This record as markdown: /tools/sbox/restore-checkpoint.md
What restore_checkpoint does on Sbox
AI agents call restore_checkpoint to permanently remove resources in Sbox, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why restore_checkpoint is rated Critical
Irreversibly replaces the current scene, overwriting existing work with a checkpoint.
From the tool's definition REPLACE the open scene
Attacks that exploit this kind of access
The rule that runs restore_checkpoint safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Sbox, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For restore_checkpoint, this is the rule to start with:
restore_checkpoint is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Sbox, apply this rule, and every restore_checkpoint call is checked against it from then on.
Questions about restore_checkpoint
REPLACE the open scene. It is categorised as a Destructive tool in the Sbox MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Sbox MCP server in PolicyLayer and add a rule for restore_checkpoint: 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 Sbox. Nothing to install.
restore_checkpoint is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the restore_checkpoint 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.
Set action: deny in the PolicyLayer policy for restore_checkpoint. 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.
restore_checkpoint is provided by the Sbox MCP server (sbox-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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