This record as markdown: /tools/sbox/set-component-reference.md
What set_component_reference does on Sbox
AI agents use set_component_reference 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 set_component_reference is rated Medium
This tool modifies game engine state by establishing component references/connections, which is a Write operation—it creates or modifies data reversibly. It does not execute arbitrary code (Execute), delete anything (Destructive), or move money (Financial).
From the tool's definition The tool name 'set_component_reference' and description 'Wire a component' indicate modifying component connections/references in the s&box game engine. This creates or updates data structures within the game scene (component wiring), which is reversible.
Attacks that exploit this kind of access
The rule that runs set_component_reference 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 set_component_reference, this is the rule to start with:
set_component_reference 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 set_component_reference call is checked against it from then on.
Questions about set_component_reference
Wire a component. 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 set_component_reference: 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.
set_component_reference 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 set_component_reference 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 set_component_reference. 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.
set_component_reference 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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