AI agents call measure_distance to retrieve information from Uefn without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Measuring distance is a read-only operation that queries geometric or spatial data in the UEFN editor without creating, modifying, or deleting assets. It has minimal blast radius as an AI agent cannot cause harm by requesting distance measurements. Confidence is moderate (0.7) due to missing description; if the tool had side effects not apparent from the name, that would change the classification.
From the tool's definition Tool name 'measure_distance' suggests a query operation that retrieves or computes distance information without modifying state. No description provided, but the name implies data retrieval.
Documented attack patterns abuse exactly the kind of access measure_distance gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Uefn, and nothing reaches the server without passing your rules. This is the rule we recommend for measure_distance:
{
"version": "1",
"default": "deny",
"tools": {
"measure_distance": {}
}
}measure_distance is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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measure_distance. It is categorised as a Read tool in the Uefn MCP Server, which means it retrieves data without modifying state.
Register the Uefn MCP server in PolicyLayer and add a rule for measure_distance: 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 Uefn. Nothing to install.
measure_distance is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the measure_distance 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 measure_distance. 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.
measure_distance is provided by the Uefn MCP server (quangdang46/uefn-verse-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Uefn, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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143 Uefn tools catalogued and risk-classified — across an index of 43,000+ MCP servers.