Frankfurter

Convert currency

convert

Read-only

Convert money using a reference rate. Returns {amount,currency}, rounded to the target's minor units (8 significant figures for metals/crypto). Set details for the rate and effective date too; identity conversions have rate 1 and date null.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "amount": "<amount>",
      "from": "<from>",
      "to": "<to>"
    },
    "name": "convert"
  }
}

Input Schema

Name	Required	Description
`to`	Yes	Target currency or asset code.
`date`	No	Date YYYY-MM-DD for a past rate; omit for latest.
`from`	Yes	Source currency or asset code, e.g. USD, XAU or BTC.
`amount`	Yes	Numeric amount in the source currency; normalize localized input first.
`details`	No	Include rate, effective date and provider if selected. Default false.
`provider`	No	Provider or dataset key, e.g. ECB or NBP.B; omit for blended rates.

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedNov 9, 2026

changedInput schema / properties / provider / description

Previous value: -"Institution's key, e.g. ECB or UST; omit for blended rates."New value: +"Provider or dataset key, e.g. ECB or NBP.B; omit for blended rates."

changedInput schema / properties / provider / maxLength
```
Previous value: -8New value: +16
```

Changed4 schema fields changedNov 8, 2026

changedInput schema / properties / amount / description

Previous value: -"Amount in the source currency. Normalize localized input first: '100,50' -> 100.5; German '1.000,50' -> 1000.5; English '1,000.50' -> 1000.5."New value: +"Numeric amount in the source currency; normalize localized input first."

addedInput schema / properties / details

Added value: +{
+  "description": "Include rate, effective date and provider if selected. Default false.",
+  "type": "boolean"
+}

changedInput schema / properties / from / description

Previous value: -"Source currency or asset code, e.g. USD, XAU or BTC. Call list_currencies if unsure."New value: +"Source currency or asset code, e.g. USD, XAU or BTC."

changedInput schema / properties / provider / description

Previous value: -"Provider key, e.g. ECB for European Central Bank or UST for U.S. Treasury reporting rates. Serves that institution's published rates instead of the blend; a date inside a weekly, monthly or quarterly provider's period returns the rate in force. Keys at https://frankfurter.dev/providers/."New value: +"Institution's key, e.g. ECB or UST; omit for blended rates."

Changed1 schema field changedNov 8, 2026

changedInput schema / properties / from / description

Previous value: -"Source currency or asset code, e.g. USD, XAU or BTC."New value: +"Source currency or asset code, e.g. USD, XAU or BTC. Call list_currencies if unsure."

Changed8 schema fields changedNov 6, 2026
- changedInput schema / properties / from / description
```
Previous value: -"ISO 4217 source currency."New value: +"Source currency or asset code, e.g. USD, XAU or BTC."
```
- removedInput schema / properties / from / maxLength
```
Removed value: -3
```
- removedInput schema / properties / from / minLength
```
Removed value: -3
```
- addedInput schema / properties / from / pattern
```
Added value: +"^[A-Za-z0-9]{3,5}$"
```
- changedInput schema / properties / to / description
```
Previous value: -"ISO 4217 target currency."New value: +"Target currency or asset code."
```
- removedInput schema / properties / to / maxLength
```
Removed value: -3
```
- removedInput schema / properties / to / minLength
```
Removed value: -3
```
- addedInput schema / properties / to / pattern
```
Added value: +"^[A-Za-z0-9]{3,5}$"
```

Changed1 schema field changedNov 2, 2026

changedInput schema / properties / provider / description

Previous value: -"Provider key, e.g. ECB for European Central Bank or UST for U.S. Treasury reporting rates. Serves that institution's published rates instead of the blend; a date inside a monthly or quarterly provider's period returns the rate in force. Keys at https://frankfurter.dev/providers/."New value: +"Provider key, e.g. ECB for European Central Bank or UST for U.S. Treasury reporting rates. Serves that institution's published rates instead of the blend; a date inside a weekly, monthly or quarterly provider's period returns the rate in force. Keys at https://frankfurter.dev/providers/."

Changed1 schema field changedSep 23, 2026

changedInput schema / properties / provider / description

Previous value: -"Provider key, e.g. UST for U.S. Treasury reporting rates. Serves that institution's published rates instead of the blend; a date inside a monthly or quarterly provider's period returns the rate in force. Keys at https://frankfurter.dev/providers/."New value: +"Provider key, e.g. ECB for European Central Bank or UST for U.S. Treasury reporting rates. Serves that institution's published rates instead of the blend; a date inside a monthly or quarterly provider's period returns the rate in force. Keys at https://frankfurter.dev/providers/."

Changed1 schema field changedSep 10, 2026

addedInput schema / properties / provider

Added value: +{
+  "description": "Provider key, e.g. UST for U.S. Treasury reporting rates. Serves that institution's published rates instead of the blend; a date inside a monthly or quarterly provider's period returns the rate in force. Keys at https://frankfurter.dev/providers/.",
+  "maxLength": 8,
+  "minLength": 2,
+  "type": "string"
+}

Changed2 schema fields changedJul 27, 2026

changedInput schema / properties / amount / description

Previous value: -"Amount in the source currency."New value: +"Amount in the source currency. Normalize localized input first: '100,50' -> 100.5; German '1.000,50' -> 1000.5; English '1,000.50' -> 1000.5."

changedInput schema / properties / date / description

Previous value: -"Historical date YYYY-MM-DD. Omit for latest."New value: +"Date YYYY-MM-DD for a past rate; omit for latest."

First observedMay 19, 2026

TDQS

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Convert currency

Tool call template

Input Schema

Schema Changelog

TDQS

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