API Overview

By calling SMN APIs, you can use all functions provided by SMN, for example, creating a topic and adding a subscription.

**Table 1** API description
Category	Description
Topics	Create, update, and delete a topic.
Subscriptions	Query subscriptions, add a subscription, and delete a subscription.
Templates	Create, modify, and delete a message template.
Message publishing	Publish a message, publishing a detection message, and obtain the HTTP detection result.
Resource tags	Query resources by tag, add resource tags, and query tags.
Version querying	Query SMN API versions and information about the SMN API v2 version.
Cloud logs	Bind a cloud log to a topic, query cloud logs, and update a cloud log.
Message filter policies of subscribers	Create message filter policies for a subscriber, update message filter policies of subscribers, and delete message filter policies of subscribers.