AI agents use set_language to create or update resources in Guru Pk — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Guru Pk environment.
This tool creates or modifies a language preference setting for the debate system. It is a Write action because it changes stored configuration state reversibly. Severity is low because misconfiguration of language settings has minimal blast radius—it does not execute arbitrary operations, delete data, or affect financial transactions.
From the tool's definition Tool name 'set_language' and description '设置专家回复使用的语言' (set the language used in expert replies) indicates modifying a configuration/preference setting.
Documented attack patterns abuse exactly the kind of access set_language gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Guru Pk, and nothing reaches the server without passing your rules. This is the rule we recommend for set_language:
{
"version": "1",
"default": "deny",
"tools": {
"set_language": {
"limits": [
{
"counter": "set_language_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}set_language 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.
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设置专家回复使用的语言. It is categorised as a Write tool in the Guru Pk MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Guru Pk MCP server in PolicyLayer and add a rule for set_language: 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 Guru Pk. Nothing to install.
set_language is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the set_language 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 set_language. 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.
set_language is provided by the Guru Pk MCP server (mitsudoai/guru-pk-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Guru Pk, 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.
22 Guru Pk tools catalogued and risk-classified — across an index of 43,000+ MCP servers.