emails_batch_create · HubSpot MCP Server MCP: Risk & Policy

WHAT IT DOES

What emails_batch_create does on HubSpot MCP Server

AI agents use emails_batch_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_batch_create needs a policy

Creating email records is a reversible Write operation that modifies data (adds new email entries to HubSpot CRM) but does not execute arbitrary code, delete data, or move funds. The batch nature amplifies the blast radius from creating a single email to potentially hundreds, warranting medium rather than low severity.

From the tool's definition emails_batch_create creates multiple email records in a single request without deletion or irreversible modification. The tool name explicitly states 'create' and the description confirms it creates email records.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

emails_batch_create Rate-limited

emails_batch_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_batch_create": {
      "limits": [
        {
          "counter": "emails_batch_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_batch_create

What does the emails_batch_create tool do? +

Create multiple email records in a single request. 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_batch_create? +

Register the HubSpot MCP Server MCP server in PolicyLayer and add a rule for emails_batch_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_batch_create? +

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

Can I rate-limit emails_batch_create? +

Yes. Add a rate_limit block to the emails_batch_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_batch_create completely? +

Set action: deny in the PolicyLayer policy for emails_batch_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_batch_create? +

emails_batch_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.