# Log Logged Model Params

Launch stage: GA

`POST /api/2.0/mlflow/logged-models/{model_id}/params`

Logs params for a logged model. A param is a key-value pair (string key, string value). Examples include
 hyperparameters used for ML model training. A param can be logged only once for a logged model, and
 attempting to overwrite an existing param with a different value will result in an error

API scopes: mlflow

## Path parameters

- `model_id` (string, optional)
  The ID of the logged model to log params for.

## Request body

- `params` (array of object, optional)
  Parameters to attach to the model.
  - `key` (string, optional)
    The key identifying this param.
  - `value` (string, optional)
    The value of this param.

## Response

```json
{}
```