cloud_sandbox_url

Get the public URL for an exposed port on a cloud sandbox.

SERVERCoWork OS SOURCECoWork-OS/CoWork-OS

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/cowork-os/cloud-sandbox-url.md

WHAT IT DOES

What cloud_sandbox_url does on CoWork OS

AI agents call cloud_sandbox_url to retrieve information from CoWork OS without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why cloud_sandbox_url is rated Low

This tool retrieves information about an exposed port's public URL. It is a read-only query operation with no side effects. While exposing URLs could theoretically enable access to services, the tool itself only fetches and returns existing data.

From the tool's definition Tool description states 'Get the public URL for a cloud sandbox' — a retrieval operation that queries existing configuration and returns a URL without modifying, executing, or deleting anything.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs cloud_sandbox_url safely

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

cloud_sandbox_url Allowed

cloud_sandbox_url is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about cloud_sandbox_url

What does the cloud_sandbox_url tool do? +

Get the public URL for an exposed port on a cloud sandbox. It is categorised as a Read tool in the CoWork OS MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on cloud_sandbox_url? +

Register the CoWork OS MCP server in PolicyLayer and add a rule for cloud_sandbox_url: 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 CoWork OS. Nothing to install.

What risk level is cloud_sandbox_url? +

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

Can I rate-limit cloud_sandbox_url? +

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

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

cloud_sandbox_url is provided by the CoWork OS MCP server (CoWork-OS/CoWork-OS). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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