App Topology lets you query data about your resources and applications from multiple sources, and then view the correlated data as a topology graph. For example, you can view all agents that have a specific vulnerability.
By bringing together data across multiple sources, App Topology helps you to understand relationships, dependencies, and context in one place.
In Cloud Hub you can view correlated data for several domains, including health and troubleshooting, deployment, and security. App Topology also provides topology graphs that are focused on specific uses in other areas of Google Cloud. To learn more, see Types of topologies.
App Topology pricing
Starting October 15, 2026, the App Topology API transitions to a usage-based billing model that includes a daily free data usage allotment.
The new billing model applies to all App Topology API usage, including topology graphs generated within Cloud Hub, Gemini Enterprise Agent Platform, and Cloud Monitoring. The system will meter and bill your usage according to the following rates:
| Daily Free Allotment (Per Project) | Additional Usage Rates | |
|---|---|---|
| Queries | 100 queries | $0.01 per query |
| Nodes in topology graphs | 15,000 nodes | $0.00075 per node |