AI agents use fillForm to create or update resources in MCP Server Generator — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP Server Generator environment.
Without a description, confidence is reduced. The name 'fillForm' indicates a write operation that creates or modifies data (form submission typically results in data creation/modification). Given the server's purpose of managing MCP configurations and the presence of other write-like tools (addComment, addIssueToSprint, assignIssue), this is classified as Write rather than Execute.
From the tool's definition Tool named 'fillForm' with no description provided. Based on context of MCP server management and sibling tools that include issue/sprint management operations, this tool likely fills out forms to create or modify configuration data.
Documented attack patterns abuse exactly the kind of access fillForm gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Server Generator, and nothing reaches the server without passing your rules. This is the rule we recommend for fillForm:
{
"version": "1",
"default": "deny",
"tools": {
"fillForm": {
"limits": [
{
"counter": "fillform_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}fillForm 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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fillForm. It is categorised as a Write tool in the MCP Server Generator MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the MCP Server Generator MCP server in PolicyLayer and add a rule for fillForm: 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 MCP Server Generator. Nothing to install.
fillForm 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 fillForm 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 fillForm. 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.
fillForm is provided by the MCP Server Generator MCP server (serhatuzbas/mcp-server-generator). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP Server Generator, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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79 MCP Server Generator tools catalogued and risk-classified — across an index of 43,000+ MCP servers.