Create a new custom value for a location
AI agents use create_location_custom_value 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.
This tool creates new custom metadata/fields for a location entity in the CRM. It modifies the location configuration by adding new custom values, which is a reversible Write operation. It doesn't delete data (Destructive), execute arbitrary code (Execute), handle money (Financial), or trigger external system operations (Execute).
From the tool's definition Tool name 'create_location_custom_value' and description 'Create a new custom value for a location' indicate creation of new data without deletion or financial impact.
Documented attack patterns abuse exactly the kind of access create_location_custom_value gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and GoHighLevel MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for create_location_custom_value:
{
"version": "1",
"default": "deny",
"tools": {
"create_location_custom_value": {
"limits": [
{
"counter": "create_location_custom_value_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_location_custom_value 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.
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Create a new custom value for a location. 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.
Register the GoHighLevel MCP Server MCP server in PolicyLayer and add a rule for create_location_custom_value: 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.
create_location_custom_value is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_location_custom_value 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 create_location_custom_value. 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.
create_location_custom_value is provided by the GoHighLevel MCP Server MCP server (mastanley13/gohighlevel-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 255 GoHighLevel MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
255 GoHighLevel MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.