Exchange rates

Update existing currency exchange rate.

PUT

https://firefly.example.com/api/v1/exchange-rates/{id}

Used to update a single currency exchange rate by its ID. Including the from/to currency is optional.

curl -X PUT 'https://firefly.example.com/api/v1/exchange-rates/123' \
  -H 'X-Trace-Id: 40c71bbb-c676-4f24-83cf-cc725d7d7a00' \
  -H 'Authorization: Bearer YOUR_TOKEN' \
  -H 'Content-Type: application/json' \
  --data-raw '{
  "date": "2026-10-01",
  "rate": "2.3456",
  "from": "USD",
  "to": "EUR"
}'

const body = `{
  "date": "2026-10-01",
  "rate": "2.3456",
  "from": "USD",
  "to": "EUR"
}`;

const response = await fetch('https://firefly.example.com/api/v1/exchange-rates/123', {
  method: 'PUT',
  headers: {
    'X-Trace-Id': '40c71bbb-c676-4f24-83cf-cc725d7d7a00',
    'Authorization': 'Bearer YOUR_TOKEN',
    'Content-Type': 'application/json',
  },
  body,
});

const data = await response.text();

import requests

body = '''{
  "date": "2026-10-01",
  "rate": "2.3456",
  "from": "USD",
  "to": "EUR"
}'''

response = requests.put(
    'https://firefly.example.com/api/v1/exchange-rates/123',
    data=body.encode('utf-8'),
    headers={
        'X-Trace-Id': '40c71bbb-c676-4f24-83cf-cc725d7d7a00',
        'Authorization': 'Bearer YOUR_TOKEN',
        'Content-Type': 'application/json',
    },
)
print(response.text)

Request Body

{
  "date": "2026-10-01",
  "rate": "2.3456",
  "from": "USD",
  "to": "EUR"
}

{
  "date": "2026-10-01",
  "rate": "2.3456",
  "from": "USD",
  "to": "EUR"
}

{
  "data": {
    "type": "currency_exchange_rates",
    "id": "2",
    "attributes": {
      "created_at": "2026-10-01T00:00:00+00:00",
      "updated_at": "2026-10-01T00:00:00+00:00",
      "from_currency_id": "12",
      "from_currency_name": "Euro",
      "from_currency_code": "EUR",
      "from_currency_symbol": "$",
      "from_currency_decimal_places": 2,
      "to_currency_id": "12",
      "to_currency_name": "EUR",
      "to_currency_code": "EUR",
      "to_currency_symbol": "$",
      "to_currency_decimal_places": 2,
      "rate": "1.10340",
      "date": "2026-10-01T00:00:00+00:00"
    },
    "links": {
      "0": {
        "rel": "self",
        "uri": "/OBJECTS/1"
      },
      "self": "https://demo.firefly-iii.org/api/v1/OBJECTS/1"
    }
  }
}

{
  "message": "Bad Request",
  "exception": "BadRequestHttpException"
}

{
  "message": "Unauthenticated",
  "exception": "AuthenticationException"
}

{
  "message": "Resource not found",
  "exception": "NotFoundHttpException"
}

{
  "message": "The given data was invalid.",
  "errors": {
    "email": [
      "string"
    ],
    "force": [
      "string"
    ],
    "blocked": [
      "string"
    ],
    "field": [
      "string"
    ],
    "role": [
      "string"
    ],
    "blocked_code": [
      "string"
    ],
    "name": [
      "string"
    ],
    "type": [
      "string"
    ],
    "iban": [
      "string"
    ],
    "start": [
      "string"
    ],
    "end": [
      "string"
    ],
    "date": [
      "string"
    ]
  }
}

Body

JSON array or form-data with updated exchange rate information. See the model for the exact specifications.

application/json,application/x-www-form-urlencodedCurrencyExchangeRateUpdate

datestring<date>required

The date to which the exchange rate is applicable.

Example

2026-10-01

ratestringrequired

The exchange rate from the base currency to the destination currency.

Example

2.3456

fromstring | null

The base currency code.

Example

USD

tostring | null

The destination currency code.

Example

EUR

Parameters

idstringrequiredpath

The ID of the currency exchange rate.

Response

200OKCurrencyExchangeRateSingle

Updated exchange rate stored, result in response

Response fields application/vnd.api+json

dataCurrencyExchangeRateReadrequired

Show child attributes

typestringread only

Immutable value

Example

currency_exchange_rates

idstringread only

Example

attributesCurrencyExchangeProperties

Show child attributes

created_atstring<date-time>read only

Example

2026-10-01T00:00:00+00:00

updated_atstring<date-time>read only

Example

2026-10-01T00:00:00+00:00

from_currency_idstringread only

Base currency ID for this exchange rate entry.

Example

from_currency_namestringread only

Base currency name for this exchange rate entry.

Example

Euro

from_currency_codestringread only

Base currency code for this exchange rate entry.

Example

EUR

from_currency_symbolstringread only

Base currency symbol for this exchange rate entry.

Example

from_currency_decimal_placesinteger<int32>read only

Base currency decimal places for this exchange rate entry.

Example

to_currency_idstringread only

Destination currency ID for this exchange rate entry.

Example

to_currency_namestringread only

Destination currency name for this exchange rate entry.

Example

EUR

to_currency_codestringread only

Destination currency code for this exchange rate entry.

Example

EUR

to_currency_symbolstringread only

Destination currency symbol for this exchange rate entry.

Example

to_currency_decimal_placesinteger<int32>read only

Destination currency decimal places for this exchange rate entry.

Example

ratestringread only

The actual exchange rate. How many 'to' currency will you get for 1 'from' currency?

Example

1.10340

datestring<date-time>read only

Date and time of the exchange rate.

Example

2026-10-01T00:00:00+00:00

linksObjectLink

Show child attributes

0object

Show child attributes

relstring

Example

self

uristring

Example

/OBJECTS/1

selfstring<uri>

Example

https://demo.firefly-iii.org/api/v1/OBJECTS/1

400Bad RequestBadRequestResponse

Bad request

Response fields application/json

messagestring

Example

Bad Request

exceptionstring

Example

BadRequestHttpException

401UnauthorizedUnauthenticatedResponse

Unauthenticated

Response fields application/json

messagestring

Example

Unauthenticated

exceptionstring

Example

AuthenticationException

404Not FoundNotFoundResponse

Page not found

Response fields application/json

messagestring

Example

Resource not found

exceptionstring

Example

NotFoundHttpException

422Unprocessable EntityValidationErrorResponse

Validation error. The body will have the exact details.

Response fields application/json

messagestring

Example

The given data was invalid.

errorsobject

Show child attributes

emailArray<string>

forceArray<string>

blockedArray<string>

fieldArray<string>

roleArray<string>

blocked_codeArray<string>

nameArray<string>

typeArray<string>

ibanArray<string>

startArray<string>

endArray<string>

dateArray<string>

Authorization

firefly_iii_authoauth2

OAuth2 authorization code flow. Create a client on your installation's /profile page; it authorizes at /oauth/authorize and issues tokens at /oauth/token there. The URLs below are the demo site's. How to use the API walks through it.

local_bearer_authhttp (bearer)

A Personal Access Token, sent as a bearer token. Create one on your installation under Options > Profile > OAuth > Personal Access Tokens.