restore_context_snapshot

THE RISK

Medium Risk

Why restore_context_snapshot needs a policy

Restoring a context snapshot overwrites the current context with previously saved data. While reversible (another snapshot could be restored or the original context recreated), it modifies application state. It is not Destructive because snapshots typically exist for this purpose and the original can be recovered.

From the tool's definition Tool description states it 'Restores a context from a previously created snapshot,' which modifies the current state by replacing it with a saved state. This is a Write operation that reversibly changes data.

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

POLICY

How to control restore_context_snapshot

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "restore_context_snapshot": {
      "limits": [
        {
          "counter": "restore_context_snapshot_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

restore_context_snapshot 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.

Create a free account and register MockLoop 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.

LIMIT THIS TOOL →

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EXPLORE

Related tools and policies

More MockLoop MCP Server tools

Execute deploy_scenario Deploys scenario to MockLoop server. Execute execute_test_plan Combines scenario generation and deployment in one operation. Execute run_load_test Executes load testing with configurable parameters. Execute run_security_test Executes security testing scenarios for vulnerability assessment. Execute run_test_iteration Executes a single test iteration with monitoring. Execute generate_mock_api Generates a FastAPI mock server from an API specification (e.g., OpenAPI). Execute schedule_test_suite Schedules automated test suite execution. Execute switch_scenario Switches active scenario on a server.

All 30 MockLoop MCP Server tools →

Write tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about restore_context_snapshot

What does the restore_context_snapshot tool do? +

Restores a context from a previously created snapshot. It is categorised as a Write tool in the MockLoop 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 restore_context_snapshot? +

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

What risk level is restore_context_snapshot? +

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

Can I rate-limit restore_context_snapshot? +

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

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

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

Enforce policy on every MockLoop MCP Server tool call.

Start from MockLoop 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 →