generate_voronoi · PostGIS Yukon MCP: Risk & Policy

WHAT IT DOES

What generate_voronoi does on PostGIS Yukon MCP

AI agents use generate_voronoi to create or update resources in PostGIS Yukon MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your PostGIS Yukon MCP environment.

WHY IT NEEDS A POLICY

Why generate_voronoi needs a policy

An AI agent can call generate_voronoi faster than any human can review — one bad instruction and it creates or modifies resources in PostGIS Yukon MCP by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_voronoi Rate-limited

generate_voronoi 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "generate_voronoi": {
      "limits": [
        {
          "counter": "generate_voronoi_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches PostGIS Yukon MCP, so you can run agents against it safely.

FAQ

Questions about generate_voronoi

What does the generate_voronoi tool do? +

生成 Voronoi 多边形. It is categorised as a Write tool in the PostGIS Yukon MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on generate_voronoi? +

Register the PostGIS Yukon MCP server in PolicyLayer and add a rule for generate_voronoi: 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 PostGIS Yukon MCP. Nothing to install.

What risk level is generate_voronoi? +

generate_voronoi is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit generate_voronoi? +

Yes. Add a rate_limit block to the generate_voronoi 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.

How do I block generate_voronoi completely? +

Set action: deny in the PolicyLayer policy for generate_voronoi. 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.

What MCP server provides generate_voronoi? +

generate_voronoi is provided by the PostGIS Yukon MCP server (zmgiser/postgis_yukon_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.