Get all subscription definitions for the portal
How to control communications_get_subscription_definitions ↓
AI agents call communications_get_subscription_definitions to retrieve information from HubSpot MCP 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 data from HubSpot without side effects. It performs a simple read query against the portal's subscription configuration. The blast radius is minimal — exposure would allow reading subscription settings but not modifying them, accessing customer data, or triggering financial transactions.
From the tool's definition Tool name contains 'get' and description states 'Get all subscription definitions' — pure retrieval with no modification, deletion, or execution of external operations.
Documented attack patterns abuse exactly the kind of access communications_get_subscription_definitions gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and HubSpot MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for communications_get_subscription_definitions:
{
"version": "1",
"default": "deny",
"tools": {
"communications_get_subscription_definitions": {}
}
}communications_get_subscription_definitions is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Get all subscription definitions for the portal. It is categorised as a Read tool in the HubSpot MCP MCP Server, which means it retrieves data without modifying state.
Register the HubSpot 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. 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 (shinzo-labs/hubspot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 112 HubSpot MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
112 HubSpot MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.