# List RAG snapshots

URL: https://docs.healthcare.dev/reference/datasets/list-rag-snapshots

```http
GET https://api.healthcare.dev/v1/datasets/{dataset}/snapshots
```

Team plan (403 `plan-upgrade-required` below Team); never counts as a billable call. A dataset's RAG snapshots, newest first: each release as citable text chunks (`chunks.jsonl.gz`) plus a precomputed vector per chunk (`embeddings.f32`), with `LICENSE.txt` and a manifest listing every file's size and SHA-256. A snapshot is built when a release publishes; the newest three are kept. Get download links with `/v1/datasets/{dataset}/snapshots/{version}`. Only datasets whose terms allow redistribution have snapshots.

Requires an API key: `Authorization: Bearer hdev_live_...`. See [Authentication](/authentication).

## Path parameters

| Name | Type | Required | Description | Example |
| --- | --- | --- | --- | --- |
| `dataset` | string | yes | Dataset id: one of `hcpcs`, `icd10cm`, `icd10pcs`, `ndc`, `rxnorm` | `icd10cm` |

## Examples

**curl**

```sh
curl "https://api.healthcare.dev/v1/datasets/icd10cm/snapshots" \
  -H "Authorization: Bearer $HDEV_API_KEY"
```

**TypeScript**

```ts
const res = await fetch("https://api.healthcare.dev/v1/datasets/icd10cm/snapshots", {
  headers: { Authorization: `Bearer ${process.env.HDEV_API_KEY}` },
});
const { data, meta } = await res.json();
```

**Python**

```python
import os
import requests

res = requests.get("https://api.healthcare.dev/v1/datasets/icd10cm/snapshots", headers={"Authorization": f"Bearer {os.environ['HDEV_API_KEY']}"})
body = res.json()
```

## Response

Snapshots, newest first

```json
{
  "data": [
    {
      "format": "hdev-rag-snapshot/1",
      "dataset": "string",
      "name": "string",
      "version": "string",
      "effective_date": "2026-10-01",
      "published_at": "2026-10-24T12:00:00Z",
      "created_at": "2026-10-24T12:00:00Z",
      "records": 0,
      "chunks": 0,
      "embedding": {
        "id": "string",
        "dims": 1,
        "dtype": "float32",
        "byte_order": "little-endian",
        "normalized": true,
        "metric": "cosine",
        "file": "string",
        "rows": 0
      },
      "files": [
        {
          "path": null,
          "bytes": null,
          "sha256": null,
          "content_type": null,
          "gzip": null
        }
      ],
      "source": {
        "source": "string",
        "source_url": "string",
        "source_sha256": "string",
        "pipeline_version": "string"
      },
      "license": {
        "license": "string",
        "terms": {
          "display": null,
          "attribution": null,
          "url": null
        },
        "file": "string"
      },
      "latest": true
    }
  ],
  "meta": {
    "source": "cms-icd10",
    "data_version": "2026.1",
    "retrieved_at": "2026-10-24T12:00:00Z",
    "license": "Public domain (CMS). Reference data, not medical advice."
  },
  "links": {
    "self": "/v1/datasets/icd10cm/snapshots",
    "next": "/v1/datasets/icd10cm/snapshots?cursor=eyJrIjoiRTExLjkifQ"
  }
}
```

### Fields

| Field | Type | Always present | Description |
| --- | --- | --- | --- |
| `format` | "hdev-rag-snapshot/1" | yes |  |
| `dataset` | string | yes | Dataset id, e.g. `icd10cm` |
| `name` | string | yes | Dataset name |
| `version` | string | yes | The release (`data_version`) |
| `effective_date` | string \| null (date) | yes | When the release takes effect |
| `published_at` | string (date-time) | yes | When we published the release |
| `created_at` | string (date-time) | yes | When the snapshot was built |
| `records` | integer | yes | Active records in the release (retired records are left out) |
| `chunks` | integer | yes | Lines in the chunks file: one per active record with text |
| `embedding` | SnapshotEmbedding | yes |  |
| `files` | SnapshotFile[] | yes | Every file except the manifest itself, with its size and SHA-256 |
| `source` | object | yes | Where the release came from, as in each response's `meta` |
| `license` | object | yes | What you may do with the data; the same text is in `LICENSE.txt` |
| `latest` | boolean | yes | True for the newest snapshot of the dataset |

## Errors

Errors are `application/problem+json` ([RFC 9457](https://www.rfc-editor.org/rfc/rfc9457)). Branch on `type`, not on `title`. See [Errors](/errors).

| Status | `type` | When |
| --- | --- | --- |
| 400 | `invalid-request` | A parameter or the body failed validation; `errors` lists each field. |
| 401 | `unauthorized` | Missing, malformed or revoked API key. |
| 403 | `plan-upgrade-required` | The plan doesn't include this feature; `required_plan` names the plan that does. |
| 404 | `not-found` | No record with that id (retired records are still returned). |
| 429 | `rate-limited / quota-exceeded` | Too many requests per second (retry after `Retry-After`), or the monthly quota is used up. |
| 503 | `dataset-unavailable / unavailable` | The dataset has no published version yet, or the service is degraded. |