AI agents call get_puzzle to retrieve information from Haiguitang MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves puzzle content for a game (Turtle Soup puzzle game). It only queries and returns data without modifying, deleting, or executing anything. No side effects or irreversible actions are performed. Classification as Read is appropriate with high confidence.
From the tool's definition Tool name 'get_puzzle' with description '获取一个谜题的完整内容' (retrieve/fetch complete puzzle content). The verb '获取' means 'to get/retrieve' in Chinese, indicating a read operation.
Documented attack patterns abuse exactly the kind of access get_puzzle gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Haiguitang MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_puzzle:
{
"version": "1",
"default": "deny",
"tools": {
"get_puzzle": {}
}
}get_puzzle is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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获取一个谜题的完整内容. It is categorised as a Read tool in the Haiguitang MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Haiguitang MCP Server MCP server in PolicyLayer and add a rule for get_puzzle: 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 Haiguitang MCP Server. Nothing to install.
get_puzzle is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_puzzle 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.
Set action: deny in the PolicyLayer policy for get_puzzle. 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.
get_puzzle is provided by the Haiguitang MCP Server MCP server (wangyafu/haiguitangmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Haiguitang MCP 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.
3 Haiguitang MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.