Get all subscription definitions for the portal
AI agents call communications_get_subscription_definitions to retrieve information from HubSpot MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves subscription definition metadata from the HubSpot portal. It queries existing data without creating, modifying, deleting, or executing any operations. The action is read-only with no side effects, making it a Read category tool with low severity since it only exposes configuration/metadata information.
From the tool's definition Tool name includes 'get' and description states 'Get all subscription definitions' - a retrieval operation with no modification or execution.
Attacks that exploit this kind of access
Get all subscription definitions for the portal. It is categorised as a Read tool in the HubSpot MCP Server MCP Server, which means it retrieves data without modifying state.
Register the HubSpot MCP Server MCP server in PolicyLayer and add a rule for communications_get_subscription_definitions: 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 HubSpot MCP Server. Nothing to install.
communications_get_subscription_definitions is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the communications_get_subscription_definitions 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 communications_get_subscription_definitions. 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.
communications_get_subscription_definitions is provided by the HubSpot MCP Server MCP server (kozo93/hubspot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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