AI agents call get_persona_prompt to retrieve information from Guru Pk without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves data about an expert persona's prompt configuration. It performs a query/get operation without creating, modifying, deleting, or executing any external operations. The low severity reflects minimal blast radius—retrieving prompt templates poses no risk of data destruction, financial impact, or unintended system modification.
From the tool's definition Tool name 'get_persona_prompt' and description '获取当前专家的角色提示' (retrieve current expert's role prompt) indicate a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access get_persona_prompt 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 get_persona_prompt:
{
"version": "1",
"default": "deny",
"tools": {
"get_persona_prompt": {}
}
}get_persona_prompt is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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获取当前专家的角色提示. It is categorised as a Read tool in the Guru Pk MCP Server, which means it retrieves data without modifying state.
Register the Guru Pk MCP server in PolicyLayer and add a rule for get_persona_prompt: 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.
get_persona_prompt 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_persona_prompt 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_persona_prompt. 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_persona_prompt 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.
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22 Guru Pk tools catalogued and risk-classified — across an index of 43,000+ MCP servers.