Train | API Reference | Label Studio

After you add an ML backend, call this API with the ML backend ID to start training with already-labeled tasks.

Get the ML backend ID by listing the ML backends for a project.

After you add an ML backend, call this API with the ML backend ID to start training with already-labeled tasks. Get the ML backend ID by [listing the ML backends for a project](https://labelstud.io/api/#operation/api_ml_list).

Authentication

AuthorizationToken

The token (or API key) must be passed as a request header. You can find your user token on the User Account page in Label Studio. Example:

curl https://label-studio-host/api/projects -H “Authorization: Token [your-token]”

Path parameters

idintegerRequired

A unique integer value identifying this ML backend.

Request

This endpoint expects an object.

use_ground_truthbooleanOptional

Whether to include ground truth annotations in training

Response

Training has successfully started.

Errors

500

Internal Server Error

$	curl -X POST http://localhost:8000/api/ml/1/train \
>	-H "Authorization: Token <api_key>" \
>	-H "Content-Type: application/json" \
>	-d '{}'