AI agents use create_form_tool to create or update resources in Apps Script MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Apps Script MCP environment.
Creating a new Google Form is a Write action—it creates data/resources that persist but can be reversed (the form can be deleted). It has a moderate blast radius: an AI could create many forms, spam users, or waste resources, but the action is reversible and doesn't involve financial transactions, code execution, or data destruction.
From the tool's definition Tool description states 'Create a new Google Form', which is a create operation that adds a new resource to Google's ecosystem.
Documented attack patterns abuse exactly the kind of access create_form_tool gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Apps Script MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for create_form_tool:
{
"version": "1",
"default": "deny",
"tools": {
"create_form_tool": {
"limits": [
{
"counter": "create_form_tool_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_form_tool 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 Google Form. It is categorised as a Write tool in the Apps Script MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Apps Script MCP server in PolicyLayer and add a rule for create_form_tool: 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 Apps Script MCP. Nothing to install.
create_form_tool 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_form_tool 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_form_tool. 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_form_tool is provided by the Apps Script MCP server (sam-ent/google-automation-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Apps Script MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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60 Apps Script MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.