log_response · Lingua MCP: Risk & Policy

WHAT IT DOES

What log_response does on LinguaMCP

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

WHY IT NEEDS A POLICY

Why log_response needs a policy

This tool writes data by logging a user's practice response and modifying lesson status. It creates or updates records in the system, which is reversible. The description is truncated, slightly lowering confidence, but the core action (logging a response, setting a status) is clearly a Write operation with low blast radius as it only affects learning progress records.

From the tool's definition 'Log a practice response for a lesson. Automatically sets status to' — the tool records/writes a practice response and updates lesson status

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

log_response Rate-limited

log_response 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": {
    "log_response": {
      "limits": [
        {
          "counter": "log_response_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 LinguaMCP, so you can run agents against it safely.

FAQ

Questions about log_response

What does the log_response tool do? +

Log a practice response for a lesson. Automatically sets status to. It is categorised as a Write tool in the LinguaMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on log_response? +

Register the Lingua MCP server in PolicyLayer and add a rule for log_response: 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 LinguaMCP. Nothing to install.

What risk level is log_response? +

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

Can I rate-limit log_response? +

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

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

log_response is provided by the Lingua MCP server (marsmanleo/linguamcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.