ghl_create_custom_field

Create a new custom field for custom objects or company (business). Supports various field types including text, number, options, date, file upload, etc.

SERVERGhl SOURCEghl-mcp-server

Medium RISK CLASS

Category Write

Parameters 124 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/ghl/ghl-create-custom-field.md

WHAT IT DOES

What ghl_create_custom_field does on Ghl

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

Parameter	Type	Required	Description
`name`	string	—	Field name (optional for some field types)
`options`	array	—	Options for the field (required for SINGLE_OPTIONS, MULTIPLE_OPTIONS, RADIO, CHECKBOX, TEXTBOX_LIST types)
`dataType`	string	Yes	Type of field to create
`fieldKey`	string	Yes	Field key. Format: "custom_object.{objectKey}.{fieldKey}" for custom objects. Example: "custom_object.pet.name"
`parentId`	string	Yes	ID of the parent folder for organization
`objectKey`	string	Yes	The object key. Format: "custom_object.{objectKey}" for custom objects. Example: "custom_object.pet"
`locationId`	string	—	GoHighLevel location ID (will use default if not provided)
`description`	string	—	Description of the field
`placeholder`	string	—	Placeholder text for the field
`showInForms`	boolean	—	Whether the field should be shown in forms
`maxFileLimit`	number	—	Maximum file limit for uploads (only for FILE_UPLOAD type)
`acceptedFormats`	string	—	Allowed file formats for uploads (only for FILE_UPLOAD type)

Parameters from the server's own tool schema.

RISK

Why ghl_create_custom_field is rated Medium

This tool creates new custom fields, which is a Write operation—it modifies the data structure of custom objects or company records by adding new field definitions. This is reversible (fields can typically be deleted or modified), so it does not rise to Destructive level.

From the tool's definition Tool description states 'Create a new custom field' which is a reversible data creation operation. The tool creates schema-level metadata (custom fields) for custom objects or company records.

Risk signalsAccepts URL/endpoint input (options[].url) · High parameter count (16 properties)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs ghl_create_custom_field safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Ghl, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For ghl_create_custom_field, this is the rule to start with:

ghl_create_custom_field Rate-limited

ghl_create_custom_field 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": {
    "ghl_create_custom_field": {
      "limits": [
        {
          "counter": "ghl_create_custom_field_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ghl, apply this rule, and every ghl_create_custom_field call is checked against it from then on.

FAQ

Questions about ghl_create_custom_field

What does the ghl_create_custom_field tool do? +

Create a new custom field for custom objects or company (business). Supports various field types including text, number, options, date, file upload, etc. It is categorised as a Write tool in the Ghl MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does ghl_create_custom_field accept? +

ghl_create_custom_field accepts 12 parameters: name, options, dataType, fieldKey, parentId, objectKey, locationId, description, placeholder, showInForms, maxFileLimit, acceptedFormats. Required: dataType, fieldKey, parentId, objectKey. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on ghl_create_custom_field? +

Register the Ghl MCP server in PolicyLayer and add a rule for ghl_create_custom_field: 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 Ghl. Nothing to install.

What risk level is ghl_create_custom_field? +

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

Can I rate-limit ghl_create_custom_field? +

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

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

ghl_create_custom_field is provided by the Ghl MCP server (ghl-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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