# Dataset catalog

URL: https://docs.healthcare.dev/reference/datasets/dataset-catalog

```http
GET https://api.healthcare.dev/v1/datasets
```

Every published dataset with its current version, publish time, expected cadence and freshness.

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

## Examples

**curl**

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

**TypeScript**

```ts
const res = await fetch("https://api.healthcare.dev/v1/datasets", {
  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", headers={"Authorization": f"Bearer {os.environ['HDEV_API_KEY']}"})
body = res.json()
```

## Response

Datasets

```json
{
  "data": [
    {
      "id": "icd10cm",
      "name": "ICD-10-CM",
      "source": "cms-icd10",
      "license": "Public domain (CMS)",
      "current_version": "2026.1",
      "published_at": "2026-10-01T06:00:00Z",
      "expected_cadence_days": 365,
      "fresh": 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",
    "next": "/v1/datasets?cursor=eyJrIjoiRTExLjkifQ"
  }
}
```

### Fields

| Field | Type | Always present | Description |
| --- | --- | --- | --- |
| `id` | string | yes | Dataset id, e.g. `nppes`, `icd10cm` |
| `name` | string | yes |  |
| `source` | string | yes |  |
| `license` | string | yes |  |
| `source_url` | string \| null (uri) | yes | Upstream page the data is published on |
| `current_version` | string \| null | yes |  |
| `published_at` | string \| null (date-time) | yes |  |
| `expected_cadence_days` | integer | yes |  |
| `fresh` | boolean | yes | False when older than 1.5x the expected cadence |

## 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 |
| --- | --- | --- |
| 401 | `unauthorized` | Missing, malformed or revoked API key. |
| 429 | `rate-limited / quota-exceeded` | Too many requests per second (retry after `Retry-After`), or the monthly quota is used up. |