communications_update_preferences · HubSpot MCP Server MCP

WHAT IT DOES

What communications_update_preferences does on HubSpot MCP Server

AI agents use communications_update_preferences to create or update resources in HubSpot MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your HubSpot MCP Server environment.

WHY IT NEEDS A POLICY

Why communications_update_preferences needs a policy

This tool modifies contact communication preference settings in HubSpot's CRM system. It is a Write operation because it creates or modifies data reversibly—preference updates can be changed again. Severity is medium because misuse could alter legitimate contact communication settings, affecting customer interactions and compliance, but the operation is reversible and doesn't cause data loss or financial harm.

From the tool's definition Tool name 'communications_update_preferences' and description 'Update communication preferences for a contact' indicate modification of contact data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

communications_update_preferences Rate-limited

communications_update_preferences stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "communications_update_preferences": {
      "limits": [
        {
          "counter": "communications_update_preferences_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches HubSpot MCP Server, so you can run agents against it safely.

FAQ

Questions about communications_update_preferences

What does the communications_update_preferences tool do? +

Update communication preferences for a contact. It is categorised as a Write tool in the HubSpot MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on communications_update_preferences? +

Register the HubSpot MCP Server MCP server in PolicyLayer and add a rule for communications_update_preferences: 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.

What risk level is communications_update_preferences? +

communications_update_preferences is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit communications_update_preferences? +

Yes. Add a rate_limit block to the communications_update_preferences 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.

How do I block communications_update_preferences completely? +

Set action: deny in the PolicyLayer policy for communications_update_preferences. 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.

What MCP server provides communications_update_preferences? +

communications_update_preferences 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.