Manage namespaces ↗

Summary: Create and manage namespaces in serverless indexes.

Original Documentation

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Fetch the complete documentation index at: https://docs.pinecone.io/llms.txt Use this file to discover all available pages before exploring further.

Create and manage namespaces in serverless indexes.

Create a namespace#

This feature is in early access and available only on the 2025-10 version of the API.

Namespaces are created automatically as you upsert records. However, you can also create namespaces ahead of time using the create_namespace operation. Specify a name for the namespace and, optionally, the metadata fields to index.

# 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: 2025-10" \
  -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:

{
    "name": "example-namespace",
    "record_count": "0",
    "schema": {
        "fields": {
            "document_title": {
                "filterable": true
            },
            "document_url": {
                "filterable": true
            },
            "chunk_number": {
                "filterable": true
            },
            "document_id": {
                "filterable": true
            },
            "created_at": {
                "filterable": true
            }
        }
    }
}

List all namespaces in an index#

Use the list_namespaces 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 does not include a pagination_token, there are no more namespaces to return.

# 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)

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);

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);
    }
}

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))
}

using Pinecone;

var pinecone = new PineconeClient("PINECONE_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");

var namespaces = await index.ListNamespacesAsync(new ListNamespacesRequest());

Console.WriteLine(namespaces);

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: 2025-10"

The response will look like the following:

# 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="}
}

{
  namespaces: [
    { name: 'example-namespace', recordCount: '20000' },
    { name: 'example-namespace2', recordCount: '10500' },
    ...
  ],
  pagination: "Tm90aGluZyB0byBzZWUgaGVyZQo="
}

namespaces {
  name: "example-namespace"
  record_count: 20000
}
namespaces {
  name: "example-namespace2"
  record_count: 10500
}
pagination {
  next: "eyJza2lwX3Bhc3QiOiJlZDVhYzFiNi1kMDFiLTQ2NTgtYWVhZS1hYjJkMGI2YzBiZjQiLCJwcmVmaXgiOm51bGx9"
}

{
  "Namespaces": [
    {
      "name": "example-namespace",
      "record_count": 20000
    },
    {
      "name": "example-namespace2",
      "record_count": 10500
    },
    ...
  ],
  "Pagination": {
    "next": "eyJza2lwX3Bhc3QiOiIyNzQ5YTU1YS0zZTQ2LTQ4MDItOGFlNi1hZTJjZGNkMTE5N2IiLCJwcmVmaXgiOm51bGx9"
  }
}

{
  "namespaces":[
    {"name":"example-namespace","recordCount":20000},
    {"name":"example-namespace2","recordCount":10500},
    ...
  ],
  "pagination":"Tm90aGluZyB0byBzZWUgaGVyZQo="
}

{
  "namespaces": [
    {
      "name": "example-namespace",
      "record_count": 20000
    },
    {
      "name": "example-namespace2",
      "record_count": 10500
    },
    ...
  ],
  "pagination": {
    "next": "Tm90aGluZyB0byBzZWUgaGVyZQo="
  }
}

Describe a namespace#

Use the describe_namespace operation to get details about a namespace in a serverless index, including the total number of vectors in the namespace.

# 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)

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);

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);
    }
}

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))
}

using Pinecone;

var pinecone = new PineconeClient("PINECONE_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");

var @namespace = await index.DescribeNamespaceAsync("example-namespace");

Console.WriteLine(@namespace);

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: 2025-10"

The response will look like the following:

{
    "name": "example-namespace",
    "record_count": "20000"
}

{ name: 'example-namespace', recordCount: '20000' }

name: "example-namespace"
record_count: 20000

{
  "name": "example-namespace",
  "record_count": 20000
}

{"name":"example-namespace","recordCount":20000}

{
  "name": "example-namespace",
  "record_count": 20000
}

Delete a namespace#

Use the delete_namespace operation to delete a namespace in a serverless index.

Deleting a namespace is irreversible. All data in the namespace is permanently deleted.

# 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")

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);

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");
    }
}

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)
    }
}

using Pinecone;

const pinecone = new PineconeClient("PINECONE_API_KEY");

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

await index.DeleteNamespaceAsync("example-namespace");

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: 2025-10"

Rename a namespace#

Pinecone does not support renaming namespaces directly. Instead, you must delete the records in the namespace and upsert the records to a new namespace.

Move records to a new namespace#

Pinecone does not support moving records between namespaces directly. Instead, you must delete the records in the old namespace and upsert the records to the new namespace.

Use the default namespace#

To use the default namespace for upserts, queries, or other data operations, set the namespace parameter to __default__, for example:

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")

results = index.search(
    namespace="example-namespace", 
    query={
        "inputs": {"text": "Disease prevention"}, 
        "top_k": 2
    },
    fields=["category", "chunk_text"]
)

print(results)

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 namespace = pc.index("INDEX_NAME", "INDEX_HOST").namespace("example-namespace");

const response = await namespace.searchRecords({
  query: {
    topK: 2,
    inputs: { text: 'Disease prevention' },
  },
  fields: ['chunk_text', 'category'],
});

console.log(response);

import io.pinecone.clients.Index;
import io.pinecone.configs.PineconeConfig;
import io.pinecone.configs.PineconeConnection;
import org.openapitools.db_data.client.ApiException;
import org.openapitools.db_data.client.model.SearchRecordsResponse;

import java.util.*;

public class SearchText {
    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, "integrated-dense-java");

        String query = "Disease prevention";
        List<String> fields = new ArrayList<>();
        fields.add("category");
        fields.add("chunk_text");

        // Search the dense index
        SearchRecordsResponse recordsResponse = index.searchRecordsByText(query,  "example-namespace", fields, 2, null, null);

        // Print the results
        System.out.println(recordsResponse);
    }
}

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", Namespace: "example-namespace"})
    if err != nil {
        log.Fatalf("Failed to create IndexConnection for Host: %v", err)
    } 

    res, err := idxConnection.SearchRecords(ctx, &pinecone.SearchRecordsRequest{
        Query: pinecone.SearchRecordsQuery{
            TopK: 2,
            Inputs: &map[string]interface{}{
                "text": "Disease prevention",
            },
        },
        Fields: &[]string{"chunk_text", "category"},
    })
    if err != nil {
        log.Fatalf("Failed to search records: %v", err)
    }
    fmt.Printf(prettifyStruct(res))
}

using Pinecone;

var pinecone = new PineconeClient("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");

var response = await index.SearchRecordsAsync(
    "example-namespace",
    new SearchRecordsRequest
    {
        Query = new SearchRecordsRequestQuery
        {
            TopK = 4,
            Inputs = new Dictionary<string, object?> { { "text", "Disease prevention" } },
        },
        Fields = ["category", "chunk_text"],
    }
);

Console.WriteLine(response);

INDEX_HOST="INDEX_HOST"
NAMESPACE="NAMESPACE_NAME"
PINECONE_API_KEY="YOUR_API_KEY"

curl "https://$INDEX_HOST/records/namespaces/$NAMESPACE/search" \
  -H "Accept: application/json" \
  -H "Content-Type: application/json" \
  -H "Api-Key: $PINECONE_API_KEY" \
  -H "X-Pinecone-Api-Version: unstable" \
  -d '{
        "query": {
            "inputs": {"text": "Disease prevention"},
            "top_k": 2
        },
        "fields": ["category", "chunk_text"]
     }'

Link last verified June 7, 2026. View original ↗

Source: Pinecone Docs

Link last verified: 2026-02-26