# Health

Source: https://langbot.ai/docs/api/public/health

`GET /health`

Whether the API is up, and its version.

**Auth.** None. Without a token the call is served as Free (the Free delay and request budget, shared per IP); send `Authorization: Bearer lb_…` for your plan's.

**Limits.** Counts against your plan's API requests (60, 600 or 3,000 a minute on Free, Builder and Standard).

## Request

**curl**

```bash
curl "https://api.langbot.ai/health"
```

**Python**

```python
from langbot import LangbotClient

async with LangbotClient() as lb:
    print(await lb.health())
```

**TypeScript**

```ts
import { LangbotClient } from "@langbotai/sdk";

const lb = new LangbotClient();
console.log(await lb.health());
```

## Response

`200 OK`

```json
{"ok": true, "version": "0.1.0", "env": "prod"}
```

A real response from the API; long lists are cut to their first items.

## Errors

| Status | `code` | When |
|---|---|---|
| 401 | `token_invalid` | A token was sent and not recognised. Send a valid one, or none to call anonymously. |
| 429 | `rate_limited` | Over your request budget; wait `Retry-After` seconds. |

Every error body is `{"detail": …, "code": "…"}`; branch on `code`. All codes: [Errors](https://langbot.ai/docs/api#errors).