create_deal · HubSpot MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_deal does on HubSpot MCP Server

AI agents use create_deal 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 create_deal needs a policy

This tool creates a new deal record, which is a reversible write operation. It modifies HubSpot's database by adding a new entry but does not execute arbitrary code, delete data, or move money. The severity is medium because creating deals can have business implications (it may trigger workflows or notifications) but is reversible via deletion or update operations.

From the tool's definition Tool name is 'create_deal' and description states 'Create a new deal in HubSpot'. The verb 'create' indicates a write operation that modifies data in the CRM.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_deal Rate-limited

create_deal 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": {
    "create_deal": {
      "limits": [
        {
          "counter": "create_deal_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 create_deal

What does the create_deal tool do? +

Create a new deal in HubSpot. 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 create_deal? +

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

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

Can I rate-limit create_deal? +

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

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

create_deal is provided by the HubSpot MCP Server MCP server (manhar-chaurasia/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.