grade_student_question · Xiaoya Teacher MCP: Risk & Policy

WHAT IT DOES

What grade_student_question does on Xiaoya Teacher

AI agents use grade_student_question to create or update resources in Xiaoya Teacher — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Xiaoya Teacher environment.

WHY IT NEEDS A POLICY

Why grade_student_question needs a policy

Grading student questions creates or updates assessment records that reflect student performance. While this is a normal educational operation, it modifies persistent data that affects student records and outcomes. This qualifies as Write (not Execute, as grading follows a defined workflow) with medium severity due to potential for misuse causing unfair grade assignments.

From the tool's definition Tool name 'grade_student_question' indicates modifying/recording student assessment data. Server description mentions '批阅' (grading/marking) as a core function. The tool performs irreversible modification of student grades/records.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

grade_student_question Rate-limited

grade_student_question 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "grade_student_question": {
      "limits": [
        {
          "counter": "grade_student_question_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Xiaoya Teacher, so you can run agents against it safely.

FAQ

Questions about grade_student_question

What does the grade_student_question tool do? +

grade_student_question. It is categorised as a Write tool in the Xiaoya Teacher MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on grade_student_question? +

Register the Xiaoya Teacher MCP server in PolicyLayer and add a rule for grade_student_question: 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 Xiaoya Teacher. Nothing to install.

What risk level is grade_student_question? +

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

Can I rate-limit grade_student_question? +

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

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

grade_student_question is provided by the Xiaoya Teacher MCP server (sav1our520/xiaoya-teacher-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.