Managing Data Sources
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The Fitness REST API lets you create, obtain, and update data sources. A data source represents
a unique source of sensor data. You use data sources to insert fitness data into the fitness
store, and you can retrieve fitness data inserted by a particular data source.
Data sources are represented by the Users.dataSources
resource.
Create a data source
This example demonstrates how to create a new data source named "MyDataSource"
that provides step count increments.
- HTTP method
- POST
- Request URL
https://www.googleapis.com/fitness/v1/users/me/dataSources- Request body
{
"dataStreamName": "MyDataSource",
"type": "derived",
"application": {
"detailsUrl": "http://example.com",
"name": "Foo Example App",
"version": "1"
},
"dataType": {
"field": [
{
"name": "steps",
"format": "integer"
}
],
"name": "com.google.step_count.delta"
},
"device": {
"manufacturer": "Example Manufacturer",
"model": "ExampleTablet",
"type": "tablet",
"uid": "1000001",
"version": "1.0"
}
}
- Response
If the data source is created successfully, the response is a 200 OK status
code. The response body contains a JSON representation of the data source,
including a datasource.dataStreamId
property that you can use as the data source ID for subsequent requests.
- Curl command
$ curl --header "Authorization: Bearer ya29.yourtokenvalue" -X POST \
--header "Content-Type: application/json;encoding=utf-8" -d @createds.json \
"https://www.googleapis.com/fitness/v1/users/me/dataSources"
Get a particular data source
This example demonstrates how to retrieve the data source ("MyDataSource")
that you created in the previous example. When you create a new data source,
the dataStreamId includes a unique identifier (shown as "1234567890" in these
examples). This is your developer project number, and it will be the same for
all requests made using that particular developer account. Be sure to use the
dataStreamId from the data source you created.
- HTTP method
- GET
- Request URL
https://www.googleapis.com/fitness/v1/users/me/dataSources/derived:com.google.step_count.delta:1234567890:Example%20Manufacturer:ExampleTablet:1000001:MyDataSource- Request body
- None
- Response
- If the data source exists, the response is a
200 OK status code. The response body contains a
JSON representation of the data source.
- Curl command
$ curl --header "Authorization: Bearer ya29.yourtokenvalue" -X GET
--header "Content-Type: application/json;encoding=utf-8"
"https://www.googleapis.com/fitness/v1/users/me/dataSources/derived:com.google.step_count.delta:1234567890:Example%20Manufacturer:ExampleTablet:1000001:MyDataSource"
Get aggregated data
This example demonstrates how to query a specific data source for aggregated
data, in this case estimated_steps, which is the data source used to show
step count in the Google Fit app. Note that timestamps in the JSON request
body are in milliseconds.
- HTTP method
- POST
- Request URL
https://www.googleapis.com/fitness/v1/users/me/dataset:aggregate- Request body
{
"aggregateBy": [{
"dataSourceId":
"derived:com.google.step_count.delta:com.google.android.gms:estimated_steps"
}],
"bucketByTime": { "durationMillis": 86400000 },
"startTimeMillis": 1454284800000,
"endTimeMillis": 1455062400000
}
- Response
If the data source(s) exist, the response is a 200 OK status code. The
response body contains a JSON representation of the data source.
- Curl command
$ curl --header "Authorization: Bearer ya29.yourtokenvalue" -X POST \
--header "Content-Type: application/json;encoding=utf-8" -d @aggregate.json \
"https://www.googleapis.com/fitness/v1/users/me/dataset:aggregate"
Update a data source
This example demonstrates how to update the name and device version for a data
source.
- HTTP method
- PUT
- Request URL
https://www.googleapis.com/fitness/v1/users/me/dataSources/derived:com.google.step_count.delta:1234567890:Example%20Manufacturer:ExampleTablet:1000001:MyDataSource- Request body
{
"dataStreamId": "derived:com.google.step_count.delta:1234567890:Example Manufacturer:ExampleTablet:1000001:MyDataSource",
"dataStreamName": "MyDataSource",
"type": "derived",
"application": {
"detailsUrl": "http://example.com",
"name": "Foo Example App",
"version": "1"
},
"dataType": {
"field": [
{
"name": "steps",
"format": "integer"
}
],
"name": "com.google.step_count.delta"
},
"device": {
"manufacturer": "Example Manufacturer",
"model": "ExampleTablet",
"type": "tablet",
"uid": "1000001",
"version": "2.0"
}
}
- Response
If the data source is updated successfully, the response is a 200 OK status
code. The response body contains a JSON representation of the data source.
- Curl command
$ curl --header "Authorization: Bearer ya29.yourtokenvalue" -X PUT \
--header "Content-Type: application/json;encoding=utf-8" -d @updateds.json \
"https://www.googleapis.com/fitness/v1/users/me/dataSources/derived:com.google.step_count.delta:1234567890:Example%20Manufacturer:ExampleTablet:1000001:MyDataSource"
Delete a data source
This example demonstrates how to delete a data source.
- HTTP method
- DELETE
- Request URL
https://www.googleapis.com/fitness/v1/users/me/dataSources/derived:com.google.step_count.delta:1234567890:Example%20Manufacturer:ExampleTablet:1000001:MyDataSource- Request body
- None
- Response
- If the data source is deleted successfully, the response is a
200 OK status
code. The response body contains a JSON representation of the data source that
was deleted.
- Curl command
$ curl --header "Authorization: Bearer ya29.yourtokenvalue" -X DELETE \
--header "Content-Type: application/json;encoding=utf-8" \
"https://www.googleapis.com/fitness/v1/users/me/dataSources/derived:com.google.step_count.delta:1234567890:Example%20Manufacturer:ExampleTablet:1000001:MyDataSource"
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Last updated 2025-08-28 UTC.
[null,null,["Last updated 2025-08-28 UTC."],[[["\u003cp\u003eThe Fitness REST API allows you to manage data sources, which represent unique sources of sensor data for inserting and retrieving fitness data within the Fitness Store.\u003c/p\u003e\n"],["\u003cp\u003eYou can create, retrieve, update, and delete data sources using the API with specific HTTP methods and request URLs.\u003c/p\u003e\n"],["\u003cp\u003eData sources can be identified using a unique \u003ccode\u003edataStreamId\u003c/code\u003e, including your developer project number, for subsequent interactions.\u003c/p\u003e\n"],["\u003cp\u003eThe API supports aggregating data from specific data sources within defined time ranges, like retrieving daily step counts.\u003c/p\u003e\n"],["\u003cp\u003eData source management should follow responsible data handling practices as outlined in the Google Fit guidelines for user privacy and security.\u003c/p\u003e\n"]]],[],null,["# Managing Data Sources\n\nThe Fitness REST API lets you create, obtain, and update data sources. A data source represents\na unique source of sensor data. You use data sources to insert fitness data into the fitness\nstore, and you can retrieve fitness data inserted by a particular data source.\n\nData sources are represented by the [`Users.dataSources`](/fit/rest/v1/reference/users/dataSources)\nresource.\n| **Important:** For best practices when managing user data, see [Responsible use of Google Fit](/fit/overview#responsible_use_of_google_fit).\n\nCreate a data source\n--------------------\n\nThis example demonstrates how to create a new data source named \"MyDataSource\"\nthat provides step count increments.\n\nHTTP method\n: POST\n\nRequest URL\n: `https://www.googleapis.com/fitness/v1/users/me/dataSources`\n\nRequest body\n:\n\n {\n \"dataStreamName\": \"MyDataSource\",\n \"type\": \"derived\",\n \"application\": {\n \"detailsUrl\": \"http://example.com\",\n \"name\": \"Foo Example App\",\n \"version\": \"1\"\n },\n \"dataType\": {\n \"field\": [\n {\n \"name\": \"steps\",\n \"format\": \"integer\"\n }\n ],\n \"name\": \"com.google.step_count.delta\"\n },\n \"device\": {\n \"manufacturer\": \"Example Manufacturer\",\n \"model\": \"ExampleTablet\",\n \"type\": \"tablet\",\n \"uid\": \"1000001\",\n \"version\": \"1.0\"\n }\n }\n\nResponse\n\n: If the data source is created successfully, the response is a `200 OK` status\n code. The response body contains a JSON representation of the data source,\n including a [`datasource.dataStreamId`](/fit/rest/v1/reference/users/dataSources#dataStreamId)\n property that you can use as the data source ID for subsequent requests.\n\nCurl command\n:\n\n ```\n $ curl --header \"Authorization: Bearer ya29.yourtokenvalue\" -X POST \\\n --header \"Content-Type: application/json;encoding=utf-8\" -d @createds.json \\\n \"https://www.googleapis.com/fitness/v1/users/me/dataSources\"\n ```\n\nGet a particular data source\n----------------------------\n\nThis example demonstrates how to retrieve the data source (\"MyDataSource\")\nthat you created in the previous example. When you create a new data source,\nthe `dataStreamId` includes a unique identifier (shown as \"1234567890\" in these\nexamples). This is your developer project number, and it will be the same for\nall requests made using that particular developer account. Be sure to use the\n`dataStreamId` from the data source you created.\n\nHTTP method\n: GET\n\nRequest URL\n: `https://www.googleapis.com/fitness/v1/users/me/dataSources/`**derived:com.google.step_count.delta:\u003cvar class=\"apiparam\" translate=\"no\"\u003e1234567890\u003c/var\u003e:Example%20Manufacturer:ExampleTablet:1000001:MyDataSource**\n\nRequest body\n: None\n\nResponse\n: If the data source exists, the response is a `200 OK` status code. The response body contains a\n JSON representation of the data source.\n\nCurl command\n:\n\n ```\n $ curl --header \"Authorization: Bearer ya29.yourtokenvalue\" -X GET \n\n --header \"Content-Type: application/json;encoding=utf-8\" \n\n \"https://www.googleapis.com/fitness/v1/users/me/dataSources/derived:com.google.step_count.delta:1234567890:Example%20Manufacturer:ExampleTablet:1000001:MyDataSource\"\n ```\n\nGet aggregated data\n-------------------\n\nThis example demonstrates how to query a specific data source for aggregated\ndata, in this case `estimated_steps`, which is the data source used to show\nstep count in the Google Fit app. Note that timestamps in the JSON request\nbody are in milliseconds.\n\nHTTP method\n: POST\n\nRequest URL\n: `https://www.googleapis.com/fitness/v1/users/me/dataset:aggregate`\n\nRequest body\n:\n\n {\n \"aggregateBy\": [{\n \"dataSourceId\":\n \"derived:com.google.step_count.delta:com.google.android.gms:estimated_steps\"\n }],\n \"bucketByTime\": { \"durationMillis\": 86400000 },\n \"startTimeMillis\": 1454284800000,\n \"endTimeMillis\": 1455062400000\n }\n\nResponse\n\n: If the data source(s) exist, the response is a `200 OK` status code. The\n response body contains a JSON representation of the data source.\n\nCurl command\n:\n\n ```\n $ curl --header \"Authorization: Bearer ya29.yourtokenvalue\" -X POST \\\n --header \"Content-Type: application/json;encoding=utf-8\" -d @aggregate.json \\\n \"https://www.googleapis.com/fitness/v1/users/me/dataset:aggregate\"\n ```\n\nUpdate a data source\n--------------------\n\nThis example demonstrates how to update the name and device version for a data\nsource.\n\nHTTP method\n: PUT\n\nRequest URL\n: `https://www.googleapis.com/fitness/v1/users/me/dataSources/`**derived:com.google.step_count.delta:\u003cvar class=\"apiparam\" translate=\"no\"\u003e1234567890\u003c/var\u003e:Example%20Manufacturer:ExampleTablet:1000001:MyDataSource**\n\nRequest body\n:\n\n {\n \"dataStreamId\": \"derived:com.google.step_count.delta:1234567890:Example Manufacturer:ExampleTablet:1000001:MyDataSource\",\n \"dataStreamName\": \"MyDataSource\",\n \"type\": \"derived\",\n \"application\": {\n \"detailsUrl\": \"http://example.com\",\n \"name\": \"Foo Example App\",\n \"version\": \"1\"\n },\n \"dataType\": {\n \"field\": [\n {\n \"name\": \"steps\",\n \"format\": \"integer\"\n }\n ],\n \"name\": \"com.google.step_count.delta\"\n },\n \"device\": {\n \"manufacturer\": \"Example Manufacturer\",\n \"model\": \"ExampleTablet\",\n \"type\": \"tablet\",\n \"uid\": \"1000001\",\n \"version\": \"2.0\"\n }\n }\n\nResponse\n\n: If the data source is updated successfully, the response is a `200 OK` status\n code. The response body contains a JSON representation of the data source.\n\nCurl command\n:\n\n ```\n $ curl --header \"Authorization: Bearer ya29.yourtokenvalue\" -X PUT \\\n --header \"Content-Type: application/json;encoding=utf-8\" -d @updateds.json \\\n \"https://www.googleapis.com/fitness/v1/users/me/dataSources/derived:com.google.step_count.delta:1234567890:Example%20Manufacturer:ExampleTablet:1000001:MyDataSource\"\n ```\n\nDelete a data source\n--------------------\n\nThis example demonstrates how to delete a data source.\n\nHTTP method\n: DELETE\n\nRequest URL\n: `https://www.googleapis.com/fitness/v1/users/me/dataSources/`**derived:com.google.step_count.delta:\u003cvar class=\"apiparam\" translate=\"no\"\u003e1234567890\u003c/var\u003e:Example%20Manufacturer:ExampleTablet:1000001:MyDataSource**\n\nRequest body\n: None\n\nResponse\n: If the data source is deleted successfully, the response is a `200 OK` status\n code. The response body contains a JSON representation of the data source that\n was deleted.\n\nCurl command\n:\n\n ```\n $ curl --header \"Authorization: Bearer ya29.yourtokenvalue\" -X DELETE \\\n --header \"Content-Type: application/json;encoding=utf-8\" \\\n \"https://www.googleapis.com/fitness/v1/users/me/dataSources/derived:com.google.step_count.delta:1234567890:Example%20Manufacturer:ExampleTablet:1000001:MyDataSource\"\n ```"]]
