Get the position of a specific object by name
AI agents call get_object_position to retrieve information from Threlte without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool queries and returns positional data from a Three.js/Threlte scene without modifying, deleting, or executing any operations. It is a straightforward read operation on scene data.
From the tool's definition Tool name is 'get_object_position' and description states 'Get the position of a specific object by name' — this is a pure retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access get_object_position gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Threlte, and nothing reaches the server without passing your rules. This is the rule we recommend for get_object_position:
{
"version": "1",
"default": "deny",
"tools": {
"get_object_position": {}
}
}get_object_position is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the position of a specific object by name. It is categorised as a Read tool in the Threlte MCP Server, which means it retrieves data without modifying state.
Register the Threlte MCP server in PolicyLayer and add a rule for get_object_position: 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 Threlte. Nothing to install.
get_object_position is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_object_position 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 get_object_position. 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.
get_object_position is provided by the Threlte MCP server (serifeusstudio/threlte-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Threlte, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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30 Threlte tools catalogued and risk-classified — across an index of 43,000+ MCP servers.