> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fastino.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# List training checkpoints

> List the checkpoints saved for a Fastino training job.

`GET /v1/training-jobs/{job_id}/checkpoints`

Returns checkpoints visible for a training job.

## Request

<ParamField header="X-API-Key" type="string" required>
  Your Fastino API key.
</ParamField>

<ParamField path="job_id" type="string" required>
  Training-job UUID.
</ParamField>

<RequestExample>
  ```bash cURL theme={null}
  curl https://api.fastino.ai/v1/training-jobs/YOUR_TRAINING_JOB_ID/checkpoints \
    -H "X-API-Key: $FASTINO_API_KEY"
  ```
</RequestExample>

## Response

<ResponseField name="success" type="boolean">
  Whether the request succeeded.
</ResponseField>

<ResponseField name="checkpoints" type="object[]">
  Saved checkpoints. Each can include `id`, `job_id`, `epoch`, `step`, loss values, `accuracy`, `learning_rate`, GPU-memory values, `checkpoint_path`, `is_deployable`, `is_best`, `is_final`, and timestamps.
</ResponseField>

<ResponseField name="count" type="integer">
  Number of checkpoints returned.
</ResponseField>

<ResponseExample>
  ```json Response theme={null}
  {
    "success": true,
    "checkpoints": [
      {
        "id": "CHECKPOINT_ID",
        "job_id": "YOUR_TRAINING_JOB_ID",
        "epoch": 5,
        "step": 500,
        "training_loss": 0.12,
        "validation_loss": 0.18,
        "is_deployable": true,
        "is_best": true,
        "is_final": true,
        "created_at": "2026-09-22T20:30:00Z",
        "updated_at": "2026-09-22T20:30:00Z"
      }
    ],
    "count": 1
  }
  ```
</ResponseExample>

An unknown or inaccessible job returns `404`.