AI agents use create_calendar 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 a new calendar resource, which is a reversible write operation. It does not execute arbitrary code, delete data, move money, or have destructive effects. The blast radius is low since calendar creation is a standard business operation with minimal side effects in a CRM context.
From the tool's definition Tool name 'create_calendar' and description 'Create a new calendar in GoHighLevel' explicitly indicate a creation/write operation that adds new data to the CRM.
Documented attack patterns abuse exactly the kind of access create_calendar 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_calendar:
{
"version": "1",
"default": "deny",
"tools": {
"create_calendar": {
"limits": [
{
"counter": "create_calendar_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_calendar 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 calendar in GoHighLevel. 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_calendar: 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_calendar 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_calendar 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_calendar. 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_calendar 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.
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255 GoHighLevel MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.