ims_checkpoint_session · IMS MCP Server MCP: Risk & Policy

WHAT IT DOES

What ims_checkpoint_session does on IMS MCP Server

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

WHY IT NEEDS A POLICY

Why ims_checkpoint_session needs a policy

Checkpointing a session most likely creates a snapshot or saves session state to storage—a write operation that modifies persistent data. While reversible (unlike destructive deletion), it commits changes to the memory system and could affect subsequent sessions if misused. Severity is medium because the blast radius depends on session context, but it's not financial or destructive.

From the tool's definition Tool name 'ims_checkpoint_session' implies saving or persisting session state. The IMS server description mentions 'session management' and 'memory storage,' and checkpointing is a standard operation for committing state changes.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ims_checkpoint_session Rate-limited

ims_checkpoint_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": {
    "ims_checkpoint_session": {
      "limits": [
        {
          "counter": "ims_checkpoint_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 IMS MCP Server, so you can run agents against it safely.

FAQ

Questions about ims_checkpoint_session

What does the ims_checkpoint_session tool do? +

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

How do I enforce a policy on ims_checkpoint_session? +

Register the IMS MCP Server MCP server in PolicyLayer and add a rule for ims_checkpoint_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 IMS MCP Server. Nothing to install.

What risk level is ims_checkpoint_session? +

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

Can I rate-limit ims_checkpoint_session? +

Yes. Add a rate_limit block to the ims_checkpoint_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 ims_checkpoint_session completely? +

Set action: deny in the PolicyLayer policy for ims_checkpoint_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 ims_checkpoint_session? +

ims_checkpoint_session is provided by the IMS MCP Server MCP server (jdelon02/ims-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.