hubspot_list_companies

THE RISK

Low Risk

Why hubspot_list_companies needs a policy

This tool queries and retrieves company records from HubSpot CRM with pagination support. It has no side effects, does not modify data, and presents no execution or financial risk. It is a straightforward data retrieval operation, consistent with the Read category for list/fetch operations.

From the tool's definition 'List companies in HubSpot with pagination' — retrieves company data without modification capability.

Documented attack patterns abuse exactly the kind of access hubspot_list_companies gives an agent:

POLICY

How to control hubspot_list_companies

PolicyLayer is an MCP gateway — it sits between your AI agents and HubSpot MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for hubspot_list_companies:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "hubspot_list_companies": {}
  }
}

hubspot_list_companies is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register HubSpot MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More HubSpot MCP Server tools

Write hubspot_create_contact Create a new contact in HubSpot Write hubspot_create_deal Create a new deal in HubSpot Write hubspot_update_contact Update an existing contact in HubSpot Write hubspot_update_deal Update an existing deal in HubSpot Read hubspot_get_company Get a specific company by ID Read hubspot_get_contact Get a specific contact by ID Read hubspot_get_deal Get a specific deal by ID Read hubspot_get_deal_history Get the complete history of changes to a deal

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about hubspot_list_companies

What does the hubspot_list_companies tool do? +

List companies in HubSpot with pagination. It is categorised as a Read tool in the HubSpot MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on hubspot_list_companies? +

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

hubspot_list_companies is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit hubspot_list_companies? +

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

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

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

Enforce policy on every HubSpot MCP Server tool call.

Start from HubSpot MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →