list_libraries

List the s&box libraries/addons installed in this project (reads Libraries/ + each .sbproj). Discovers what

SERVERSbox SOURCEsbox-mcp-server

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/sbox/list-libraries.md

WHAT IT DOES

What list_libraries does on Sbox

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

RISK

Why list_libraries is rated Low

This tool only queries and enumerates installed libraries/addons by reading the project's library directories and project files. It has no side effects, creates no data, executes no code, and does not modify anything. It is a straightforward informational read operation, posing minimal security risk in the context of game development.

From the tool's definition Tool explicitly states it "reads Libraries/ + each .sbproj" and "Discovers what" libraries are installed. The verb "List" and the action of reading configuration files without modification indicates a retrieval operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

list_libraries Allowed

list_libraries 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": {
    "list_libraries": {}
  }
}

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

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

FAQ

Questions about list_libraries

What does the list_libraries tool do? +

List the s&box libraries/addons installed in this project (reads Libraries/ + each .sbproj). Discovers what. It is categorised as a Read tool in the Sbox MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_libraries? +

Register the Sbox MCP server in PolicyLayer and add a rule for list_libraries: 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.

What risk level is list_libraries? +

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

Can I rate-limit list_libraries? +

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

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

list_libraries 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.

KEEP EXPLORING

More on Sbox, and thousands of servers like it.

This server

All 207 Sbox tools →

Across the catalogue

aiva_list_affiliates on AIVA MCP Server →list_agents on 0rca Dojo MCP Server → The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →