# REST API reference

The [REST API][ref-rest-api] provides the following endpoints.

<InfoBox>

The `{base_path}` part of the endpoint URLs can be [configured][ref-basepath].
By default, it's `/cubejs-api`.

</InfoBox>

## `{base_path}/v1/load`

Run the query to the REST API and get the results. 

| Parameter   | Description                                                                                                           | Required |
| ----------- | --------------------------------------------------------------------------------------------------------------------- | --- |
| `query`     | Either a single URL encoded Cube [Query](/product/apis-integrations/rest-api/query-format), or an array of queries    | ✅ Yes |
| `queryType` | If multiple queries are passed in `query` for [data blending][ref-recipes-data-blending], this must be set to `multi` | ❌ No |
| `cache`     | See [cache control][ref-cache-control]. `stale-if-slow` by default | ❌ No |

Response

- `query` - The query passed via params. It can be an array of queries and in
  such case it will be treated as a [Data Blending][ref-recipes-data-blending]
  query.
- `data` - Formatted dataset of query results.
- `annotation` - Metadata for query. Contains descriptions for all query items.
  - `title` - Human readable title from the data model.
  - `shortTitle` - Short title for visualization usage (ex. chart overlay)
  - `type` - Data type
- `lastRefreshTime` - An ISO 8601 timestamp indicating when the data was last refreshed.
- `total` - The total number of rows returned for the query. Useful for
  paginating results.

Example request:

```bash
# Request with http method GET
curl \
  -H "Authorization: TOKEN" \
  -G \
  --data-urlencode 'query={"measures":["users.count"]}' \
  http://localhost:4000/cubejs-api/v1/load

# Request with http method POST
# Use POST to fix problem with query length limits
curl \
 -X POST  \
 -H "Content-Type: application/json" \
 -H "Authorization: TOKEN" \
 --data '{"query": {"measures":["users.count"]}}' \
 http://localhost:4000/cubejs-api/v1/load
```

Example response:

```json
{
  "query": {
    "measures": ["users.count"],
    "filters": [],
    "timezone": "UTC",
    "dimensions": [],
    "timeDimensions": []
  },
  "data": [
    {
      "users.count": "700"
    }
  ],
  "lastRefreshTime": "2025-01-13T12:00:00.000Z",
  "annotation": {
    "measures": {
      "users.count": {
        "title": "Users Count",
        "shortTitle": "Count",
        "type": "number"
      }
    },
    "dimensions": {},
    "segments": {},
    "timeDimensions": {}
  }
}
```

<WarningBox>

Currently all fetched numericals are returned in the same format as driver
returns it without any additional processing. Most of drivers return numerical
values as strings instead of javascript integer or float to ensure there's no
loss of significance. Client code should take care of parsing such numerical
values.

</WarningBox>

## `{base_path}/v1/sql`

Takes an API query and returns the SQL query that can be executed against the data source
that is generated by Cube. This endpoint is useful for debugging, understanding how
Cube translates API queries into SQL queries, and providing transparency to SQL-savvy
end users.

Using this endpoint to take the SQL query and execute it against the data source directly
is not recommended  as it bypasses Cube's caching layer and other optimizations.

Request parameters:

| Parameter, type | Description | Required |
| --- | --- | --- |
| `format`, `string` | Query format:<br/>`sql` for [SQL API][ref-sql-api] queries,<br/>`rest` for [REST API][ref-rest-api] queries (default) | ❌ No |
| `query`, `string` | Query as an URL-encoded JSON object or SQL query | ✅ Yes |
| `disable_post_processing`, `boolean` | Flag that affects query planning, `true` or `false` | ❌ No |

If `disable_post_processing` is set to `true`, Cube will try to generate the SQL
as if the query is run without [post-processing][ref-query-wpp], i.e., if it's run as a
query with [pushdown][ref-query-wpd].

The response will contain a JSON object with the following properties under the `sql` key:

| Property, type | Description |
| --- | --- |
| `status`, `string` | Query planning status, `ok` or `error` |
| `sql`, `array` | Two-element array (see below) |
| `sql[0]`, `string` | Generated query with parameter placeholders |
| `sql[1]`, <nobr>`array` or `object`</nobr> | Generated query parameters |

For queries with the `sql` format, the response will also include the following additional
properties under the `sql` key:

| Property, type | Description |
| --- | --- |
| `query_type`, `string` | `regular` for [regular][ref-regular-queries] queries,<br/>`post_processing` for queries with [post-processing][ref-query-wpp],<br/>`pushdown` for queries with [pushdown][ref-query-wpd] |

For queries with the `sql` format, in case of an error, the response will only contain
`status`, `query_type`, and `error` properties.

For example, an error will be returned if `disable_post_processing` was set to `true` but
the query can't be run without post-processing.

### Example

Request with a query in the REST API format:

```bash
curl \
  -H "Authorization: TOKEN" \
  -G \
  --data-urlencode 'query={"measures":["orders.count"]}' \
  --data-urlencode 'format=rest'  \
  http://localhost:4000/cubejs-api/v1/sql
```

Response:

```json
{
  "sql": {
    "sql": [
      "SELECT sum(`base_orders__count`) `orders__count` FROM prod_pre_aggregations.base_orders_orders_by_month AS `base_orders__orders_by_month`  LIMIT 10000",
      []
    ]
  }
}
```

Request with a query in the SQL API format:

```bash
curl \
  -H "Authorization: TOKEN" \
  -G \
  --data-urlencode 'query=SELECT COUNT(*) FROM orders' \
  --data-urlencode 'format=sql'  \  
  http://localhost:4000/cubejs-api/v1/sql
```

Response:

```json
{
  "sql": {
    "status": "ok",
    "sql": [
      "SELECT\n      count(\"base_orders\".id) \"count_uint8_1__\"\n    FROM\n      (SELECT * FROM 's3://cube-tutorial/orders.csv') AS \"base_orders\"  LIMIT 50000",
      []
    ],
    "query_type": "regular"
  }
}
```

Request with a query in the SQL API format that is executed with post-processing:

```bash
curl \
  -H "Authorization: TOKEN" \
  -G \
  --data-urlencode 'query=SELECT AVG(count) FROM (SELECT COUNT(*) AS count FROM orders) AS table' \
  --data-urlencode 'format=sql'  \ 
  http://localhost:4000/cubejs-api/v1/sql
```

Response:

```json
{
  "sql": {
    "status": "error",
    "error": "Provided query can not be executed without post-processing.",
    "query_type": "post_processing"
  }
}
```

Request with a query in the SQL API format that is forced to be executed without
post-processing, i.e., as a query with pushdown:

```bash
curl \
  -H "Authorization: TOKEN" \
  -G \
  --data-urlencode 'query=SELECT AVG(count) FROM (SELECT COUNT(*) AS count FROM orders) AS table' \
  --data-urlencode 'format=sql' \
  --data-urlencode 'disable_post_processing=true'  \
  http://localhost:4000/cubejs-api/v1/sql
```

Response:

```json
{
  "sql": {
    "status": "ok",
    "sql": [
      "SELECT \"table\".\"avg_table_count_\" \"avg_table_count_\" \nFROM (\n  SELECT AVG(\"table\".\"count\") \"avg_table_count_\" \n  FROM (\n    SELECT\n          count(\"base_orders\".id) \"count\"\n        FROM\n          (SELECT * FROM 's3://cube-tutorial/orders.csv') AS \"base_orders\" \n  ) AS \"table\"\n) AS \"table\"\nLIMIT 50000",
      []
    ],
    "query_type": "pushdown"
  }
}
```

## `{base_path}/v1/convert-query`

Takes an API query in the specified input format and converts it to the specified
output format. Currently, only conversion from [SQL API][ref-sql-api] queries to
[REST API][ref-rest-api] queries is supported.

This endpoint is useful for translating SQL API queries into equivalent REST API
queries that can be used with the [`/v1/load`](#base_pathv1load) endpoint.

Request parameters (JSON body):

| Parameter, type | Description | Required |
| --- | --- | --- |
| `input`, `string` | Input query format. Use `sql` for [SQL API][ref-sql-api] queries | ✅ Yes |
| `output`, `string` | Output query format. Use `rest` for [REST API][ref-rest-api] queries | ✅ Yes |
| `query`, `string` | Input query in the specified format | ✅ Yes |

The response will contain a JSON object with the following properties:

| Property, type | Description |
| --- | --- |
| `status`, `string` | Query conversion status, `ok` or `error` |
| `query`, `object` | Converted query in the [REST API query format][ref-rest-api-query-format] (only present when `status` is `ok`) |
| `error`, `string` | Error message (only present when `status` is `error`) |

An error will be returned if the input query can't be converted to the specified
output format, e.g., if the SQL API query requires post-processing on top of
REST API capabilities or if the SQL API query results in multiple REST API queries.

### Example

Request to convert a SQL API query with a filter:

```bash
curl \
  -X POST \
  -H "Authorization: TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"input": "sql", "output": "rest", "query": "SELECT MEASURE(total_amount) FROM orders WHERE status = '\''foo'\''"}' \
  http://localhost:4000/cubejs-api/v1/convert-query
```

Successful response:

```json
{
  "status": "ok",
  "query": {
    "measures": [
      "orders.total_amount"
    ],
    "dimensions": [],
    "filters": [
      {
        "member": "orders.status",
        "operator": "equals",
        "values": ["foo"]
      }
    ],
    "segments": [],
    "order": []
  }
}
```

## `{base_path}/v1/meta`

<InfoBox>

In Cube Cloud, consider using the [Metadata API][self-metadata-api] instead.
It provides additional information such as data lineage.

</InfoBox>

Get meta-information for cubes and views defined in the data model. Information about cubes and views with `public: false` will not be returned.

| Parameter | Description | Required |
| --- | --- | --- |
| `onlyViews` | When set to `true`, the response will include only views (entries with `type: "view"`) and any associated `viewGroups`. Useful for clients that consume views exclusively to avoid loading duplicated cube metadata. Defaults to `false`. | ❌ No |
| `extended` | If present, returns extended schema information including SQL definitions for cubes and views. | ❌ No |

Response

- `cubes` - Array of cubes and views
  - `name` - Codename of the cube/view
  - `type` - Type can be "cube" or "view"
  - `title` - Human-readable cube/view name
  - `meta` - Custom metadata
  - `measures` - Array of measures in this cube/view
  - `dimensions` - Array of dimensions in this cube/view
  - `hierarchies` - Array of hierarchies in this cube
  - `segments` - Array of segments in this cube/view
  - `folders` and `nestedFolders` - Arrays of flat and nested [folder][ref-folders] structures in this view, respectively
  - `connectedComponent` - An integer representing a join relationship. If the same value is returned for two cubes, then there is
    at least one join path between them.

Example request:

```bash
curl \
  -H "Authorization: TOKEN" \
  -G \
  http://localhost:4000/cubejs-api/v1/meta
```

Example request to load only views:

```bash
curl \
  -H "Authorization: TOKEN" \
  -G \
  http://localhost:4000/cubejs-api/v1/meta?onlyViews=true
```

Example response:

```json
{
  "cubes": [
    {
      "name": "Users",
      "title": "Users",
      "meta": {
          "someKey": "someValue",
          "nested": {
            "someKey": "someValue"
          }
      },
      "connectedComponent": 1,
      "measures": [
        {
          "name": "users.count",
          "title": "Users Count",
          "shortTitle": "Count",
          "aliasName": "users.count",
          "type": "number",
          "aggType": "count",
          "drillMembers": ["users.id", "users.city", "users.createdAt"]
        }
      ],
      "dimensions": [
        {
          "name": "users.city",
          "title": "Users City",
          "type": "string",
          "aliasName": "users.city",
          "shortTitle": "City",
          "suggestFilterValues": true
        }
      ],
      "segments": []
    }
  ]
}
```

## `{base_path}/v1/cubesql`

Run the query to the SQL API and get the results.

<InfoBox>

This endpoint is part of the [SQL API][ref-sql-api].

</InfoBox>

| Parameter | Description | Required |
| --- | --- | --- |
| `query` | The SQL query to run | ✅ Yes |
| `timezone` | The [time zone][ref-time-zone] for this query in the [TZ Database Name][link-tzdb] format, e.g., `America/Los_Angeles` | ❌ No |
| `cache` | See [cache control][ref-cache-control]. `stale-if-slow` by default | ❌ No |

This endpoint supports [request span annotation][ref-request-span]. You can
pass the `x-request-id` or `traceparent` HTTP header to propagate your
request ID through the entire SQL execution chain for tracing and monitoring.
If neither header is provided, Cube auto-generates a request ID.

Response: a stream of newline-delimited JSON objects. The first object contains
the `schema` property with column names and types, and optionally
`lastRefreshTime` indicating when the data was last refreshed.
The following objects contain chunks of the result set under the `data` property.
Each chunk includes one or more rows of the result set.

### Example

Simple request:

```bash
curl \
  -X POST \
  -H "Authorization: TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"query": "SELECT 123 AS value UNION ALL SELECT 456 AS value UNION ALL SELECT 789 AS value"}' \
  http://localhost:4000/cubejs-api/v1/cubesql
```

Response:

```json
{"schema":[{"name":"value","column_type":"Int64"}],"lastRefreshTime":"2025-01-13T12:00:00.000Z"}
{"data":[["789"]]}
{"data":[["123"]]}
{"data":[["456"]]}
```

Simple request with a query that returns multiple columns:

```bash
curl \
  -X POST \
  -H "Authorization: TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"query": "SELECT full_name, MEASURE(results_race_wins) AS wins, MEASURE(results_average_race_position) AS avg_position FROM session_results GROUP BY 1 ORDER BY 3 LIMIT 5"}' \
  http://localhost:4000/cubejs-api/v1/cubesql
```

Response:

```json
{"schema":[{"name":"full_name","column_type":"String"},{"name":"wins","column_type":"Int64"},{"name":"avg_position","column_type":"Double"}],"lastRefreshTime":"2025-01-13T12:00:00.000Z"}
{"data":[["Max VERSTAPPEN","10","3.730769230769231"],["Lando NORRIS","4","4"],["Charles LECLERC","4","4.730769230769231"],["Oscar PIASTRI","3","4.8076923076923075"],["Andrea Kimi ANTONELLI","0","5"]]}
```

Request with a custom request ID for tracing:

```bash
curl \
  -X POST \
  -H "Authorization: TOKEN" \
  -H "Content-Type: application/json" \
  -H "x-request-id: my-trace-id-span-1" \
  -d '{"query": "SELECT 123 AS value"}' \
  http://localhost:4000/cubejs-api/v1/cubesql
```

## `{base_path}/v1/pre-aggregations/jobs`

Trigger pre-aggregation build jobs or retrieve statuses of such jobs.

<InfoBox>

This endpoint is part of the [Orchestration API][ref-orchestration-api].

</InfoBox>

### Triggering jobs

| Parameter                  | Description                                                    | Required |
| -------------------------- | -------------------------------------------------------------- | -------- |
| `action`                   | Use `post` to trigger jobs                                     | ✅       |
| `selector.contexts`        | Array of objects, each containing a `securityContext`          | ✅       |
| `selector.timezones`       | Array of timezones                                             | ✅       |
| `selector.dataSources`     | Array of data source names which have pre-aggregations defined | ❌       |
| `selector.cubes`           | Array of cube names which contain pre-aggregations             | ❌       |
| `selector.preAggregations` | Array of pre-aggregation names                                 | ❌       |
| `selector.dateRange`       | Date Range tuple ['range-date-start', 'range-date-end']        | ❌       |

To trigger pre-aggregation builds, send a `POST` request with a payload
including `post` as the `action` and `selector` properties. The response will
contain an array of `tokens` (identifiers) of triggered jobs.

Example request triggering builds of all pre-aggregations defined in all cubes
using an empty security context and a `UTC` timezone:

```bash
curl \
  -d '{
    "action": "post",
    "selector": {
      "contexts": [{ "securityContext": {} }],
      "timezones": ["UTC"]
    }
  }' \
  -H "Authorization: TOKEN" \
  -H "Content-Type: application/json" \
  -X POST \
  https://localhost:4000/cubejs-api/v1/pre-aggregations/jobs
```

Example request triggering builds of all pre-aggregations defined in the
`orders` cube using an empty security context and a `UTC` timezone:

```bash
curl \
  -d '{
    "action": "post",
    "selector": {
      "contexts": [{ "securityContext": {} }],
      "timezones": ["UTC"],
      "cubes": ["orders"]
    }
  }' \
  -H "Authorization: TOKEN" \
  -H "Content-Type: application/json" \
  -X POST \
  https://localhost:4000/cubejs-api/v1/pre-aggregations/jobs
```

Example request triggering builds of the `main` pre-aggregation defined in the
`orders` cube using an empty security context and a `UTC` timezone:

```bash
curl \
  -d '{
    "action": "post",
    "selector": {
      "contexts": [{ "securityContext": {} }],
      "timezones": ["UTC"],
      "preAggregations": ["orders.main"]
    }
  }' \
  -H "Authorization: TOKEN" \
  -H "Content-Type: application/json" \
  -X POST \
  https://localhost:4000/cubejs-api/v1/pre-aggregations/jobs
```

Example request triggering builds of the `main` pre-aggregation defined in the
`orders` cube within date range with some security context data
and an `America/Los_Angeles` timezone:

```bash
curl \
  -d '{
    "action": "post",
    "selector": {
      "contexts": [{ "securityContext": { "tenantId": "tenant1" } }],
      "timezones": ["America/Los_Angeles"],
      "preAggregations": ["orders.main"],
      "dateRange": ["2020-01-01", "2020-02-01"]
    }
  }' \
  -H "Authorization: TOKEN" \
  -H "Content-Type: application/json" \
  -X POST \
  https://localhost:4000/cubejs-api/v1/pre-aggregations/jobs
```

Example response:

```json
[
  "e9a6a0c55885cea5371348500ce7d7dc",
  "d1329b6c8d152e734fc4dcf7307b1b58",
  "6f4ea38373663fffc4334a576574845b",
  "ea903b10634b2f3141b35a2529870e89"
]
```

### Retrieving statuses of jobs

| Parameter | Description                                                       | Required |
| --------- | ----------------------------------------------------------------- | -------- |
| `action`  | Use `get` to retrieve statuses of previously triggered jobs       | ✅       |
| `tokens`  | Array of `tokens` returned when triggering jobs                   | ✅       |
| `resType` | Use `object` to get a JSON object instead of an array in response | ❌       |

To retrieve statuses of previously triggered jobs, send a `POST` request with a
payload including the `tokens` property.

In the `status` property of the payload, you can get the following statuses:

| Status | Description |
| --- | --- |
| `scheduled` | The job hasn't run yet |
| `processing` | The job is currently running |
| `missing_partition` | The job has failed |
| `done` | The job has successfully completed |

Example request:

```bash
curl \
  -d '{
    "action": "get",
    "tokens": [
      "e9a6a0c55885cea5371348500ce7d7dc",
      "d1329b6c8d152e734fc4dcf7307b1b58"
    ]
  }' \
  -H "Authorization: TOKEN" \
  -H "Content-Type: application/json" \
  -X POST \
  https://localhost:4000/cubejs-api/v1/pre-aggregations/jobs
```

Example response:

```json
[
  {
    "token": "e9a6a0c55885cea5371348500ce7d7dc",
    "table": "prod_pre_aggregations.orders_category_and_date_hod0x3hf_03krd5ns_1hop3hn",
    "status": "processing",
    "selector": {
      "cubes": ["orders"],
      "preAggregations": ["orders.category_and_date"],
      "contexts": [{ "securityContext": { "tenant": "tenant_1" } }],
      "timezones": ["UTC"],
      "dataSources": ["default"]
    }
  },
  {
    "token": "d1329b6c8d152e734fc4dcf7307b1b58",
    "table": "prod_pre_aggregations.orders_category_and_date_mzfp445f_r2h2isa5_1hop3hn",
    "status": "processing",
    "selector": {
      "cubes": ["orders"],
      "preAggregations": ["orders.category_and_date"],
      "contexts": [{ "securityContext": { "tenant": "tenant_1" } }],
      "timezones": ["UTC"],
      "dataSources": ["default"]
    }
  }
]
```

## Metadata API

<InfoBox>

Metadata API is only available in Cube Cloud.

</InfoBox>

These endpoints provide programmatic access to data model metadata for data
catalogs, lineage tools, and other integrations. To access these endpoints,
you need a JWT token which can be obtained via the
[Control Plane API][ref-control-plane-api].

### `{base_path}/v1/data-sources`

Send a `GET` request to list configured data sources visible to the authenticated user.

Example request:

```bash
curl \
  -H "Authorization: Bearer TOKEN" \
  https://example.cubecloud.dev/cubejs-api/v1/data-sources
```

Example response:

```json
{
  "data": {
    "data_sources": [
      {
        "name": "default",
        "type": "postgres",
        "database": "analytics",
        "schema": "public"
      }
    ]
  }
}
```

### `{base_path}/v1/entities`

Send a `GET` request to list all cubes and views in the data model. Results are
sorted by type (cubes first), then by name.

Query parameters:

| Parameter | Description | Required |
| --- | --- | --- |
| `offset` | Pagination offset | No |
| `limit` | Maximum number of items to return | No |

Example request:

```bash
curl \
  -H "Authorization: Bearer TOKEN" \
  "https://example.cubecloud.dev/cubejs-api/v1/entities?limit=10"
```

Example response:

```json
{
  "data": {
    "entities": [
      {
        "type": "cube",
        "name": "orders"
      },
      {
        "type": "view",
        "name": "orders_view"
      }
    ]
  },
  "pagination": {
    "offset": 0,
    "limit": 10,
    "total": 2
  }
}
```

### `{base_path}/v1/entities/{name}`

Send a `GET` request to get detailed metadata for a single cube or view.

Path parameters:

| Parameter | Description |
| --- | --- |
| `name` | The cube or view name |

Response includes:

- `type` - Either `cube` or `view`
- `name` - The cube or view name
- `title` - Human-readable title
- `description` - Description from the data model
- `table_references` - Data lineage to source tables
- `cube_references` - Relationships to other cubes
- `measures` - Array of measures with `member_references` and `column_references`
- `dimensions` - Array of dimensions with `is_primary_key` flag

Example request:

```bash
curl \
  -H "Authorization: Bearer TOKEN" \
  https://example.cubecloud.dev/cubejs-api/v1/entities/orders
```

Example response:

```json
{
  "data": {
    "type": "cube",
    "name": "orders",
    "title": "Orders",
    "description": "Order transactions",
    "table_references": [
      {
        "schema": "public",
        "table": "orders"
      }
    ],
    "cube_references": ["customers", "products"],
    "measures": [
      {
        "name": "count",
        "title": "Count",
        "type": "count",
        "member_references": [],
        "column_references": [
          {
            "schema": "public",
            "table": "orders",
            "column": "id"
          }
        ]
      }
    ],
    "dimensions": [
      {
        "name": "id",
        "title": "Id",
        "type": "number",
        "is_primary_key": true
      },
      {
        "name": "status",
        "title": "Status",
        "type": "string",
        "is_primary_key": false
      }
    ]
  }
}
```

### `{base_path}/v1/entities/all`

Send a `POST` request to get detailed metadata for multiple cubes and views in one request.

Request body:

| Property | Type | Description | Required |
| --- | --- | --- | --- |
| `cubes` | `array` | Array of cube names to retrieve | No |
| `views` | `array` | Array of view names to retrieve | No |

Query parameters:

| Parameter | Description | Required |
| --- | --- | --- |
| `offset` | Pagination offset | No |
| `limit` | Maximum number of items to return | No |

Example request:

```bash
curl \
  -X POST \
  -H "Authorization: Bearer TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"cubes": ["orders"], "views": ["orders_view"]}' \
  https://example.cubecloud.dev/cubejs-api/v1/entities/all
```

Example response:

```json
{
  "data": {
    "entities": [
      {
        "type": "cube",
        "name": "orders",
        "title": "Orders",
        "measures": [...],
        "dimensions": [...]
      },
      {
        "type": "view",
        "name": "orders_view",
        "title": "Orders View",
        "measures": [...],
        "dimensions": [...]
      }
    ]
  },
  "pagination": {
    "offset": 0,
    "limit": 20,
    "total": 2
  }
}
```

## Health checks

### `/readyz`

Reports if the deployment has successfully started. To do so, it will try to test
the connection to the _default_ [data source][ref-datasources].

Example of a successful request:

```bash
curl -i http://localhost:4000/readyz
HTTP/1.1 200 OK
X-Powered-By: Express
Access-Control-Allow-Origin: *
Content-Type: application/json; charset=utf-8
Content-Length: 19
ETag: W/"13-MyluqxoYxC0tUxBeZCnbaWYVLhg"
Date: Mon, 18 Jan 2021 15:39:57 GMT
Connection: keep-alive
Keep-Alive: timeout=5

{"health":"HEALTH"}
```

Example of a failed response:

```bash
curl -i http://localhost:4000/readyz
HTTP/1.1 500 Internal Server Error
X-Powered-By: Express
Access-Control-Allow-Origin: *
Content-Type: application/json; charset=utf-8
Content-Length: 19
ETag: W/"13-MyluqxoYxC0tUxBeZCnbaWYVLhg"
Date: Mon, 18 Jan 2021 15:39:57 GMT
Connection: keep-alive
Keep-Alive: timeout=5

{"health":"DOWN"}
```

### `/livez`

Reports if the deployment is still healthy. This is confirmed by testing any
existing connections to data sources.

Example of a successful response:

```bash
curl -i http://localhost:4000/livez
HTTP/1.1 200 OK
X-Powered-By: Express
Access-Control-Allow-Origin: *
Content-Type: application/json; charset=utf-8
Content-Length: 19
ETag: W/"13-MyluqxoYxC0tUxBeZCnbaWYVLhg"
Date: Mon, 18 Jan 2021 15:39:57 GMT
Connection: keep-alive
Keep-Alive: timeout=5

{"health":"HEALTH"}
```

Example of a failed response:

```bash
curl -i http://localhost:4000/livez
HTTP/1.1 500 Internal Server Error
X-Powered-By: Express
Access-Control-Allow-Origin: *
Content-Type: application/json; charset=utf-8
Content-Length: 19
ETag: W/"13-MyluqxoYxC0tUxBeZCnbaWYVLhg"
Date: Mon, 18 Jan 2021 15:39:57 GMT
Connection: keep-alive
Keep-Alive: timeout=5

{"health":"DOWN"}
```

[ref-recipes-data-blending]: /product/data-modeling/concepts/data-blending#data-blending
[ref-rest-api]: /product/apis-integrations/rest-api
[ref-basepath]: /product/apis-integrations/rest-api#base-path
[ref-datasources]: /product/configuration/advanced/multiple-data-sources
[ref-sql-api]: /product/apis-integrations/sql-api
[ref-rest-api]: /product/apis-integrations/rest-api
[ref-rest-api-query-format]: /product/apis-integrations/rest-api/query-format
[ref-regular-queries]: /product/apis-integrations/queries#regular-query
[ref-query-wpp]: /product/apis-integrations/queries#query-with-post-processing
[ref-query-wpd]: /product/apis-integrations/queries#query-with-pushdown
[ref-sql-api]: /product/apis-integrations/sql-api
[ref-orchestration-api]: /product/apis-integrations/orchestration-api
[ref-folders]: /product/data-modeling/reference/view#folders
[ref-cache-control]: /product/apis-integrations/rest-api#cache-control
[ref-time-zone]: /product/apis-integrations/queries#time-zone
[link-tzdb]: https://en.wikipedia.org/wiki/Tz_database
[ref-control-plane-api]: /product/apis-integrations/control-plane-api
[self-metadata-api]: #metadata-api
[ref-request-span]: /product/apis-integrations/rest-api#request-span-annotation
