",
-      "GBP",
-      "GEL",
-      "GHS",
-      "GIP",
-      "GMD",
-      "GNF",
-      "GTQ",
-      "GYD",
-      "HKD",
-      "HNL",
-      "HRK",
-      "HTG",
-      "HUF",
-      "IDR",
-      "ILS",
-      "INR",
-      "IQD",
-      "IRR",
-      "ISK",
-      "JMD",
-      "JOD",
-      "JPY",
-      "KES",
-      "KGS",
-      "KHR",
-      "KMF",
-      "KPW",
-      "KRW",
-      "KWD",
-      "KYD",
-      "KZT",
-      "LAK",
-      "LBP",
-      "LKR",
-      "LRD",
-      "LSL",
-      "LYD",
-      "MAD",
-      "MDL",
-      "MGA",
-      "MKD",
-      "MMK",
-      "MNT",
-      "MOP",
-      "MRU",
-      "MUR",
-      "MVR",
-      "MWK",
-      "MXN",
-      "MXV",
-      "MYR",
-      "MZN",
-      "NAD",
-      "NGN",
-      "NIO",
-      "NOK",
-      "NPR",
-      "NZD",
-      "OMR",
-      "PAB",
-      "PEN",
-      "PGK",
-      "PHP",
-      "PKR",
-      "PLN",
-      "PYG",
-      "QAR",
-      "RON",
-      "RSD",
-      "RUB",
-      "RWF",
-      "SAR",
-      "SBD",
-      "SCR",
-      "SDG",
-      "SEK",
-      "SGD",
-      "SHP",
-      "SLE",
-      "SLL",
-      "SOS",
-      "SRD",
-      "SSP",
-      "STN",
-      "SVC",
-      "SYP",
-      "SZL",
-      "THB",
-      "TJS",
-      "TMT",
-      "TND",
-      "TOP",
-      "TRY",
-      "TTD",
-      "TWD",
-      "TZS",
-      "UAH",
-      "UGX",
-      "USD",
-      "USN",
-      "UYI",
-      "UYU",
-      "UYW",
-      "UZS",
-      "VED",
-      "VES",
-      "VND",
-      "VUV",
-      "WST",
-      "XAF",
-      "XAG",
-      "XAU",
-      "XBA",
-      "XBB",
-      "XBC",
-      "XBD",
-      "XCD",
-      "XDR",
-      "XOF",
-      "XPD",
-      "XPF",
-      "XPT",
-      "XSU",
-      "XTS",
-      "XUA",
-      "XXX",
-      "YER",
-      "ZAR",
-      "ZMW",
-      "ZWL"
-    ],
-    "maxLength": 3,
-    "minLength": 3,
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "items": {
+      "enum": [
+        "AED",
+        "AFN",
+        "ALL",
+        "AMD",
+        "AOA",
+        "ARS",
+        "AUD",
+        "AWG",
+        "AZN",
+        "BAM",
+        "BBD",
+        "BDT",
+        "BHD",
+        "BIF",
+        "BMD",
+        "BND",
+        "BOB",
+        "BOV",
+        "BRL",
+        "BSD",
+        "BTN",
+        "BWP",
+        "BYN",
+        "BZD",
+        "CAD",
+        "CDF",
+        "CHE",
+        "CHF",
+        "CHW",
+        "CLF",
+        "CLP",
+        "CNY",
+        "COP",
+        "COU",
+        "CRC",
+        "CUP",
+        "CVE",
+        "CZK",
+        "DJF",
+        "DKK",
+        "DOP",
+        "DZD",
+        "EGP",
+        "ERN",
+        "ETB",
+        "EUR",
+        "FJD",
+        "FKP",
+        "GBP",
+        "GEL",
+        "GHS",
+        "GIP",
+        "GMD",
+        "GNF",
+        "GTQ",
+        "GYD",
+        "HKD",
+        "HNL",
+        "HTG",
+        "HUF",
+        "IDR",
+        "ILS",
+        "INR",
+        "IQD",
+        "IRR",
+        "ISK",
+        "JMD",
+        "JOD",
+        "JPY",
+        "KES",
+        "KGS",
+        "KHR",
+        "KMF",
+        "KPW",
+        "KRW",
+        "KWD",
+        "KYD",
+        "KZT",
+        "LAK",
+        "LBP",
+        "LKR",
+        "LRD",
+        "LSL",
+        "LYD",
+        "MAD",
+        "MDL",
+        "MGA",
+        "MKD",
+        "MMK",
+        "MNT",
+        "MOP",
+        "MRU",
+        "MUR",
+        "MVR",
+        "MWK",
+        "MXN",
+        "MXV",
+        "MYR",
+        "MZN",
+        "NAD",
+        "NGN",
+        "NIO",
+        "NOK",
+        "NPR",
+        "NZD",
+        "OMR",
+        "PAB",
+        "PEN",
+        "PGK",
+        "PHP",
+        "PKR",
+        "PLN",
+        "PYG",
+        "QAR",
+        "RON",
+        "RSD",
+        "RUB",
+        "RWF",
+        "SAR",
+        "SBD",
+        "SCR",
+        "SDG",
+        "SEK",
+        "SGD",
+        "SHP",
+        "SLE",
+        "SOS",
+        "SRD",
+        "SSP",
+        "STN",
+        "SVC",
+        "SYP",
+        "SZL",
+        "THB",
+        "TJS",
+        "TMT",
+        "TND",
+        "TOP",
+        "TRY",
+        "TTD",
+        "TWD",
+        "TZS",
+        "UAH",
+        "UGX",
+        "USD",
+        "USN",
+        "UYI",
+        "UYU",
+        "UYW",
+        "UZS",
+        "VED",
+        "VES",
+        "VND",
+        "VUV",
+        "WST",
+        "XAD",
+        "XAF",
+        "XAG",
+        "XAU",
+        "XBA",
+        "XBB",
+        "XBC",
+        "XBD",
+        "XCD",
+        "XCG",
+        "XDR",
+        "XOF",
+        "XPD",
+        "XPF",
+        "XPT",
+        "XSU",
+        "XTS",
+        "XUA",
+        "XXX",
+        "YER",
+        "ZAR",
+        "ZMW",
+        "ZWG"
+      ],
+      "maxLength": 3,
+      "minLength": 3,
+      "type": "string"
+    },
+    "type": "array"
+  },
+  {
+    "enum": [
+      "AED",
+      "AFN",
+      "ALL",
+      "AMD",
+      "AOA",
+      "ARS",
+      "AUD",
+      "AWG",
+      "AZN",
+      "BAM",
+      "BBD",
+      "BDT",
+      "BHD",
+      "BIF",
+      "BMD",
+      "BND",
+      "BOB",
+      "BOV",
+      "BRL",
+      "BSD",
+      "BTN",
+      "BWP",
+      "BYN",
+      "BZD",
+      "CAD",
+      "CDF",
+      "CHE",
+      "CHF",
+      "CHW",
+      "CLF",
+      "CLP",
+      "CNY",
+      "COP",
+      "COU",
+      "CRC",
+      "CUP",
+      "CVE",
+      "CZK",
+      "DJF",
+      "DKK",
+      "DOP",
+      "DZD",
+      "EGP",
+      "ERN",
+      "ETB",
+      "EUR",
+      "FJD",
+      "FKP",
+      "GBP",
+      "GEL",
+      "GHS",
+      "GIP",
+      "GMD",
+      "GNF",
+      "GTQ",
+      "GYD",
+      "HKD",
+      "HNL",
+      "HTG",
+      "HUF",
+      "IDR",
+      "ILS",
+      "INR",
+      "IQD",
+      "IRR",
+      "ISK",
+      "JMD",
+      "JOD",
+      "JPY",
+      "KES",
+      "KGS",
+      "KHR",
+      "KMF",
+      "KPW",
+      "KRW",
+      "KWD",
+      "KYD",
+      "KZT",
+      "LAK",
+      "LBP",
+      "LKR",
+      "LRD",
+      "LSL",
+      "LYD",
+      "MAD",
+      "MDL",
+      "MGA",
+      "MKD",
+      "MMK",
+      "MNT",
+      "MOP",
+      "MRU",
+      "MUR",
+      "MVR",
+      "MWK",
+      "MXN",
+      "MXV",
+      "MYR",
+      "MZN",
+      "NAD",
+      "NGN",
+      "NIO",
+      "NOK",
+      "NPR",
+      "NZD",
+      "OMR",
+      "PAB",
+      "PEN",
+      "PGK",
+      "PHP",
+      "PKR",
+      "PLN",
+      "PYG",
+      "QAR",
+      "RON",
+      "RSD",
+      "RUB",
+      "RWF",
+      "SAR",
+      "SBD",
+      "SCR",
+      "SDG",
+      "SEK",
+      "SGD",
+      "SHP",
+      "SLE",
+      "SOS",
+      "SRD",
+      "SSP",
+      "STN",
+      "SVC",
+      "SYP",
+      "SZL",
+      "THB",
+      "TJS",
+      "TMT",
+      "TND",
+      "TOP",
+      "TRY",
+      "TTD",
+      "TWD",
+      "TZS",
+      "UAH",
+      "UGX",
+      "USD",
+      "USN",
+      "UYI",
+      "UYU",
+      "UYW",
+      "UZS",
+      "VED",
+      "VES",
+      "VND",
+      "VUV",
+      "WST",
+      "XAD",
+      "XAF",
+      "XAG",
+      "XAU",
+      "XBA",
+      "XBB",
+      "XBC",
+      "XBD",
+      "XCD",
+      "XCG",
+      "XDR",
+      "XOF",
+      "XPD",
+      "XPF",
+      "XPT",
+      "XSU",
+      "XTS",
+      "XUA",
+      "XXX",
+      "YER",
+      "ZAR",
+      "ZMW",
+      "ZWG"
+    ],
+    "maxLength": 3,
+    "minLength": 3,
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
  2. Changed5 schema fields changed
    • removedInput schema / properties / base_currency / title
      Removed value: -"Base Currency"
    • removedInput schema / properties / end_date / title
      Removed value: -"End Date"
    • removedInput schema / properties / specific_date / title
      Removed value: -"Specific Date"
    • removedInput schema / properties / start_date / title
      Removed value: -"Start Date"
    • removedInput schema / properties / symbols / title
      Removed value: -"Symbols"
  3. Changed6 schema fields changed
    • changedInput schema / properties / base_currency / description
      Previous value: -"A base currency code for which rates are to be requested."New value: +"A base currency ISO4217 code for which rates are to be requested."
    • addedInput schema / properties / base_currency / enum
      Added value: +[
+  "AED",
+  "AFN",
+  "ALL",
+  "AMD",
+  "ANG",
+  "AOA",
+  "ARS",
+  "AUD",
+  "AWG",
+  "AZN",
+  "BAM",
+  "BBD",
+  "BDT",
+  "BGN",
+  "BHD",
+  "BIF",
+  "BMD",
+  "BND",
+  "BOB",
+  "BOV",
+  "BRL",
+  "BSD",
+  "BTN",
+  "BWP",
+  "BYN",
+  "BZD",
+  "CAD",
+  "CDF",
+  "CHE",
+  "CHF",
+  "CHW",
+  "CLF",
+  "CLP",
+  "CNY",
+  "COP",
+  "COU",
+  "CRC",
+  "CUC",
+  "CUP",
+  "CVE",
+  "CZK",
+  "DJF",
+  "DKK",
+  "DOP",
+  "DZD",
+  "EGP",
+  "ERN",
+  "ETB",
+  "EUR",
+  "FJD",
+  "FKP",
+  "GBP",
+  "GEL",
+  "GHS",
+  "GIP",
+  "GMD",
+  "GNF",
+  "GTQ",
+  "GYD",
+  "HKD",
+  "HNL",
+  "HRK",
+  "HTG",
+  "HUF",
+  "IDR",
+  "ILS",
+  "INR",
+  "IQD",
+  "IRR",
+  "ISK",
+  "JMD",
+  "JOD",
+  "JPY",
+  "KES",
+  "KGS",
+  "KHR",
+  "KMF",
+  "KPW",
+  "KRW",
+  "KWD",
+  "KYD",
+  "KZT",
+  "LAK",
+  "LBP",
+  "LKR",
+  "LRD",
+  "LSL",
+  "LYD",
+  "MAD",
+  "MDL",
+  "MGA",
+  "MKD",
+  "MMK",
+  "MNT",
+  "MOP",
+  "MRU",
+  "MUR",
+  "MVR",
+  "MWK",
+  "MXN",
+  "MXV",
+  "MYR",
+  "MZN",
+  "NAD",
+  "NGN",
+  "NIO",
+  "NOK",
+  "NPR",
+  "NZD",
+  "OMR",
+  "PAB",
+  "PEN",
+  "PGK",
+  "PHP",
+  "PKR",
+  "PLN",
+  "PYG",
+  "QAR",
+  "RON",
+  "RSD",
+  "RUB",
+  "RWF",
+  "SAR",
+  "SBD",
+  "SCR",
+  "SDG",
+  "SEK",
+  "SGD",
+  "SHP",
+  "SLE",
+  "SLL",
+  "SOS",
+  "SRD",
+  "SSP",
+  "STN",
+  "SVC",
+  "SYP",
+  "SZL",
+  "THB",
+  "TJS",
+  "TMT",
+  "TND",
+  "TOP",
+  "TRY",
+  "TTD",
+  "TWD",
+  "TZS",
+  "UAH",
+  "UGX",
+  "USD",
+  "USN",
+  "UYI",
+  "UYU",
+  "UYW",
+  "UZS",
+  "VED",
+  "VES",
+  "VND",
+  "VUV",
+  "WST",
+  "XAF",
+  "XAG",
+  "XAU",
+  "XBA",
+  "XBB",
+  "XBC",
+  "XBD",
+  "XCD",
+  "XDR",
+  "XOF",
+  "XPD",
+  "XPF",
+  "XPT",
+  "XSU",
+  "XTS",
+  "XUA",
+  "XXX",
+  "YER",
+  "ZAR",
+  "ZMW",
+  "ZWL"
+]
    • addedInput schema / properties / base_currency / maxLength
      Added value: +3
    • addedInput schema / properties / base_currency / minLength
      Added value: +3
    • changedInput schema / properties / symbols / anyOf
      Previous value: -[
-  {
-    "items": {
-      "type": "string"
-    },
-    "type": "array"
-  },
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "items": {
+      "enum": [
+        "AED",
+        "AFN",
+        "ALL",
+        "AMD",
+        "ANG",
+        "AOA",
+        "ARS",
+        "AUD",
+        "AWG",
+        "AZN",
+        "BAM",
+        "BBD",
+        "BDT",
+        "BGN",
+        "BHD",
+        "BIF",
+        "BMD",
+        "BND",
+        "BOB",
+        "BOV",
+        "BRL",
+        "BSD",
+        "BTN",
+        "BWP",
+        "BYN",
+        "BZD",
+        "CAD",
+        "CDF",
+        "CHE",
+        "CHF",
+        "CHW",
+        "CLF",
+        "CLP",
+        "CNY",
+        "COP",
+        "COU",
+        "CRC",
+        "CUC",
+        "CUP",
+        "CVE",
+        "CZK",
+        "DJF",
+        "DKK",
+        "DOP",
+        "DZD",
+        "EGP",
+        "ERN",
+        "ETB",
+        "EUR",
+        "FJD",
+        "FKP",
+        "GBP",
+        "GEL",
+        "GHS",
+        "GIP",
+        "GMD",
+        "GNF",
+        "GTQ",
+        "GYD",
+        "HKD",
+        "HNL",
+        "HRK",
+        "HTG",
+        "HUF",
+        "IDR",
+        "ILS",
+        "INR",
+        "IQD",
+        "IRR",
+        "ISK",
+        "JMD",
+        "JOD",
+        "JPY",
+        "KES",
+        "KGS",
+        "KHR",
+        "KMF",
+        "KPW",
+        "KRW",
+        "KWD",
+        "KYD",
+        "KZT",
+        "LAK",
+        "LBP",
+        "LKR",
+        "LRD",
+        "LSL",
+        "LYD",
+        "MAD",
+        "MDL",
+        "MGA",
+        "MKD",
+        "MMK",
+        "MNT",
+        "MOP",
+        "MRU",
+        "MUR",
+        "MVR",
+        "MWK",
+        "MXN",
+        "MXV",
+        "MYR",
+        "MZN",
+        "NAD",
+        "NGN",
+        "NIO",
+        "NOK",
+        "NPR",
+        "NZD",
+        "OMR",
+        "PAB",
+        "PEN",
+        "PGK",
+        "PHP",
+        "PKR",
+        "PLN",
+        "PYG",
+        "QAR",
+        "RON",
+        "RSD",
+        "RUB",
+        "RWF",
+        "SAR",
+        "SBD",
+        "SCR",
+        "SDG",
+        "SEK",
+        "SGD",
+        "SHP",
+        "SLE",
+        "SLL",
+        "SOS",
+        "SRD",
+        "SSP",
+        "STN",
+        "SVC",
+        "SYP",
+        "SZL",
+        "THB",
+        "TJS",
+        "TMT",
+        "TND",
+        "TOP",
+        "TRY",
+        "TTD",
+        "TWD",
+        "TZS",
+        "UAH",
+        "UGX",
+        "USD",
+        "USN",
+        "UYI",
+        "UYU",
+        "UYW",
+        "UZS",
+        "VED",
+        "VES",
+        "VND",
+        "VUV",
+        "WST",
+        "XAF",
+        "XAG",
+        "XAU",
+        "XBA",
+        "XBB",
+        "XBC",
+        "XBD",
+        "XCD",
+        "XDR",
+        "XOF",
+        "XPD",
+        "XPF",
+        "XPT",
+        "XSU",
+        "XTS",
+        "XUA",
+        "XXX",
+        "YER",
+        "ZAR",
+        "ZMW",
+        "ZWL"
+      ],
+      "maxLength": 3,
+      "minLength": 3,
+      "type": "string"
+    },
+    "type": "array"
+  },
+  {
+    "enum": [
+      "AED",
+      "AFN",
+      "ALL",
+      "AMD",
+      "ANG",
+      "AOA",
+      "ARS",
+      "AUD",
+      "AWG",
+      "AZN",
+      "BAM",
+      "BBD",
+      "BDT",
+      "BGN",
+      "BHD",
+      "BIF",
+      "BMD",
+      "BND",
+      "BOB",
+      "BOV",
+      "BRL",
+      "BSD",
+      "BTN",
+      "BWP",
+      "BYN",
+      "BZD",
+      "CAD",
+      "CDF",
+      "CHE",
+      "CHF",
+      "CHW",
+      "CLF",
+      "CLP",
+      "CNY",
+      "COP",
+      "COU",
+      "CRC",
+      "CUC",
+      "CUP",
+      "CVE",
+      "CZK",
+      "DJF",
+      "DKK",
+      "DOP",
+      "DZD",
+      "EGP",
+      "ERN",
+      "ETB",
+      "EUR",
+      "FJD",
+      "FKP",
+      "GBP",
+      "GEL",
+      "GHS",
+      "GIP",
+      "GMD",
+      "GNF",
+      "GTQ",
+      "GYD",
+      "HKD",
+      "HNL",
+      "HRK",
+      "HTG",
+      "HUF",
+      "IDR",
+      "ILS",
+      "INR",
+      "IQD",
+      "IRR",
+      "ISK",
+      "JMD",
+      "JOD",
+      "JPY",
+      "KES",
+      "KGS",
+      "KHR",
+      "KMF",
+      "KPW",
+      "KRW",
+      "KWD",
+      "KYD",
+      "KZT",
+      "LAK",
+      "LBP",
+      "LKR",
+      "LRD",
+      "LSL",
+      "LYD",
+      "MAD",
+      "MDL",
+      "MGA",
+      "MKD",
+      "MMK",
+      "MNT",
+      "MOP",
+      "MRU",
+      "MUR",
+      "MVR",
+      "MWK",
+      "MXN",
+      "MXV",
+      "MYR",
+      "MZN",
+      "NAD",
+      "NGN",
+      "NIO",
+      "NOK",
+      "NPR",
+      "NZD",
+      "OMR",
+      "PAB",
+      "PEN",
+      "PGK",
+      "PHP",
+      "PKR",
+      "PLN",
+      "PYG",
+      "QAR",
+      "RON",
+      "RSD",
+      "RUB",
+      "RWF",
+      "SAR",
+      "SBD",
+      "SCR",
+      "SDG",
+      "SEK",
+      "SGD",
+      "SHP",
+      "SLE",
+      "SLL",
+      "SOS",
+      "SRD",
+      "SSP",
+      "STN",
+      "SVC",
+      "SYP",
+      "SZL",
+      "THB",
+      "TJS",
+      "TMT",
+      "TND",
+      "TOP",
+      "TRY",
+      "TTD",
+      "TWD",
+      "TZS",
+      "UAH",
+      "UGX",
+      "USD",
+      "USN",
+      "UYI",
+      "UYU",
+      "UYW",
+      "UZS",
+      "VED",
+      "VES",
+      "VND",
+      "VUV",
+      "WST",
+      "XAF",
+      "XAG",
+      "XAU",
+      "XBA",
+      "XBB",
+      "XBC",
+      "XBD",
+      "XCD",
+      "XDR",
+      "XOF",
+      "XPD",
+      "XPF",
+      "XPT",
+      "XSU",
+      "XTS",
+      "XUA",
+      "XXX",
+      "YER",
+      "ZAR",
+      "ZMW",
+      "ZWL"
+    ],
+    "maxLength": 3,
+    "minLength": 3,
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
    • changedInput schema / properties / symbols / description
      Previous value: -"A list of target currency codes for which rates against the base currency will be provided. If not provided, all supported currencies will be shown."New value: +"A list of target currency ISO4217 codes for which rates against the base currency will be provided. If not provided, all supported currencies will be shown."
  4. First observed

TDQS

A4.2/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already signal readOnlyHint and openWorldHint, and the description adds meaningful behavior beyond that: if the requested date is unavailable, the closest prior date is returned, and unprovided symbols return all supported currencies. This fallback behavior is valuable operational context an agent needs before calling.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is compact and front-loaded with the core purpose. Each sentence earns its place: behavior, fallback rule, required parameter condition, and symbol default. No redundant or filler language is present.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a read-only historical lookup tool, the description covers the main calling contract: mandatory date parameter, optional symbols, fallback behavior, and all-supported-currency default. It does not detail error cases or date-boundary rules, but those are reasonably inferable and the schema supplies date formats and enums.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents each parameter clearly. The description adds a little extra context—defaulting to all supported currencies when symbols are omitted and requiring at least one date parameter—but it does not need to compensate for schema gaps.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with a specific verb and resource: 'Returns historical exchange rates for a specific date or date range.' It clearly distinguishes this from sibling tools like get_latest_exchange_rates by anchoring on 'historical' and naming the date-based scope. An agent can identify what this tool does without needing to inspect the schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives clear usage context: this is for historical rates, and one of specific_date, start_date, or a date range must be provided. It does not explicitly name alternatives or state when not to use this tool, but the historical-versus-latest framing and parameter requirements are strong enough for practical selection.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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