goclaw_session_preview

THE RISK

Low Risk

Why goclaw_session_preview needs a policy

This tool retrieves and displays historical chat session data without creating, modifying, or deleting any information. It is a read-only operation that queries existing session state. While it accesses session data that could be sensitive in some contexts, the tool itself performs no destructive or dangerous actions.

From the tool's definition Tool name and description indicate it 'Preview recent messages' - a retrieval operation with no modifications or side effects.

Documented attack patterns abuse exactly the kind of access goclaw_session_preview gives an agent:

POLICY

How to control goclaw_session_preview

PolicyLayer is an MCP gateway — it sits between your AI agents and GoClaw MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for goclaw_session_preview:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "goclaw_session_preview": {}
  }
}

goclaw_session_preview is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register GoClaw MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about goclaw_session_preview

What does the goclaw_session_preview tool do? +

Preview recent messages in a chat session. It is categorised as a Read tool in the GoClaw MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on goclaw_session_preview? +

Register the GoClaw MCP Server MCP server in PolicyLayer and add a rule for goclaw_session_preview: 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 GoClaw MCP Server. Nothing to install.

What risk level is goclaw_session_preview? +

goclaw_session_preview is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit goclaw_session_preview? +

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

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

goclaw_session_preview is provided by the GoClaw MCP Server MCP server (nextlevelbuilder/goclaw-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every GoClaw MCP Server tool call.

Start from GoClaw MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →