session_archive · Managed Agent Control MCP: Risk & Policy

WHAT IT DOES

What session_archive does on Managed Agent Control

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

WHY IT NEEDS A POLICY

Why session_archive needs a policy

Archiving a session is a Write operation because it modifies the session's state (transitioning it to an archived state) while preserving the underlying data and allowing potential restoration. It is not Destructive because data is retained and the action appears reversible.

From the tool's definition The tool description states it will 'stop accepting new events but keep its history' and is marked as 'Reversible-ish', indicating it modifies session state by archiving it.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

session_archive Rate-limited

session_archive 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": {
    "session_archive": {
      "limits": [
        {
          "counter": "session_archive_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 Managed Agent Control, so you can run agents against it safely.

FAQ

Questions about session_archive

What does the session_archive tool do? +

Archive a session: stop accepting new events but keep its history. Reversible-ish. It is categorised as a Write tool in the Managed Agent Control MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on session_archive? +

Register the Managed Agent Control MCP server in PolicyLayer and add a rule for session_archive: 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 Managed Agent Control. Nothing to install.

What risk level is session_archive? +

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

Can I rate-limit session_archive? +

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

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

session_archive is provided by the Managed Agent Control MCP server (modus-agendi/managed-agent-control-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

// THE FULL RECORD

session_archive is one line of Managed Agent Control's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

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