## Create a namespace

:::callout{intent="note"}
This feature requires the `2025-10` version of the API or later.
:::

Namespaces are created automatically as you [upsert](/guides/index-data-upsert-data) records. However, you can also create namespaces ahead of time using the [`create_namespace`](/guides/database-2026-07-data-plane-createnamespace) operation. Specify a name for the namespace and, optionally, the [metadata fields to index](/guides/index-data-configure-metadata-indexing).

:::code-group
```python Python theme={null}
from pinecone import Pinecone

pc = Pinecone(api_key="YOUR_API_KEY")

# To get the unique host for an index, 
# see https://docs.pinecone.io/guides/manage-data/target-an-index
index = pc.Index(host="INDEX_HOST")

namespace = index.create_namespace(
    name="example-namespace",
    schema={
        "fields": {
            "document_id": {"filterable": True},
            "document_title": {"filterable": True},
            "chunk_number": {"filterable": True},
            "document_url": {"filterable": True},
            "created_at": {"filterable": True}
        }
    }
)

print(namespace)
```

```javascript JavaScript theme={null}
import { Pinecone } from '@pinecone-database/pinecone';

const pc = new Pinecone({ apiKey: 'YOUR_API_KEY' })

// To get the unique host for an index, 
// see https://docs.pinecone.io/guides/manage-data/target-an-index
const index = pc.index('INDEX_NAME', 'INDEX_HOST');

const namespace = await index.createNamespace({
  name: 'example-namespace',
  schema: {
    fields: {
      document_id: { filterable: true },
      document_title: { filterable: true },
      chunk_number: { filterable: true },
      document_url: { filterable: true },
      created_at: { filterable: true }
    }
  }
});

console.log(namespace);
```

```java Java theme={null}
import io.pinecone.clients.Index;
import io.pinecone.configs.PineconeConfig;
import io.pinecone.configs.PineconeConnection;
import io.pinecone.proto.NamespaceDescription;
import io.pinecone.proto.MetadataSchema;
import io.pinecone.proto.MetadataSchemaField;

public class CreateNamespaceExample {
    public static void main(String[] args) {
        PineconeConfig config = new PineconeConfig("YOUR_API_KEY");
        // To get the unique host for an index, 
        // see https://docs.pinecone.io/guides/manage-data/target-an-index
        config.setHost("INDEX_HOST");
        PineconeConnection connection = new PineconeConnection(config);

        Index index = new Index(config, connection, "INDEX_NAME");

        MetadataSchemaField filterable = MetadataSchemaField.newBuilder()
            .setFilterable(true)
            .build();

        MetadataSchema schema = MetadataSchema.newBuilder()
            .putFields("document_id", filterable)
            .putFields("document_title", filterable)
            .putFields("chunk_number", filterable)
            .putFields("document_url", filterable)
            .putFields("created_at", filterable)
            .build();

        NamespaceDescription namespace = index.createNamespace("example-namespace", schema);

        System.out.println(namespace);
    }
}
```

```go Go theme={null}
package main

import (
    "context"
    "encoding/json"
    "fmt"
    "log"

    "github.com/pinecone-io/go-pinecone/v4/pinecone"
)

func prettifyStruct(obj interface{}) string {
  	bytes, _ := json.MarshalIndent(obj, "", "  ")
    return string(bytes)
}

func main() {
    ctx := context.Background()

    pc, err := pinecone.NewClient(pinecone.NewClientParams{
        ApiKey: "YOUR_API_KEY",
    })
    if err != nil {
        log.Fatalf("Failed to create Client: %v", err)
    }

    // To get the unique host for an index, 
    // see https://docs.pinecone.io/guides/manage-data/target-an-index
    idxConnection, err := pc.Index(pinecone.NewIndexConnParams{Host: "INDEX_HOST"})
    if err != nil {
        log.Fatalf("Failed to create IndexConnection for Host: %v", err)
    } 

    namespace, err := idxConnection.CreateNamespace(ctx, &pinecone.CreateNamespaceParams{
        Name: "example-namespace",
        Schema: &pinecone.MetadataSchema{
            Fields: map[string]pinecone.MetadataSchemaField{
                "document_id":    {Filterable: true},
                "document_title": {Filterable: true},
                "chunk_number":   {Filterable: true},
                "document_url":   {Filterable: true},
                "created_at":     {Filterable: true},
            },
        },
    })
    if err != nil {
        log.Fatalf("Failed to create namespace: %v", err)
    }
    fmt.Printf(prettifyStruct(namespace))
}
```

```shell curl theme={null}
# 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 "Accept: application/json" \
  -H "Content-Type: application/json" \
  -H "Api-Key: $PINECONE_API_KEY" \
  -H "X-Pinecone-Api-Version: 2026-07" \
  -d '{
        "name": "example-namespace",
        "schema": {
          "fields": { 
            "document_id": {"filterable": true},
            "document_title": {"filterable": true},
            "chunk_number": {"filterable": true},
            "document_url": {"filterable": true},
            "created_at": {"filterable": true}
          }
        }
      }'
```
:::

The response will look like the following:

:::code-group
```json curl theme={null}
{
    "name": "example-namespace",
    "record_count": "0",
    "size_bytes": "0",
    "schema": {
        "fields": {
            "document_title": {
                "filterable": true
            },
            "document_url": {
                "filterable": true
            },
            "chunk_number": {
                "filterable": true
            },
            "document_id": {
                "filterable": true
            },
            "created_at": {
                "filterable": true
            }
        }
    }
}
```
:::

:::callout{intent="note"}
`size_bytes` is approximate, so a value of `0` doesn't always mean the namespace is empty. Data written before size tracking reads as `0`, and recently deleted data can still be counted until compaction rewrites the underlying files.
:::

## List all namespaces in an index

Use the [`list_namespaces`](/guides/database-2026-07-data-plane-listnamespaces) operation to list all namespaces in a serverless index.

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 also includes a `pagination_token` that you can use to get the next batch of namespaces. When the response doesn't include a `pagination_token`, there are no more namespaces to return.

:::code-group
```python Python theme={null}
# Not supported with pinecone["grpc"] extras installed
from pinecone import Pinecone

pc = Pinecone(api_key="YOUR_API_KEY")

index = pc.Index(host="INDEX_HOST")

# Implicit pagination using a generator function
for namespace in index.list_namespaces():
    print(namespace.name, ":", namespace.record_count)

# Manual pagination
namespaces = index.list_namespaces_paginated(
    limit=2,
    pagination_token="eyJza2lwX3Bhc3QiOiIxMDEwMy0="
)

print(namespaces)
```

```javascript JavaScript theme={null}
import { Pinecone } from '@pinecone-database/pinecone';

const pc = new Pinecone({ apiKey: 'YOUR_API_KEY' })

// To get the unique host for an index, 
// see https://docs.pinecone.io/guides/manage-data/target-an-index
var index = pinecone.Index(host: "INDEX_HOST");

const namespaceList = await index.listNamespaces();

console.log(namespaceList);
```

```java Java theme={null}
import io.pinecone.clients.AsyncIndex;
import io.pinecone.clients.Index;
import io.pinecone.configs.PineconeConfig;
import io.pinecone.configs.PineconeConnection;
import io.pinecone.proto.ListNamespacesResponse;
import org.openapitools.db_data.client.ApiException;

public class Namespaces {
    public static void main(String[] args) throws ApiException {
        PineconeConfig config = new PineconeConfig("YOUR_API_KEY");
        // To get the unique host for an index, 
        // see https://docs.pinecone.io/guides/manage-data/target-an-index
        config.setHost("INDEX_HOST");
        PineconeConnection connection = new PineconeConnection(config);

        Index index = new Index(config, connection, "docs-example");

        // List all namespaces with default pagination limit (100)
        ListNamespacesResponse listNamespacesResponse = index.listNamespaces(null, null);

        // List all namespaces with pagination limit of 2
        ListNamespacesResponse listNamespacesResponseWithLimit = index.listNamespaces(2);

        // List all namespaces with pagination limit and token
        ListNamespacesResponse listNamespacesResponsePaginated = index.listNamespaces(5, "eyJza2lwX3Bhc3QiOiIxMDEwMy0=");

        System.out.println(listNamespacesResponseWithLimit);
    }
}
```

```go Go theme={null}
package main

import (
    "context"
    "encoding/json"
    "fmt"
    "log"

    "github.com/pinecone-io/go-pinecone/v4/pinecone"
)

func prettifyStruct(obj interface{}) string {
  	bytes, _ := json.MarshalIndent(obj, "", "  ")
    return string(bytes)
}

func main() {
    ctx := context.Background()

    pc, err := pinecone.NewClient(pinecone.NewClientParams{
        ApiKey: "YOUR_API_KEY",
    })
    if err != nil {
        log.Fatalf("Failed to create Client: %v", err)
    }

    // To get the unique host for an index, 
    // see https://docs.pinecone.io/guides/manage-data/target-an-index
    idxConnection, err := pc.Index(pinecone.NewIndexConnParams{Host: "INDEX_HOST"})
    if err != nil {
        log.Fatalf("Failed to create IndexConnection for Host: %v", err)
    } 

    limit := uint32(10)
    namespaces, err := idxConnection.ListNamespaces(ctx, &pinecone.ListNamespacesParams{
        Limit: &limit,
    })
    if err != nil {
        log.Fatalf("Failed to list namespaces: %v", err)
    }
    fmt.Printf(prettifyStruct(namespaces))
}
```

```shell curl theme={null}
PINECONE_API_KEY="YOUR_API_KEY"
INDEX_HOST="INDEX_HOST"

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

The response will look like the following:

:::code-group
```plaintext Python theme={null}
# Implicit pagination (print output from: for n in index.list_namespaces(): print(n.name, ":", n.record_count))
example-namespace : 20000
example-namespace2 : 10500
example-namespace3 : 10000
...

# Manual pagination (response from list_namespaces_paginated())
{
    "namespaces": [
        {"name": "example-namespace", "record_count": "20000"},
        {"name": "example-namespace2", "record_count": "10500"}
    ],
    "pagination": {"next": "Tm90aGluZyB0byBzZWUgaGVyZQo="}
}
```

```javascript JavaScript theme={null}
{
  namespaces: [
    { name: 'example-namespace', recordCount: '20000', sizeBytes: '1048576' },
    { name: 'example-namespace2', recordCount: '10500', sizeBytes: '550502' },
    ...
  ],
  pagination: "Tm90aGluZyB0byBzZWUgaGVyZQo="
}
```

```java Java theme={null}
namespaces {
  name: "example-namespace"
  record_count: 20000
}
namespaces {
  name: "example-namespace2"
  record_count: 10500
}
pagination {
  next: "eyJza2lwX3Bhc3QiOiJlZDVhYzFiNi1kMDFiLTQ2NTgtYWVhZS1hYjJkMGI2YzBiZjQiLCJwcmVmaXgiOm51bGx9"
}
```

```go Go theme={null}
{
  "Namespaces": [
    {
      "name": "example-namespace",
      "record_count": 20000
    },
    {
      "name": "example-namespace2",
      "record_count": 10500
    },
    ...
  ],
  "Pagination": {
    "next": "eyJza2lwX3Bhc3QiOiIyNzQ5YTU1YS0zZTQ2LTQ4MDItOGFlNi1hZTJjZGNkMTE5N2IiLCJwcmVmaXgiOm51bGx9"
  }
}
```

```json curl theme={null}
{
  "namespaces": [
    {
      "name": "example-namespace",
      "record_count": "20000",
      "size_bytes": "1048576"
    },
    {
      "name": "example-namespace2",
      "record_count": "10500",
      "size_bytes": "550502"
    },
    ...
  ],
  "pagination": {
    "next": "Tm90aGluZyB0byBzZWUgaGVyZQo="
  }
}
```
:::

## Describe a namespace

Use the [`describe_namespace`](/guides/database-2026-07-data-plane-describenamespace) operation to get details about a namespace in a serverless index, including the total number of vectors in the namespace.

:::code-group
```python Python theme={null}
# Not supported with pinecone["grpc"] extras installed
from pinecone import Pinecone

pc = Pinecone(api_key="YOUR_API_KEY")

index = pc.Index(host="INDEX_HOST")

namespace = index.describe_namespace(namespace="example-namespace")

print(namespace)
```

```javascript JavaScript theme={null}
import { Pinecone } from '@pinecone-database/pinecone';

const pc = new Pinecone({ apiKey: 'YOUR_API_KEY' })

const index = pc.index('docs-example');

const namespace = await index.describeNamespace('example-namespace');

console.log(namespace);
```

```java Java theme={null}
import io.pinecone.clients.Index;
import io.pinecone.configs.PineconeConfig;
import io.pinecone.configs.PineconeConnection;
import io.pinecone.proto.NamespaceDescription;

import org.openapitools.db_data.client.ApiException;

public class Namespaces {
    public static void main(String[] args) throws ApiException {
        PineconeConfig config = new PineconeConfig("YOUR_API_KEY");
        // To get the unique host for an index, 
        // see https://docs.pinecone.io/guides/manage-data/target-an-index
        config.setHost("INDEX_HOST");
        PineconeConnection connection = new PineconeConnection(config);

        Index index = new Index(config, connection, "docs-example");

        NamespaceDescription namespaceDescription = index.describeNamespace("example-namespace");

        System.out.println(namespaceDescription);
    }
}
```

```go Go theme={null}
package main

import (
    "context"
    "encoding/json"
    "fmt"
    "log"

    "github.com/pinecone-io/go-pinecone/v4/pinecone"
)

func prettifyStruct(obj interface{}) string {
  	bytes, _ := json.MarshalIndent(obj, "", "  ")
    return string(bytes)
}

func main() {
    ctx := context.Background()

    pc, err := pinecone.NewClient(pinecone.NewClientParams{
        ApiKey: "YOUR_API_KEY",
    })
    if err != nil {
        log.Fatalf("Failed to create Client: %v", err)
    }

    // To get the unique host for an index, 
    // see https://docs.pinecone.io/guides/manage-data/target-an-index
    idxConnection, err := pc.Index(pinecone.NewIndexConnParams{Host: "INDEX_HOST"})
    if err != nil {
        log.Fatalf("Failed to create IndexConnection for Host: %v", err)
    } 

    namespace, err := idxConnection.DescribeNamespace(ctx, "example-namespace")
    if err != nil {
        log.Fatalf("Failed to describe namespace: %v", err)
    }
    fmt.Printf(prettifyStruct(namespace))
}
```

```shell curl theme={null}
PINECONE_API_KEY="YOUR_API_KEY"
INDEX_HOST="INDEX_HOST"
NAMESPACE="NAMESPACE_NAME"  # To target the default namespace, use "__default__".

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

The response will look like the following:

:::code-group
```python Python theme={null}
{
    "name": "example-namespace",
    "record_count": "20000"
}
```

```javascript JavaScript theme={null}
{ name: 'example-namespace', recordCount: '20000', sizeBytes: '1048576' }
```

```java Java theme={null}
name: "example-namespace"
record_count: 20000
```

```go Go theme={null}
{
  "name": "example-namespace",
  "record_count": 20000
}
```

```json curl theme={null}
{
  "name": "example-namespace",
  "record_count": "20000",
  "size_bytes": "1048576"
}
```
:::

:::callout{intent="note"}
The Python, Java, and Go SDKs don't return `size_bytes` yet, so it appears in the curl and JavaScript responses only.
:::

## Delete a namespace

Use the [`delete_namespace`](/guides/database-2026-07-data-plane-deletenamespace) operation to delete a namespace in a serverless index.

:::callout{intent="warning"}
Deleting a namespace is irreversible. All data in the namespace is permanently deleted.
:::

:::code-group
```python Python theme={null}
# Not supported with pinecone["grpc"] extras installed
from pinecone import Pinecone

pc = Pinecone(api_key="YOUR_API_KEY")

index = pc.Index(host="INDEX_HOST")

index.delete_namespace(namespace="example-namespace")
```

```javascript JavaScript theme={null}
import { Pinecone } from '@pinecone-database/pinecone';

const pc = new Pinecone({ apiKey: 'YOUR_API_KEY' })

const index = pc.index('INDEX_NAME', 'INDEX_HOST');

const namespace = await index.deleteNamespace('example-namespace');

console.log(namespace);
```

```java Java theme={null}
import io.pinecone.clients.Index;
import io.pinecone.configs.PineconeConfig;
import io.pinecone.configs.PineconeConnection;

import java.util.concurrent.ExecutionException;

public class DeleteNamespace {
    public static void main(String[] args) throws ExecutionException, InterruptedException {
        PineconeConfig config = new PineconeConfig("YOUR_API_KEY");
      // To get the unique host for an index, 
      // see https://docs.pinecone.io/guides/manage-data/target-an-index
        config.setHost("INDEX_HOST");
        PineconeConnection connection = new PineconeConnection(config);

        Index index = new Index(config, connection, "docs-example");

        index.deleteNamespace("example-namespace");
    }
}
```

```go Go theme={null}
package main

import (
    "context"
    "encoding/json"
    "fmt"
    "log"

    "github.com/pinecone-io/go-pinecone/v4/pinecone"
)

func prettifyStruct(obj interface{}) string {
  	bytes, _ := json.MarshalIndent(obj, "", "  ")
    return string(bytes)
}

func main() {
    ctx := context.Background()

    pc, err := pinecone.NewClient(pinecone.NewClientParams{
        ApiKey: "YOUR_API_KEY",
    })
    if err != nil {
        log.Fatalf("Failed to create Client: %v", err)
    }

    // To get the unique host for an index, 
    // see https://docs.pinecone.io/guides/manage-data/target-an-index
    idxConnection, err := pc.Index(pinecone.NewIndexConnParams{Host: "INDEX_HOST"})
    if err != nil {
        log.Fatalf("Failed to create IndexConnection for Host: %v", err)
    } 

    err := idxConnection.DeleteNamespace(ctx, "example-namespace")
    if err != nil {
        log.Fatalf("Failed to delete namespace: %v", err)
    }
}
```

```shell curl theme={null}
PINECONE_API_KEY="YOUR_API_KEY"
INDEX_HOST="INDEX_HOST"
NAMESPACE="NAMESPACE_NAME" # To target the default namespace, use "__default__".

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

## Rename a namespace

Pinecone doesn't support renaming namespaces directly. Instead, you must [delete the records](/guides/manage-data-delete-data) in the namespace and [upsert the records](/guides/index-data-upsert-data) to a new namespace.

## Move records to a new namespace

Pinecone doesn't support moving records between namespaces directly. Instead, you must [delete the records](/guides/manage-data-delete-data) in the old namespace and [upsert the records](/guides/index-data-upsert-data) to the new namespace.

## Related pages

- [Account management](./account-management-index.md)
- [Admin](./admin-2-index.md)
- [Admin](./admin-index.md)
- [APIs](./apis-index.md)
- [Architecture](./architecture-index.md)
- [Assistants](./assistants-index.md)
- [Bring Your Own Cloud](./bring-your-own-cloud-index.md)
- [Build an assistant](./build-an-assistant-index.md)
- [Build an integration](./build-an-integration-index.md)
- [Changelog](./changelog-index.md)

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