Get a single tag.

GET

https://firefly.example.com/api/v1/tags/{tag}

Get a single tag.

curl -X GET 'https://firefly.example.com/api/v1/tags/groceries' \
  -H 'X-Trace-Id: 40c71bbb-c676-4f24-83cf-cc725d7d7a00' \
  -H 'Authorization: Bearer YOUR_TOKEN'

const response = await fetch('https://firefly.example.com/api/v1/tags/groceries', {
  method: 'GET',
  headers: {
    'X-Trace-Id': '40c71bbb-c676-4f24-83cf-cc725d7d7a00',
    'Authorization': 'Bearer YOUR_TOKEN',
  },
});

const data = await response.text();

import requests

response = requests.get(
    'https://firefly.example.com/api/v1/tags/groceries',
    headers={
        'X-Trace-Id': '40c71bbb-c676-4f24-83cf-cc725d7d7a00',
        'Authorization': 'Bearer YOUR_TOKEN',
    },
)
print(response.text)

{
  "data": {
    "type": "tags",
    "id": "2",
    "attributes": {
      "created_at": "2026-10-01T00:00:00+00:00",
      "updated_at": "2026-10-01T00:00:00+00:00",
      "tag": "expensive",
      "date": "2026-10-01",
      "description": "Tag for expensive stuff",
      "latitude": 51.983333,
      "longitude": 5.916667,
      "zoom_level": 6
    },
    "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": "Internal Exception",
  "exception": "InternalException"
}

Parameters

limitinteger<int32>query

Number of items per page. The default pagination is per 50 items.

pageinteger<int32>query

Page number. The default pagination is per 50 items.

tagstringrequiredpath

Either the tag itself or the tag ID. If you use the tag itself, and it contains international (non-ASCII) characters, your mileage may vary.

Response

200OKTagSingle

The requested tag

Response fields application/vnd.api+json

dataTagReadrequired

Show child attributes

typestringrequired

Immutable value

Example

tags

idstringrequired

Example

attributesTagModelrequired

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

tagstringrequired

The tag

Example

expensive

datestring<date> | null

The date to which the tag is applicable.

Example

2026-10-01

descriptionstring | null

Example

Tag for expensive stuff

latitudenumber<double> | null

Latitude of the tag's location, if applicable. Can be used to draw a map.

Example

51.983333

longitudenumber<double> | null

Latitude of the tag's location, if applicable. Can be used to draw a map.

Example

5.916667

zoom_levelinteger<int32> | null

Zoom level for the map, if drawn. This to set the box right. Unfortunately this is a proprietary value because each map provider has different zoom levels.

Example

linksObjectLinkrequired

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

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.