AI agents use create_backup_plan_association to create or update resources in Storage — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Storage environment.
This tool creates a new association between a backup plan and a resource, which modifies system state by establishing a new backup policy linkage. This is a reversible Write operation (the association can be deleted via delete_backup_plan_association). It does not execute arbitrary code, delete data, move money, or irreversibly destroy information.
From the tool's definition Tool name 'create_backup_plan_association' and description 'Creates a new backup plan association' indicate creation of a new configuration/relationship object.
Attacks that exploit this kind of access
Creates a new backup plan association. It is categorised as a Write tool in the Storage MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Storage MCP server in PolicyLayer and add a rule for create_backup_plan_association: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Storage. Nothing to install.
create_backup_plan_association is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_backup_plan_association rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for create_backup_plan_association. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
create_backup_plan_association is provided by the Storage MCP server (@google-cloud/storage-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.