create_sandbox

Create a disposable Docker sandbox for AI agents. Returns sandbox_id.

SERVERAgent Jail SOURCEidiscoord13-sketch/agent-jail-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/agent-jail-mcp/create-sandbox.md

WHAT IT DOES

What create_sandbox does on Agent Jail

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

RISK

Why create_sandbox is rated Medium

An AI agent can call create_sandbox faster than any human can review: one bad instruction and it creates or modifies resources in Agent Jail by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_sandbox safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Agent Jail, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create_sandbox, this is the rule to start with:

create_sandbox Rate-limited

create_sandbox 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": {
    "create_sandbox": {
      "limits": [
        {
          "counter": "create_sandbox_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Agent Jail, apply this rule, and every create_sandbox call is checked against it from then on.

FAQ

Questions about create_sandbox

What does the create_sandbox tool do? +

Create a disposable Docker sandbox for AI agents. Returns sandbox_id. It is categorised as a Write tool in the Agent Jail MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_sandbox? +

Register the Agent Jail MCP server in PolicyLayer and add a rule for create_sandbox: 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 Agent Jail. Nothing to install.

What risk level is create_sandbox? +

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

Can I rate-limit create_sandbox? +

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

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

create_sandbox is provided by the Agent Jail MCP server (idiscoord13-sketch/agent-jail-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Agent Jail, and thousands of servers like it.

This server

All 35 Agent Jail tools →

Across the catalogue

create_task on 0rca Dojo MCP Server →create-task on Kanban MCP Server →create_package_backup on Android Forensics ADB MCP Server →create_project on Stitch MCP Server → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →