cloud_sandbox_read_file

Read a file from 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-read-file.md

WHAT IT DOES

What cloud_sandbox_read_file does on CoWork OS

AI agents call cloud_sandbox_read_file 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_read_file is rated Low

This tool retrieves file contents from a cloud sandbox environment. It performs a read-only operation with no side effects, no data modification, and no execution of code. The blast radius is minimal: worst case, an AI agent reads unintended file contents, but cannot alter, delete, or execute anything. Classified as Read with low severity.

From the tool's definition Tool name contains 'read_file' and description states 'Read a file from a cloud sandbox' — indicates data retrieval without modification.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs cloud_sandbox_read_file 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_read_file, this is the rule to start with:

cloud_sandbox_read_file Allowed

cloud_sandbox_read_file 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_read_file": {}
  }
}

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_read_file call is checked against it from then on.

FAQ

Questions about cloud_sandbox_read_file

What does the cloud_sandbox_read_file tool do? +

Read a file from 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_read_file? +

Register the CoWork OS MCP server in PolicyLayer and add a rule for cloud_sandbox_read_file: 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_read_file? +

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

Can I rate-limit cloud_sandbox_read_file? +

Yes. Add a rate_limit block to the cloud_sandbox_read_file 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_read_file completely? +

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

cloud_sandbox_read_file 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.

KEEP EXPLORING

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