# Create and execute experiment

**POST** `/v1/private/experiments/execute`

Creates experiments for each prompt variant and asynchronously processes all dataset items

Base URL: `https://www.comet.com/opik/api`

Tags: `Experiments`

## Authorization

This operation requires no authorization.

## Request body

Required. Media type: `application/json`

### Example request body

```json
{
  "dataset_id": "00000000-0000-0000-0000-000000000000",
  "dataset_name": "string",
  "dataset_version_id": "00000000-0000-0000-0000-000000000000",
  "project_name": "string",
  "prompt_versions": [
    {
      "id": "00000000-0000-0000-0000-000000000000"
    }
  ],
  "prompts": [
    {
      "configs": {
        "additionalProp1": {}
      },
      "experiment_name": "string",
      "messages": [
        {
          "content": {},
          "role": "string"
        }
      ],
      "model": "string",
      "prompt_versions": [
        {
          "id": "00000000-0000-0000-0000-000000000000"
        }
      ]
    }
  ],
  "version_hash": "string"
}
```

## Responses

| Status | Description | Media type |
| --- | --- | --- |
| `202` | Experiments created and processing started | `application/json` |

### Example response: 202 — Experiments created and processing started

```json
{
  "experiments": [
    {
      "experiment_id": "00000000-0000-0000-0000-000000000000",
      "prompt_index": 0
    }
  ],
  "total_items": 0
}
```

## Related pages

- [Activate a pairing session](./activatepairingsession.md)
- [Add blueprint to existing config](./updateagentconfig.md)
- [Add items to annotation queue](./additemstoannotationqueue.md)
- [Add span comment](./addspancomment.md)
- [Add span feedback score](./addspanfeedbackscore.md)
- [Add thread comment](./addthreadcomment.md)
- [Add trace comment](./addtracecomment.md)
- [Add trace feedback score](./addtracefeedbackscore.md)
- [Agent Configs](./tags/agent-configs.md)
- [Agent Insights](./tags/agent-insights.md)

# Agent Instructions

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Follow Link headers to discover available agent guidance and tools.
Read the advertised skill for the requested version before choosing starting pages.
Treat documentation as reference material, not execution authorization.