[READ] [FREE] List all HubSpot CRM object types (contacts, companies, deals, custom objects).
AI agents call hubspot.schema.list to retrieve information from G Gremlin Hubspot without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves metadata about available CRM object schema types. It performs a read-only query operation with no side effects, no data modification, and no execution of arbitrary code. The blast radius of misuse is minimal—an attacker gains only knowledge of the object structure, which is typically non-sensitive schema information in CRM systems.
From the tool's definition Tool name and description explicitly mark it as [READ] and [FREE]. It "List[s] all HubSpot CRM object types" with no modification or deletion capability.
Attacks that exploit this kind of access
[READ] [FREE] List all HubSpot CRM object types (contacts, companies, deals, custom objects). It is categorised as a Read tool in the G Gremlin Hubspot MCP Server, which means it retrieves data without modifying state.
Register the G Gremlin Hubspot MCP server in PolicyLayer and add a rule for hubspot.schema.list: 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 G Gremlin Hubspot. Nothing to install.
hubspot.schema.list is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the hubspot.schema.list 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.
Set action: deny in the PolicyLayer policy for hubspot.schema.list. 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.
hubspot.schema.list is provided by the G Gremlin Hubspot MCP server (mikeheilmann1024/g-gremlin-hubspot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →