# Read computer logs

> Read the workload's stdout and stderr as NDJSON `{ts, stream, line}` lines.

> Nevia is in beta and open to selected teams. Public launch in Dec 2026. The CLI installs with `curl -fsSL https://get.nevia.cloud | sh`, and the MCP server is at https://api.nevia.cloud/mcp. A person signs in once in the browser.
> Setup, sign-in and requesting access: [SKILL.md](https://nevia.cloud/SKILL.md). When Nevia fits and when it doesn't: [why.md](https://nevia.cloud/why.md).

> For the complete documentation index, see [llms.txt](https://nevia.cloud/llms.txt). This page's HTML version: https://nevia.cloud/docs/reference/api/computers/getLogs

`GET https://api.nevia.cloud/v1/computers/{cmp}/logs`

## Authorization

- `bearerAuth`: HTTP bearer in the Authorization header

Send the token in the `Authorization: Bearer <token>` header. See [Authenticate](https://nevia.cloud/docs/reference/api.md#authenticate).

## Parameters

| Name | In | Type | Required | Description |
|---|---|---|---|---|
| `cmp` | path | string | yes | Computer id: 27 lowercase letters and digits. Match `^[A-Za-z0-9_-]{1,64}$`. |
| `since` | query | string | no | Start time, RFC 3339 or relative like `10m`. |
| `tail` | query | integer | no | Number of recent lines to return. Default `100`. Range `1 <= value <= 10000`. |
| `follow` | query | boolean | no | Stream new lines as they arrive. Default `false`. |

## Behavior

`follow=true` keeps the response open (chunked) and streams new lines.

## Example request

### cURL

```bash
curl -X GET "https://api.nevia.cloud/v1/computers/01d4cnjk3xg90y576w8y6t4gdwm/logs" \
  -H "Authorization: Bearer $TOKEN"
```

### JavaScript

```js
fetch("https://api.nevia.cloud/v1/computers/01d4cnjk3xg90y576w8y6t4gdwm/logs", {
  method: "GET",
  headers: {
    "Authorization": `Bearer ${process.env.TOKEN}`
  }
})
```

### Python

```python
import os
import requests

url = "https://api.nevia.cloud/v1/computers/01d4cnjk3xg90y576w8y6t4gdwm/logs"

response = requests.request("GET", url, headers = {
  "Authorization": f"Bearer {os.environ['TOKEN']}"
})

print(response.text)
```

## Responses

### 200

NDJSON lines from the machine's journal, streamed when `follow=true`.

Content type: `application/x-ndjson`

Schema: `LogLine`

One log line

| Field | Type | Required | Description |
|---|---|---|---|
| `ts` | Timestamp \| null | yes | Entry timestamp. |
| `stream` | string | yes | Stream the line came from, an open set. |
| `line` | string | yes |  |

Example:

```json
{
  "ts": "2026-09-10T12:34:56Z",
  "stream": "journal",
  "line": "string"
}
```

### 400

`validation_failed`: malformed body, unknown field, or invalid id or name. Fix `details.field` and retry.

Content type: `application/json`

Schema: `ErrorEnvelope`

Body of every error response

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | Error | yes |  |

Example `validation_failed`:

```json
{
  "error": {
    "code": "validation_failed",
    "message": "Unknown field `colour` in the request body. Remove it; request bodies are strict.",
    "details": {
      "field": "colour",
      "in": "body"
    },
    "request_id": "req_01j9k3m2p7q4r8s1"
  }
}
```

### 401

`unauthorized`: the credential is missing, malformed, expired, or revoked. Send a valid bearer token.

Content type: `application/json`

Schema: `ErrorEnvelope`

Body of every error response

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | Error | yes |  |

Example `unauthorized`:

```json
{
  "error": {
    "code": "unauthorized",
    "message": "Missing credential. Send `Authorization: Bearer <token>` with an access token.",
    "details": {},
    "request_id": "req_01j9k3m2p7q4r8s1"
  }
}
```

### 404

`not_found`: the computer does not exist, or you cannot see it. Both return the same response.

Content type: `application/json`

Schema: `ErrorEnvelope`

Body of every error response

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | Error | yes |  |

Example `not_found`:

```json
{
  "error": {
    "code": "not_found",
    "message": "Computer 01d4cnjk3xg90y576w8y6t4gdwm was not found. List the computers you can access with GET /v1/computers?workspace=<ws>.",
    "details": {
      "computer": "01d4cnjk3xg90y576w8y6t4gdwm"
    },
    "request_id": "req_01j9k3m2p7q4r8s1"
  }
}
```

### 409

`invalid_state`: the computer is `creating`, `failed` or `deleting`, or the platform no longer has its machine.

Content type: `application/json`

Schema: `ErrorEnvelope`

Body of every error response

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | Error | yes |  |

Example `invalid_state`:

```json
{
  "error": {
    "code": "invalid_state",
    "message": "Computer 01d4cnjk3xg90y576w8y6t4gdwm is failed and cannot stream logs. Logs are readable while the computer is ready or sleeping.",
    "details": {
      "computer": "01d4cnjk3xg90y576w8y6t4gdwm",
      "workspace": "01d4cnjjq40hnnh0nwmkg35nv2h",
      "state": "failed",
      "pending": null
    },
    "request_id": "req_01j9k3m2p7q4r8s1"
  }
}
```

### 429

`rate_limited`: slow down. Retry after `Retry-After`.

Content type: `application/json`

Schema: `ErrorEnvelope`

Body of every error response

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | Error | yes |  |

Example `rate_limited`:

```json
{
  "error": {
    "code": "rate_limited",
    "message": "Too many requests. Retry after 2 seconds.",
    "details": {
      "retry_after_seconds": 2
    },
    "request_id": "req_01j9k3m2p7q4r8s1"
  }
}
```

### 500

`request_failed`, or the failed action's own code, such as `creation_failed`, `authorization_failed` or `command_execution_failed`. Quote `request_id` when reporting. The diagnostic stays in server logs.

Content type: `application/json`

Schema: `ErrorEnvelope`

Body of every error response

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | Error | yes |  |

Example `request_failed`:

```json
{
  "error": {
    "code": "request_failed",
    "message": "request failed",
    "details": {},
    "request_id": "req_01j9k3m2p7q4r8s1"
  }
}
```

### 503

The action is temporarily unavailable, named by its code (`creation_failed`, `wake_failed`, ...). Wait at least `Retry-After` seconds (60 by default). `details.retryable` says whether repeating the request is safe. Keep the original `Idempotency-Key`. Signing in again does not help.

Content type: `application/json`

Schema: `ErrorEnvelope`

Body of every error response

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | Error | yes |  |

Example `creation_failed`:

```json
{
  "error": {
    "code": "creation_failed",
    "message": "The computer could not be created. Try again later, and quote request_id if it persists.",
    "details": {
      "retryable": true
    },
    "request_id": "req_01j9k3m2p7q4r8s1"
  }
}
```