Medium Risk

knowledge_learn

学习易经和八字知识

How to control knowledge_learn ↓

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

Medium Risk

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

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

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

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "knowledge_learn": {
      "limits": [
        {
          "counter": "knowledge_learn_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

knowledge_learn 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.

  1. Create a free account and register Yijing Bazi MCP 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.
LIMIT THIS TOOL →

Free to start. No card required.

Go deeper

What does the knowledge_learn tool do? +

学习易经和八字知识. It is categorised as a Write tool in the Yijing Bazi 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 knowledge_learn? +

Register the Yijing Bazi MCP Server MCP server in PolicyLayer and add a rule for knowledge_learn: 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 Yijing Bazi MCP Server. Nothing to install.

What risk level is knowledge_learn? +

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

Can I rate-limit knowledge_learn? +

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

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

knowledge_learn is provided by the Yijing Bazi MCP Server MCP server (siwuxue/yijing-bazi-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Yijing Bazi MCP Server tool call.

Deterministic rules across all 10 Yijing Bazi MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

Free to start. No card required.

10 Yijing Bazi MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

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