extend_current_session · Rize MCP: Risk & Policy

WHAT IT DOES

What extend_current_session does on Rize

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

WHY IT NEEDS A POLICY

Why extend_current_session needs a policy

This tool modifies an existing session by extending its duration. It is a reversible modification (the session could be shortened again), so it falls under Write rather than Destructive. Misuse could corrupt time tracking data but has no financial or irreversible consequences.

From the tool's definition Extend the current session by specified minutes

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

extend_current_session Rate-limited

extend_current_session 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": {
    "extend_current_session": {
      "limits": [
        {
          "counter": "extend_current_session_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 Rize, so you can run agents against it safely.

FAQ

Questions about extend_current_session

What does the extend_current_session tool do? +

Extend the current session by specified minutes. It is categorised as a Write tool in the Rize MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on extend_current_session? +

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

What risk level is extend_current_session? +

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

Can I rate-limit extend_current_session? +

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

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

extend_current_session is provided by the Rize MCP server (rize-io/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.