emails_create · HubSpot MCP Server MCP: Risk & Policy

WHAT IT DOES

What emails_create does on HubSpot MCP Server

AI agents use emails_create 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 emails_create needs a policy

This tool creates a new email record in the HubSpot CRM system, which is a reversible write operation. While it modifies data, it does not delete data irreversibly (not Destructive), execute arbitrary code (not Execute), move money (not Financial), or merely retrieve data (not Read).

From the tool's definition Tool name 'emails_create' and description 'Create a new email record' indicate creation of data without permanent deletion or financial transactions.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

emails_create Rate-limited

emails_create 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": {
    "emails_create": {
      "limits": [
        {
          "counter": "emails_create_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 emails_create

What does the emails_create tool do? +

Create a new email record. 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 emails_create? +

Register the HubSpot MCP Server MCP server in PolicyLayer and add a rule for emails_create: 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 emails_create? +

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

Can I rate-limit emails_create? +

Yes. Add a rate_limit block to the emails_create 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 emails_create completely? +

Set action: deny in the PolicyLayer policy for emails_create. 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 emails_create? +

emails_create 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.