update_true_false_answer · Xiaoya Teacher MCP: Risk & Policy

WHAT IT DOES

What update_true_false_answer does on Xiaoya Teacher

AI agents use update_true_false_answer 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 update_true_false_answer needs a policy

This tool creates or modifies answer data in a teaching/grading system. While reversible (answers can typically be corrected), it affects educational records and assessments. The empty description lowers confidence slightly, but the name and server context are sufficient to classify as Write.

From the tool's definition Tool name 'update_true_false_answer' indicates modification of answer data. The server context shows it's part of an educational management platform with grading and assessment features.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_true_false_answer Rate-limited

update_true_false_answer 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": {
    "update_true_false_answer": {
      "limits": [
        {
          "counter": "update_true_false_answer_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 update_true_false_answer

What does the update_true_false_answer tool do? +

update_true_false_answer. 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 update_true_false_answer? +

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

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

Can I rate-limit update_true_false_answer? +

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

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

update_true_false_answer 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.