---
type: api
title: Get aliases
description: **All methods and paths for this operation:**
url: https://www.elastic.co/elastic/docs-builder/docs/4493/api/doc/elasticsearch-serverless/operation/operation-indices-get-alias
resource: https://www.elastic.co/elastic/docs-builder/docs/4493/api/doc/elasticsearch-serverless/operation/operation-indices-get-alias
products:
  - Elasticsearch Serverless
---

# Get aliases


## Paths

- `GET` `/{index}/_alias/{name}`
- `GET` `/{index}/_alias`
- `GET` `/_alias/{name}`
- `GET` `/_alias`

#### Path parameters

- `index` (union string | string[]) — optional, leave it out to use `/_alias`
  Comma-separated list of data streams or indices used to limit the request.
Supports wildcards (`*`).
To target all data streams and indices, omit this parameter or use `*` or `_all`.
- `name` (union string | string[]) — optional, leave it out to use `/_alias`
  Comma-separated list of aliases to retrieve.
Supports wildcards (`*`).
To retrieve all aliases, omit this parameter or use `*` or `_all`.

## Description

Retrieves information for one or more data stream or index aliases.

## Required authorization

- Index privileges: `view_index_metadata`

## Authentication

- Api key: `Authorization: <value>`
  Elasticsearch APIs use key-based authentication.
  You must create an API key and use the encoded value in the request header.
  For example:
  
  
  ```
  curl -X GET "${ES_URL}/_cat/indices?v=true" \
    -H "Authorization: ApiKey ${API_KEY}"
  ```
  
  For more information about where to find API keys for the Elasticsearch endpoint (${ES_URL}) for a project, go to [Get started with Elasticsearch Serverless](https://www.elastic.co/docs/solutions/search/serverless-elasticsearch-get-started).

## Query string parameters

- `allow_no_indices` (boolean · default: true) — optional
  A setting that does two separate checks on the index expression.
If `false`, the request returns an error (1) if any wildcard expression
(including `_all` and `*`) resolves to zero matching indices or (2) if the
complete set of resolved indices, aliases or data streams is empty after all
expressions are evaluated. If `true`, index expressions that resolve to no
indices are allowed and the request returns an empty result.
- `expand_wildcards` (string · default: all) — optional
  Type of index that wildcard patterns can match.
If the request can target data streams, this argument determines whether wildcard expressions match hidden data streams.
Supports comma-separated values, such as `open,hidden`.

Supported values include:
  - `all`: Match any data stream or index, including hidden ones.
  - `open`: Match open, non-hidden indices. Also matches any non-hidden data stream.
  - `closed`: Match closed, non-hidden indices. Also matches any non-hidden data stream. Data streams cannot be closed.
  - `hidden`: Match hidden data streams and hidden indices. Must be combined with `open`, `closed`, or `both`.
  - `none`: Wildcard expressions are not accepted.
  Values: `all`, `open`, `closed`, `hidden`, `none`
- `ignore_unavailable` (boolean · default: false) — optional
  If `false`, the request returns an error if it targets a concrete (non-wildcarded)
index, alias, or data stream that is missing, closed, or otherwise unavailable.
If `true`, unavailable concrete targets are silently ignored.
- `master_timeout` (string · default: 30s) — optional
  Period to wait for a connection to the master node.
If no response is received before the timeout expires, the request fails and returns an error.

## Responses

#### `200`

`application/json`

- `<string>` (object)
  - `aliases` (map string to object)
    Map values (object)
    - `filter` ({} Query)
      Query used to limit documents the alias can access.
      See [Query](https://www.elastic.co/elastic/docs-builder/docs/4493/api/doc/elasticsearch-serverless/types/_types-query_dsl-querycontainer)
    - `index_routing` (string)
      Value used to route indexing operations to a specific shard.
If specified, this overwrites the `routing` value for indexing operations.
    - `is_write_index` (boolean · default: false)
      If `true`, the index is the write index for the alias.
    - `routing` (string)
      Value used to route indexing and search operations to a specific shard.
    - `search_routing` (string)
      Value used to route search operations to a specific shard.
If specified, this overwrites the `routing` value for search operations.
    - `is_hidden` (boolean · default: false)
      If `true`, the alias is hidden.
All indices for the alias must have the same `is_hidden` value.
#### `404`

`application/json`

One of:
- **NotFoundAliases**
  - `error` (string)
  - `status` (number)
- **ErrorResponseBase**
  The response returned by Elasticsearch when request execution did not succeed.
  - `error` (object)
    - `type` (string)
      The type of error
    - `reason` (union string) — nullable
      A human-readable explanation of the error, in English.
      One of: `string`
    - `stack_trace` (string)
      The server stack trace. Present only if the `error_trace=true` parameter was sent with the request.
    - `caused_by` (object) — recursive
      Same fields as `error` in `ErrorResponseBase`
    - `root_cause` (object[]) — recursive
      Same fields as `error` in `ErrorResponseBase`
    - `suppressed` (object[]) — recursive
      Same fields as `error` in `ErrorResponseBase`
  - `status` (number)
## Code examples

#### Console

```console
GET _alias
```

#### JavaScript

```javascript
const response = await client.indices.getAlias();
```

#### Python

```python
resp = client.indices.get_alias()
```

#### curl

```curl
curl -X GET "$ELASTICSEARCH_URL/_alias" \
  -H "Authorization: ApiKey $ELASTIC_API_KEY"
```

#### Java

```java
client.indices().getAlias(g -> g);
```

#### C#

```c#
var response = await client.Indices.GetAliasAsync();
```

#### PHP

```php
$resp = $client->indices()->getAlias();
```

#### Ruby

```ruby
response = client.indices.get_alias
```