Low Risk

get_board_visualization

Provides the current state of the chessboard as an image.

How to control get_board_visualization ↓

What get_board_visualization does on MCP Chess Server

AI agents call get_board_visualization to retrieve information from MCP Chess Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

Why get_board_visualization needs a policy

This tool retrieves and displays the current game state without modifying data, triggering external operations, or creating irreversible changes. It is a read-only query operation analogous to 'get' or 'fetch'. The low severity reflects that misuse would only expose game state information already known to the agent, with no destructive or operational consequences.

From the tool's definition Tool name 'get_board_visualization' and description 'Provides the current state of the chessboard as an image' indicate a retrieval operation with no side effects.

Documented attack patterns abuse exactly the kind of access get_board_visualization gives an agent:

How to control get_board_visualization

PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Chess Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_board_visualization:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_board_visualization": {}
  }
}

get_board_visualization is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  1. Create a free account and register MCP Chess Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about get_board_visualization

What does the get_board_visualization tool do? +

Provides the current state of the chessboard as an image. It is categorised as a Read tool in the MCP Chess Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_board_visualization? +

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

What risk level is get_board_visualization? +

get_board_visualization is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_board_visualization? +

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

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

get_board_visualization is provided by the MCP Chess Server MCP server (jiayao/mcp-chess). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MCP Chess Server tool call.

Start from MCP Chess Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

Free to start. No card required.

6 MCP Chess Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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