mark_mece · Tiling Trees MCP Server MCP: Risk & Policy

WHAT IT DOES

What mark_mece does on Tiling Trees MCP Server

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

WHY IT NEEDS A POLICY

Why mark_mece needs a policy

This tool creates or modifies data in a reversible manner (marking a tile with a validation status can be unmarked or changed). It does not retrieve data (Read), execute arbitrary code (Execute), permanently delete data (Destructive), or involve financial transactions (Financial).

From the tool's definition The tool 'mark_mece' performs a state update operation: it marks a split tile with a validation status for MECE properties.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mark_mece Rate-limited

mark_mece 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": {
    "mark_mece": {
      "limits": [
        {
          "counter": "mark_mece_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 Tiling Trees MCP Server, so you can run agents against it safely.

FAQ

Questions about mark_mece

What does the mark_mece tool do? +

Mark a split as validated for MECE (Mutually Exclusive, Collectively Exhaustive) properties. The tile must have children. It is categorised as a Write tool in the Tiling Trees 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 mark_mece? +

Register the Tiling Trees MCP Server MCP server in PolicyLayer and add a rule for mark_mece: 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 Tiling Trees MCP Server. Nothing to install.

What risk level is mark_mece? +

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

Can I rate-limit mark_mece? +

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

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

mark_mece is provided by the Tiling Trees MCP Server MCP server (k-chrispens/tiling-trees-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.