Topics - List By Namespace

Service:: Service Bus

API Version:: 2026-01-01

Gets all the topics in a namespace.

GET https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ServiceBus/namespaces/{namespaceName}/topics?api-version=2026-01-01

With optional parameters:

GET https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ServiceBus/namespaces/{namespaceName}/topics?api-version=2026-01-01&$skip={$skip}&$top={$top}

URI Parameters

Name	In	Required	Type	Description
namespaceName	path	True	string minLength: 6 maxLength: 50	The namespace name
resourceGroupName	path	True	string minLength: 1 maxLength: 90	The name of the resource group. The name is case insensitive.
subscriptionId	path	True	string (uuid)	The ID of the target subscription. The value must be an UUID.
api-version	query	True	string minLength: 1	The API version to use for this operation.
$skip	query		integer (int32) maximum: 1000	Skip is only used if a previous operation returned a partial result. If a previous response contains a nextLink element, the value of the nextLink element will include a skip parameter that specifies a starting point to use for subsequent calls.
$top	query		integer (int32) minimum: 1 maximum: 1000	May be used to limit the number of results to the most recent N usageDetails.

Responses

Name	Type	Description
200 OK	SBTopicListResult	Azure operation completed successfully.
Other Status Codes	ErrorResponse	An unexpected error response.

Security

azure_auth

Azure Active Directory OAuth2 Flow.

Type: oauth2
Flow: implicit
Authorization URL: https://login.microsoftonline.com/common/oauth2/authorize

Scopes

Name	Description
user_impersonation	impersonate your user account

Examples

TopicGet

Sample request

HTTP

GET https://management.azure.com/subscriptions/5f750a97-50d9-4e36-8081-c9ee4c0210d4/resourceGroups/Default-ServiceBus-WestUS/providers/Microsoft.ServiceBus/namespaces/sdk-Namespace-1617/topics?api-version=2026-01-01

Sample response

Status code:: 200

{
  "value": [
    {
      "name": "sdk-topics-5488",
      "type": "Microsoft.ServiceBus/Namespaces/Topics",
      "id": "/subscriptions/5f750a97-50d9-4e36-8081-c9ee4c0210d4/resourceGroups/ArunMonocle/providers/Microsoft.ServiceBus/namespaces/sdk-Namespace-1617/topics/sdk-topics-5488",
      "properties": {
        "accessedAt": "0001-01-01T00:00:00Z",
        "autoDeleteOnIdle": "P10675199DT2H48M5.4775807S",
        "createdAt": "2017-05-26T20:50:31.4442694Z",
        "defaultMessageTimeToLive": "P10675199DT2H48M5.4775807S",
        "duplicateDetectionHistoryTimeWindow": "PT10M",
        "enableBatchedOperations": true,
        "enableExpress": true,
        "enablePartitioning": false,
        "maxMessageSizeInKilobytes": 10240,
        "maxSizeInMegabytes": 10240,
        "requiresDuplicateDetection": false,
        "sizeInBytes": 0,
        "status": "Active",
        "subscriptionCount": 0,
        "supportOrdering": true,
        "updatedAt": "2017-05-26T20:52:32.2092264Z"
      }
    }
  ]
}

Definitions

Name	Description
createdByType	The type of identity that created the resource.
EntityStatus	Entity status.
ErrorAdditionalInfo	The resource management error additional info.
ErrorResponse	The resource management error response.
ErrorResponseError	The error object.
MessageCountDetails	Message Count Details.
SBTopic	Description of topic resource.
SBTopicListResult	The response of a SBTopic list operation.
systemData	Metadata pertaining to creation and last modification of the resource.

createdByType

Enumeration

The type of identity that created the resource.

Value	Description
User
Application
ManagedIdentity
Key

EntityStatus

Enumeration

Entity status.

Value	Description
Active
Disabled
Restoring
SendDisabled
ReceiveDisabled
Creating
Deleting
Renaming
Unknown

ErrorAdditionalInfo

Object

The resource management error additional info.

Name	Type	Description
info		The additional info.
type	string	The additional info type.

ErrorResponse

Object

The resource management error response.

Name	Type	Description
error	ErrorResponseError	The error object.

ErrorResponseError

Object

The error object.

Name	Type	Description
additionalInfo	ErrorAdditionalInfo[]	The error additional info.
code	string	The error code.
details	ErrorResponse[]	The error details.
message	string	The error message.
target	string	The error target.

MessageCountDetails

Object

Message Count Details.

Name	Type	Description
activeMessageCount	integer (int64)	Number of active messages in the queue, topic, or subscription.
deadLetterMessageCount	integer (int64)	Number of messages that are dead lettered.
scheduledMessageCount	integer (int64)	Number of scheduled messages.
transferDeadLetterMessageCount	integer (int64)	Number of messages transferred into dead letters.
transferMessageCount	integer (int64)	Number of messages transferred to another queue, topic, or subscription.

SBTopic

Object

Description of topic resource.

Name	Type	Description
id	string (arm-id)	Fully qualified resource ID for the resource. E.g. "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{resourceProviderNamespace}/{resourceType}/{resourceName}"
location	string	The geo-location where the resource lives
name	string	The name of the resource
properties.accessedAt	string (date-time)	Last time the message was sent, or a request was received, for this topic.
properties.autoDeleteOnIdle	string (duration)	ISO 8601 timespan idle interval after which the topic is automatically deleted. The minimum duration is 5 minutes.
properties.countDetails	MessageCountDetails	Message count details
properties.createdAt	string (date-time)	Exact time the message was created.
properties.defaultMessageTimeToLive	string (duration)	ISO 8601 Default message timespan to live value. This is the duration after which the message expires, starting from when the message is sent to Service Bus. This is the default value used when TimeToLive is not set on a message itself.
properties.duplicateDetectionHistoryTimeWindow	string (duration)	ISO8601 timespan structure that defines the duration of the duplicate detection history. The default value is 10 minutes.
properties.enableBatchedOperations	boolean	Value that indicates whether server-side batched operations are enabled.
properties.enableExpress	boolean	Value that indicates whether Express Entities are enabled. An express topic holds a message in memory temporarily before writing it to persistent storage.
properties.enablePartitioning	boolean	Value that indicates whether the topic to be partitioned across multiple message brokers is enabled.
properties.maxMessageSizeInKilobytes	integer (int64)	Maximum size (in KB) of the message payload that can be accepted by the topic. This property is only used in Premium today and default is 1024.
properties.maxSizeInMegabytes	integer (int32)	Maximum size of the topic in megabytes, which is the size of the memory allocated for the topic. Default is 1024.
properties.requiresDuplicateDetection	boolean	Value indicating if this topic requires duplicate detection.
properties.sizeInBytes	integer (int64)	Size of the topic, in bytes.
properties.status	EntityStatus	Enumerates the possible values for the status of a messaging entity.
properties.subscriptionCount	integer (int32)	Number of subscriptions.
properties.supportOrdering	boolean	Value that indicates whether the topic supports ordering.
properties.updatedAt	string (date-time)	The exact time the message was updated.
properties.userMetadata	string	Gets and Sets Metadata of User.
systemData	systemData	Azure Resource Manager metadata containing createdBy and modifiedBy information.
type	string	The type of the resource. E.g. "Microsoft.Compute/virtualMachines" or "Microsoft.Storage/storageAccounts"

SBTopicListResult

Object

The response of a SBTopic list operation.

Name	Type	Description
nextLink	string (uri)	The link to the next page of items
value	SBTopic[]	The SBTopic items on this page

systemData

Object

Metadata pertaining to creation and last modification of the resource.

Name	Type	Description
createdAt	string (date-time)	The timestamp of resource creation (UTC).
createdBy	string	The identity that created the resource.
createdByType	createdByType	The type of identity that created the resource.
lastModifiedAt	string (date-time)	The timestamp of resource last modification (UTC)
lastModifiedBy	string	The identity that last modified the resource.
lastModifiedByType	createdByType	The type of identity that last modified the resource.