Budgets

Store new budget limit.

POST

https://firefly.example.com/api/v1/budgets/{id}/limits

Store a new budget limit under this budget.

curl -X POST 'https://firefly.example.com/api/v1/budgets/123/limits' \
  -H 'X-Trace-Id: 40c71bbb-c676-4f24-83cf-cc725d7d7a00' \
  -H 'Authorization: Bearer YOUR_TOKEN' \
  -H 'Content-Type: application/json' \
  --data-raw '{
  "currency_id": "5",
  "currency_code": "EUR",
  "start": "2026-10-01",
  "end": "2026-10-31",
  "amount": "123.45",
  "notes": "Some example notes",
  "fire_webhooks": true
}'

const body = `{
  "currency_id": "5",
  "currency_code": "EUR",
  "start": "2026-10-01",
  "end": "2026-10-31",
  "amount": "123.45",
  "notes": "Some example notes",
  "fire_webhooks": true
}`;

const response = await fetch('https://firefly.example.com/api/v1/budgets/123/limits', {
  method: 'POST',
  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 = '''{
  "currency_id": "5",
  "currency_code": "EUR",
  "start": "2026-10-01",
  "end": "2026-10-31",
  "amount": "123.45",
  "notes": "Some example notes",
  "fire_webhooks": true
}'''

response = requests.post(
    'https://firefly.example.com/api/v1/budgets/123/limits',
    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

{
  "currency_id": "5",
  "currency_code": "EUR",
  "start": "2026-10-01",
  "end": "2026-10-31",
  "amount": "123.45",
  "notes": "Some example notes",
  "fire_webhooks": true
}

{
  "currency_id": "5",
  "currency_code": "EUR",
  "start": "2026-10-01",
  "end": "2026-10-31",
  "amount": "123.45",
  "notes": "Some example notes",
  "fire_webhooks": true
}

{
  "data": {
    "type": "budget_limits",
    "id": "2",
    "attributes": {
      "created_at": "2026-10-01T00:00:00+00:00",
      "updated_at": "2026-10-01T00:00:00+00:00",
      "start": "2026-10-01T00:00:00+00:00",
      "end": "2026-10-31T23:59:59+00:00",
      "budget_id": "23",
      "object_has_currency_setting": true,
      "currency_id": "5",
      "currency_name": "Euro",
      "currency_code": "EUR",
      "currency_symbol": "$",
      "currency_decimal_places": 2,
      "primary_currency_id": "5",
      "primary_currency_name": "Euro",
      "primary_currency_code": "EUR",
      "primary_currency_symbol": "$",
      "primary_currency_decimal_places": 2,
      "amount": "123.45",
      "pc_amount": "123.45",
      "period": "monthly",
      "spent": [
        {
          "currency_id": "5",
          "currency_code": "USD",
          "currency_symbol": "$",
          "currency_decimal_places": 2,
          "sum": "123.45"
        }
      ],
      "pc_spent": [
        {
          "currency_id": "5",
          "currency_code": "USD",
          "currency_symbol": "$",
          "currency_decimal_places": 2,
          "sum": "123.45"
        }
      ],
      "notes": "Some example notes"
    }
  }
}

{
  "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"
    ]
  }
}

{
  "message": "Internal Exception",
  "exception": "InternalException"
}

Body

JSON array or key=value pairs with the necessary budget information. See the model for the exact specifications.

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

currency_idstring

Use either currency_id or currency_code. Defaults to the user's primary currency.

Example

currency_codestring

Use either currency_id or currency_code. Defaults to the user's primary currency.

Example

EUR

startstring<date>required

Start date of the budget limit.

Example

2026-10-01

endstring<date>required

End date of the budget limit.

Example

2026-10-31

amountstring<amount>required

Example

123.45

notesstring | null

Some notes for this specific budget limit.

Example

Some example notes

fire_webhooksbooleantrue

Whether or not to fire the webhooks that are related to this event.

Example

true

Parameters

X-Trace-Idstring<uuid>header

Unique identifier associated with this request.

idstringrequiredpath

The ID of the budget.

Response

200OKBudgetLimitSingle

New budget limit stored, result in response.

Response fields application/vnd.api+json

dataBudgetLimitReadrequired

Show child attributes

typestringrequired

Immutable value

Example

budget_limits

idstringrequired

Example

attributesBudgetLimitPropertiesrequired

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

startstring<date-time>

Start date of the budget limit.

Example

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

endstring<date-time>

End date of the budget limit.

Example

2026-10-31T23:59:59+00:00

budget_idstringread only

The budget ID of the associated budget.

Example

object_has_currency_settingbooleanread only

Indicates whether the object has a currency setting. If false, the object uses the administration's primary currency.

Example

true

currency_idstring

The currency ID of the currency associated with this object.

Example

currency_namestring

The currency name of the currency associated with this object.

Example

Euro

currency_codestring

The currency code of the currency associated with this object.

Example

EUR

currency_symbolstringread only

Example

currency_decimal_placesinteger<int32>read only

Example

primary_currency_idstringread only

The currency ID of the administration's primary currency.

Example

primary_currency_namestringread only

The currency name of the administration's primary currency.

Example

Euro

primary_currency_codestringread only

The currency code of the administration's primary currency.

Example

EUR

primary_currency_symbolstringread only

The currency symbol of the administration's primary currency.

Example

primary_currency_decimal_placesinteger<int32>read only

The currency decimal places of the administration's primary currency.

Example

amountstring<amount>

Example

123.45

pc_amountstring<amount> | nullread only

The amount of this budget limit in the user's primary currency, if the original amount is in a different currency.

Example

123.45

periodstring | nullread only

Period of the budget limit. Only used when auto-generated by auto-budget.

Example

monthly

spentArray<ArrayEntryWithCurrencyAndSum>read only

Amount(s) spent in the currencies in the database for this budget limit.

Show child attributes

currency_idstring

Example

currency_codestring

Example

USD

currency_symbolstring

Example

currency_decimal_placesinteger<int32>

Number of decimals supported by the currency

Example

sumstring<amount>

The amount earned, spent or transferred.

Example

123.45

pc_spentArray<ArrayEntryWithCurrencyAndSum>read only

Amount(s) spent in the primary currency in the database for this budget limit.

Show child attributes

currency_idstring

Example

currency_codestring

Example

USD

currency_symbolstring

Example

currency_decimal_placesinteger<int32>

Number of decimals supported by the currency

Example

sumstring<amount>

The amount earned, spent or transferred.

Example

123.45

notesstring | null

Some notes for this specific budget limit.

Example

Some example notes

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>

500Internal Server ErrorInternalExceptionResponse

Internal exception

Response fields application/json

messagestring

Example

Internal Exception

exceptionstring

Example

InternalException

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.