add_envmap_probe
Add an environment reflection/ambient probe (EnvmapProbe) at a position with a cubic influence volume — captures local reflections and indirect light for nearby surfaces.
This record as markdown: /tools/sbox/add-envmap-probe.md
What add_envmap_probe does on Sbox
AI agents use add_envmap_probe 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 add_envmap_probe is rated Medium
This tool creates a new game object (EnvmapProbe) that modifies the rendering environment in a reversible way. It falls under Write category as it adds/creates data structures in the game world. Severity is medium because misuse could clutter the scene or degrade rendering performance, but the effect is reversible (the probe can be removed). It poses no destructive, financial, or arbitrary code execution risks.
From the tool's definition Tool name 'add_envmap_probe' and description 'Add an environment reflection/ambient probe' indicates creation of a new object in the game scene with properties like position and cubic influence volume.
Attacks that exploit this kind of access
The rule that runs add_envmap_probe 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 add_envmap_probe, this is the rule to start with:
add_envmap_probe 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 add_envmap_probe call is checked against it from then on.
Questions about add_envmap_probe
Add an environment reflection/ambient probe (EnvmapProbe) at a position with a cubic influence volume — captures local reflections and indirect light for nearby surfaces. 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 add_envmap_probe: 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.
add_envmap_probe 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 add_envmap_probe 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 add_envmap_probe. 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.
add_envmap_probe 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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