create_script
Create a new C# component script in the project. Generates proper s&box component boilerplate with the specified class name, namespace, and optional properties
This record as markdown: /tools/sbox/create-script.md
What create_script does on Sbox
AI agents use create_script to create or update resources in Sbox, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Sbox environment.
Why create_script is rated Medium
This tool creates a new file (C# script) in the project. It's a write operation that generates code files on disk. While it could potentially be misused to write malicious code, the action itself is a reversible file creation (the file can be deleted), placing it in Write rather than Execute or Destructive.
From the tool's definition Create a new C# component script in the project. Generates proper s&box component boilerplate
Attacks that exploit this kind of access
The rule that runs create_script 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 create_script, this is the rule to start with:
create_script 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Sbox, apply this rule, and every create_script call is checked against it from then on.
Questions about create_script
Create a new C# component script in the project. Generates proper s&box component boilerplate with the specified class name, namespace, and optional properties. It is categorised as a Write tool in the Sbox MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Sbox MCP server in PolicyLayer and add a rule for create_script: 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.
create_script is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_script 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 create_script. 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.
create_script 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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