Up to 100 namespaces are returned at a time by default, in sorted order (bitwise “C” collation). If the `limit` parameter is set, up to that number of namespaces are returned instead. Whenever there are additional namespaces to return, the response includes `pagination.next`, a token you pass as `paginationToken` to get the next batch of namespaces. When the response has no `pagination`, there are no more namespaces to return.

For guidance and examples, see [Manage namespaces](/guides/manage-data-manage-namespaces).

**Note:** This operation is not supported for pod-based indexes.

:::code-group
```bash curl
# To get the unique host for an index,
# see https://docs.pinecone.io/guides/manage-data/target-an-index
PINECONE_API_KEY="YOUR_API_KEY"
INDEX_HOST="INDEX_HOST"

curl "https://$INDEX_HOST/namespaces" \
    -H "Api-Key: $PINECONE_API_KEY" \
    -H "X-Pinecone-Api-Version: 2026-07"
```
:::

`GET /namespaces`

:::code-group
```json title="200"
{
  "namespaces": [
    {
      "name": "example-namespace",
      "record_count": "20000",
      "schema": {
        "fields": {
          "description": {
            "filterable": true
          },
          "genre": {
            "filterable": true
          },
          "year": {
            "filterable": true
          }
        }
      },
      "indexed_fields": {
        "fields": [
          "genre",
          "year",
          "author"
        ]
      },
      "size_bytes": "1048576"
    }
  ],
  "pagination": {
    "next": "Tm90aGluZyB0byBzZWUgaGVyZQo="
  },
  "total_count": 25
}
```

```json title="400"
{
  "code": 123,
  "message": "<string>",
  "details": [
    {
      "typeUrl": "<string>",
      "value": "<string>"
    }
  ]
}
```

```json title="4XX"
{
  "code": 123,
  "message": "<string>",
  "details": [
    {
      "typeUrl": "<string>",
      "value": "<string>"
    }
  ]
}
```

```json title="5XX"
{
  "code": 123,
  "message": "<string>",
  "details": [
    {
      "typeUrl": "<string>",
      "value": "<string>"
    }
  ]
}
```
:::

#### Authorizations

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `Api-Key` | `string` | - |  |

An API Key is required to call Pinecone APIs. Get yours from the [console](https://app.pinecone.io/).

#### Headers

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `X-Pinecone-Api-Version` | `string` | `2026-07` | Required date-based version header |

#### Query Parameters

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `limit?` | `integer` | `100` | Max number of namespaces to return per page. Defaults to 100. Required range: 1 <= x <= 100 |

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `paginationToken?` | `string` | - | Pagination token to continue a previous listing operation. |

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `prefix?` | `string` | - | Prefix of the namespaces to list. Acts as a filter to return only namespaces that start with this prefix. Must be ASCII and must not contain the NUL character, matching the namespace names it filters. An empty prefix matches every namespace. Required string length: 0 - 512 |

#### Response

`200` — A successful response

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `namespaces?` | `object[]` | - | The list of namespaces belonging to this index. |

::::accordion{title="Show child attributes"}
| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `name?` | `string` | - | The name of the namespace. Example: example-namespace |

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `record_count?` | `string` | - | The total number of records in the namespace. A 64-bit integer, serialized as a decimal string. Example: 20000 |

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `schema?` | `object` | - | Schema for the behavior of Pinecone's internal metadata index. By default, all metadata is indexed; when schema is present, only fields which are present in the fields object with a filterable: true are indexed. Note that filterable: false is not currently supported. |

:::accordion{title="Show child attributes"}
| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `fields?` | `object` | - | A map of metadata field names to their configuration. The field name must be a valid metadata field name. The field name must be unique. At most 50 fields may be declared. Field names may not begin with $, which introduces a filter operator. When declared at index creation, names beginning with _ are also rejected (reserved for internal use). |
:::

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `indexed_fields?` | `object` | - | A list of all indexed metatadata fields in the namespace |

:::accordion{title="Show child attributes"}
| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `fields?` | `string[]` | - |  |
:::

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `size_bytes?` | `string` | - | The total size of the namespace's data, in bytes, as a 64-bit integer serialized as a decimal string. Approximate: data written before size tracking reads as 0, and recently deleted data may still be counted; compaction converges the value. Example: 1048576 |
::::

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `pagination?` | `object` | - |  |

:::accordion{title="Show child attributes"}
| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `next` | `string` | - | Example: Tm90aGluZyB0byBzZWUgaGVyZQo= |
:::

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `total_count?` | `integer` | - | The total number of namespaces in the index matching the prefix Example: 25 |

## Related pages

- [Create a namespace](./database-data-plane-createnamespace.md)
- [Describe a namespace](./database-data-plane-describenamespace.md)
- [Delete a namespace](./database-data-plane-deletenamespace.md)

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