submit_student_mark · Xiaoya Teacher MCP: Risk & Policy

WHAT IT DOES

What submit_student_mark does on Xiaoya Teacher

AI agents use submit_student_mark 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 submit_student_mark needs a policy

This tool creates or modifies student assessment data (marks/grades), which are critical educational records. While it doesn't delete data (not Destructive) or execute arbitrary code (not Execute), it does reversibly change persistent student information. The high severity reflects the blast radius of erroneous grade submissions affecting student records, academic standing, and transcripts. Confidence is moderate (0.

From the tool's definition Tool name 'submit_student_mark' indicates modification of student grades/marks, which are educational records. No description provided to clarify exact behavior.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

submit_student_mark Rate-limited

submit_student_mark 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": {
    "submit_student_mark": {
      "limits": [
        {
          "counter": "submit_student_mark_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

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 submit_student_mark

What does the submit_student_mark tool do? +

submit_student_mark. 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 submit_student_mark? +

Register the Xiaoya Teacher MCP server in PolicyLayer and add a rule for submit_student_mark: 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 submit_student_mark? +

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

Can I rate-limit submit_student_mark? +

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

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

submit_student_mark 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.