render_solution · Crossword MCP Server MCP: Risk & Policy

WHAT IT DOES

What render_solution does on Crossword MCP Server

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

WHY IT NEEDS A POLICY

Why render_solution needs a policy

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

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

render_solution Rate-limited

render_solution 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": {
    "render_solution": {
      "limits": [
        {
          "counter": "render_solution_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 Crossword MCP Server, so you can run agents against it safely.

FAQ

Questions about render_solution

What does the render_solution tool do? +

render_solution. It is categorised as a Write tool in the Crossword 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 render_solution? +

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

What risk level is render_solution? +

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

Can I rate-limit render_solution? +

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

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

render_solution is provided by the Crossword MCP Server MCP server (watamoo/mcp-crossword-tools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.