upsert_contact · GoHighLevel MCP Server MCP: Risk & Policy

WHAT IT DOES

What upsert_contact does on GoHighLevel MCP Server

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

WHY IT NEEDS A POLICY

Why upsert_contact needs a policy

This tool reversibly modifies data (creates new contacts or updates existing ones) without deleting or destroying records. It is a Write operation rather than Destructive because modifications are reversible and no data is permanently erased.

From the tool's definition Tool performs 'Create or update contact' operations on a CRM database. The description explicitly states it creates or modifies contact records based on email/phone matching, with 'smart merge' indicating conditional write logic.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

upsert_contact Rate-limited

upsert_contact 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": {
    "upsert_contact": {
      "limits": [
        {
          "counter": "upsert_contact_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 GoHighLevel MCP Server, so you can run agents against it safely.

FAQ

Questions about upsert_contact

What does the upsert_contact tool do? +

Create or update contact based on email/phone (smart merge). It is categorised as a Write tool in the GoHighLevel 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 upsert_contact? +

Register the GoHighLevel MCP Server MCP server in PolicyLayer and add a rule for upsert_contact: 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 GoHighLevel MCP Server. Nothing to install.

What risk level is upsert_contact? +

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

Can I rate-limit upsert_contact? +

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

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

upsert_contact is provided by the GoHighLevel MCP Server MCP server (tailormadeweddings/gohighlevel-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.