convert_4326_to_3857 · OneMap MCP Server MCP: Risk & Policy

WHAT IT DOES

What convert_4326_to_3857 does on OneMap MCP Server

AI agents use convert_4326_to_3857 to create or update resources in OneMap MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your OneMap MCP Server environment.

WHY IT NEEDS A POLICY

Why convert_4326_to_3857 needs a policy

An AI agent can call convert_4326_to_3857 faster than any human can review — one bad instruction and it creates or modifies resources in OneMap MCP Server by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

convert_4326_to_3857 Rate-limited

convert_4326_to_3857 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": {
    "convert_4326_to_3857": {
      "limits": [
        {
          "counter": "convert_4326_to_3857_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 OneMap MCP Server, so you can run agents against it safely.

FAQ

Questions about convert_4326_to_3857

What does the convert_4326_to_3857 tool do? +

convert_4326_to_3857. It is categorised as a Write tool in the OneMap MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on convert_4326_to_3857? +

Register the OneMap MCP Server MCP server in PolicyLayer and add a rule for convert_4326_to_3857: 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 OneMap MCP Server. Nothing to install.

What risk level is convert_4326_to_3857? +

convert_4326_to_3857 is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit convert_4326_to_3857? +

Yes. Add a rate_limit block to the convert_4326_to_3857 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 convert_4326_to_3857 completely? +

Set action: deny in the PolicyLayer policy for convert_4326_to_3857. 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 convert_4326_to_3857? +

convert_4326_to_3857 is provided by the OneMap MCP Server MCP server (linzele/mcp-onemap). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.