unendorse_comment · Edstem MCP: Risk & Policy

WHAT IT DOES

What unendorse_comment does on Edstem

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

WHY IT NEEDS A POLICY

Why unendorse_comment needs a policy

The tool modifies comment state by removing an endorsement, which is a Write operation—it changes data but is fully reversible (the endorsement can be re-applied). It does not delete data (Destructive), execute arbitrary code (Execute), involve financial transactions (Financial), or merely read data (Read).

From the tool's definition Tool name 'unendorse_comment' and description 'Remove endorsement from a comment' indicate modification of comment metadata/state. This is a reversible change to existing data (the endorsement status of a comment).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

unendorse_comment Rate-limited

unendorse_comment 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": {
    "unendorse_comment": {
      "limits": [
        {
          "counter": "unendorse_comment_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 Edstem, so you can run agents against it safely.

FAQ

Questions about unendorse_comment

What does the unendorse_comment tool do? +

Remove endorsement from a comment. It is categorised as a Write tool in the Edstem MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on unendorse_comment? +

Register the Edstem MCP server in PolicyLayer and add a rule for unendorse_comment: 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 Edstem. Nothing to install.

What risk level is unendorse_comment? +

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

Can I rate-limit unendorse_comment? +

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

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

unendorse_comment is provided by the Edstem MCP server (rob-9/edstem-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.