crm_batch_update_contacts · HubSpot MCP Server MCP

WHAT IT DOES

What crm_batch_update_contacts does on HubSpot MCP Server

AI agents use crm_batch_update_contacts 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 crm_batch_update_contacts needs a policy

This tool modifies contact records in HubSpot's CRM system. While updates are reversible (Write rather than Destructive), the batch nature means a single misuse could affect many contacts simultaneously, creating significant blast radius. Severity is high due to the potential scope of impact on business-critical CRM data.

From the tool's definition Tool name includes 'batch_update' and description states 'Update multiple contacts in a single request'. The 'update' verb and batch operation scope indicate reversible data modification affecting potentially many contact records.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

crm_batch_update_contacts Rate-limited

crm_batch_update_contacts 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": {
    "crm_batch_update_contacts": {
      "limits": [
        {
          "counter": "crm_batch_update_contacts_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 crm_batch_update_contacts

What does the crm_batch_update_contacts tool do? +

Update multiple contacts 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 crm_batch_update_contacts? +

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

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

Can I rate-limit crm_batch_update_contacts? +

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

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

crm_batch_update_contacts 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.