crm_create_lead

Create a new lead with validated properties

SERVERHubSpot MCP SOURCEblacksand-software/hubspot-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/blacksand-software-hubspot-mcp/crm-create-lead.md

WHAT IT DOES

What crm_create_lead does on HubSpot MCP

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

RISK

Why crm_create_lead is rated Medium

This tool creates new lead records in HubSpot CRM. While reversible (leads can be deleted), the creation of lead records represents a modification of the database state. It is Write rather than Read (retrieves nothing), Execute (does not run arbitrary code/commands), Destructive (not irreversible), or Financial (no money movement).

From the tool's definition Tool name 'crm_create_lead' and description 'Create a new lead with validated properties' indicate data creation. The verb 'Create' and context of HubSpot CRM operations confirm this is a write operation that adds new records to the system.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs crm_create_lead safely

PolicyLayer is an MCP gateway: it sits between your AI agents and HubSpot MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For crm_create_lead, this is the rule to start with:

crm_create_lead Rate-limited

crm_create_lead 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_create_lead": {
      "limits": [
        {
          "counter": "crm_create_lead_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect HubSpot MCP, apply this rule, and every crm_create_lead call is checked against it from then on.

FAQ

Questions about crm_create_lead

What does the crm_create_lead tool do? +

Create a new lead with validated properties. It is categorised as a Write tool in the HubSpot MCP 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_create_lead? +

Register the HubSpot MCP server in PolicyLayer and add a rule for crm_create_lead: 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. Nothing to install.

What risk level is crm_create_lead? +

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

Can I rate-limit crm_create_lead? +

Yes. Add a rate_limit block to the crm_create_lead 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_create_lead completely? +

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

crm_create_lead is provided by the HubSpot MCP server (blacksand-software/hubspot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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