hubspot.objects.upsert · G Gremlin Hubspot MCP

WHAT IT DOES

What hubspot.objects.upsert does on G Gremlin Hubspot

AI agents use hubspot.objects.upsert to create or update resources in G Gremlin Hubspot — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your G Gremlin Hubspot environment.

WHY IT NEEDS A POLICY

Why hubspot.objects.upsert needs a policy

An upsert operation creates new records or updates existing ones, which is a Write action. The server description explicitly calls out 'bulk upserts surpassing official API limits', meaning this tool could modify or create large numbers of CRM records at scale, giving it a high severity blast radius.

From the tool's definition Tool name 'hubspot.objects.upsert' implies create-or-update (upsert) operations on HubSpot CRM objects. Server description mentions 'bulk upserts' as a key capability.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

hubspot.objects.upsert Rate-limited

hubspot.objects.upsert 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": {
    "hubspot.objects.upsert": {
      "limits": [
        {
          "counter": "hubspot.objects.upsert_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 G Gremlin Hubspot, so you can run agents against it safely.

FAQ

Questions about hubspot.objects.upsert

What does the hubspot.objects.upsert tool do? +

hubspot.objects.upsert. It is categorised as a Write tool in the G Gremlin Hubspot MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on hubspot.objects.upsert? +

Register the G Gremlin Hubspot MCP server in PolicyLayer and add a rule for hubspot.objects.upsert: 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.

What risk level is hubspot.objects.upsert? +

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

Can I rate-limit hubspot.objects.upsert? +

Yes. Add a rate_limit block to the hubspot.objects.upsert 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.objects.upsert completely? +

Set action: deny in the PolicyLayer policy for hubspot.objects.upsert. 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.objects.upsert? +

hubspot.objects.upsert 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.