AI agents use ultimate_create_d71 to create or update resources in Commodore 64 Ultimate MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Commodore 64 Ultimate MCP Server environment.
This tool creates a new D71 disk image (a Commodore 64 disk format), which is a write operation that modifies the file system by adding a new file. D71 is a standard disk image format for Commodore systems. The action is reversible—the created disk image can be deleted.
From the tool's definition Tool name 'ultimate_create_d71' and description 'Create a D71 disk image' explicitly indicate creation of a new disk image file, a reversible write operation.
Documented attack patterns abuse exactly the kind of access ultimate_create_d71 gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Commodore 64 Ultimate MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for ultimate_create_d71:
{
"version": "1",
"default": "deny",
"tools": {
"ultimate_create_d71": {
"limits": [
{
"counter": "ultimate_create_d71_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}ultimate_create_d71 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.
Free to start. No card required.
Create a D71 disk image. It is categorised as a Write tool in the Commodore 64 Ultimate MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Commodore 64 Ultimate MCP Server MCP server in PolicyLayer and add a rule for ultimate_create_d71: 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 Commodore 64 Ultimate MCP Server. Nothing to install.
ultimate_create_d71 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 ultimate_create_d71 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 ultimate_create_d71. 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.
ultimate_create_d71 is provided by the Commodore 64 Ultimate MCP Server MCP server (martijn-devrev/ultimate64mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Commodore 64 Ultimate MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
39 Commodore 64 Ultimate MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.