---
title: "Create an LLM Observability dataset"
method: POST
path: "/api/v2/llm-obs/v1/{project_id}/datasets"
tags: ["LLM Observability"]
---

# Create an LLM Observability dataset

`POST /api/v2/llm-obs/v1/{project_id}/datasets`

Create a new LLM Observability dataset within the specified project.

## Path parameters

- `project_id` string, required

## Request body

- LLMObsDatasetRequest — Request to create an LLM Observability dataset.
  - `data` LLMObsDatasetDataRequest, required — Data object for creating an LLM Observability dataset.
    - `attributes` LLMObsDatasetDataAttributesRequest, required — Attributes for creating an LLM Observability dataset.
      - `description` string — Description of the dataset.
      - `metadata` object — Arbitrary metadata associated with the dataset.
      - `name` string, required — Name of the dataset.
    - `type` 'datasets', required — Resource type of an LLM Observability dataset.

## Response `200`

OK

- LLMObsDatasetResponse — Response containing a single LLM Observability dataset.
  - `data` LLMObsDatasetDataResponse, required — Data object for an LLM Observability dataset.
    - `attributes` LLMObsDatasetDataAttributesResponse, required — Attributes of an LLM Observability dataset.
      - `created_at` string, date-time, required — Timestamp when the dataset was created.
      - `current_version` integer, required — Current version number of the dataset.
      - `description` string, nullable, required — Description of the dataset.
      - `metadata` object, nullable, required — Arbitrary metadata associated with the dataset.
      - `name` string, required — Name of the dataset.
      - `updated_at` string, date-time, required — Timestamp when the dataset was last updated.
    - `id` string, required — Unique identifier of the dataset.
    - `type` 'datasets', required — Resource type of an LLM Observability dataset.

## Other responses

- `201` — Created
- `400` — Bad Request
- `401` — Unauthorized
- `403` — Forbidden
- `404` — Not Found
- `429` — Too many requests

---

[API](https://skmtc.net/datadog/apis/api-v2.md) · [All operations](https://skmtc.net/datadog/apis/api-v2/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/datadog/api-v2/revisions/da68bf029e4c/schema)