new_request_session · Req MCP: Risk & Policy

WHAT IT DOES

What new_request_session does on Req

AI agents invoke new_request_session to trigger actions in Req. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why new_request_session needs a policy

new_request_session triggers real processes with real consequences. An agent gone sideways doesn't fire it once — it starts dozens of builds, sends mass notifications, or burns through compute before anyone looks up.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

new_request_session Rate-limited

new_request_session stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "new_request_session": {
      "limits": [
        {
          "counter": "new_request_session_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Req, so you can run agents against it safely.

FAQ

Questions about new_request_session

What does the new_request_session tool do? +

A refresher function to clear existing session. Clearing cookies and authStore. It is categorised as a Execute tool in the Req MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on new_request_session? +

Register the Req MCP server in PolicyLayer and add a rule for new_request_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 Req. Nothing to install.

What risk level is new_request_session? +

new_request_session is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit new_request_session? +

Yes. Add a rate_limit block to the new_request_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 new_request_session completely? +

Set action: deny in the PolicyLayer policy for new_request_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 new_request_session? +

new_request_session is provided by the Req MCP server (tarminarx/request-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.