unity_build_avatar

Trigger VRC SDK avatar build (local test build, not publish).

SERVERBlender Copilot MCP Server SOURCEdwgx/blender-copilot

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/dwgx-blender-copilot/unity-build-avatar.md

WHAT IT DOES

What unity_build_avatar does on Blender Copilot MCP Server

AI agents invoke unity_build_avatar to trigger actions in Blender Copilot MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why unity_build_avatar is rated High

This tool invokes an external build system (VRC SDK) to compile and generate VRChat avatar assets. While scoped to 'local test build', it still executes a complex, externally-dependent operation that could consume resources, create files, or fail in unpredictable ways. Misuse could cause build failures, resource exhaustion, or generation of malformed avatars.

From the tool's definition Trigger VRC SDK avatar build (local test build, not publish). The verb 'trigger' and 'build' indicate this tool executes an external operation (VRC SDK build process) whose effects depend on arguments and system state.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs unity_build_avatar safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Blender Copilot MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For unity_build_avatar, this is the rule to start with:

unity_build_avatar Rate-limited

unity_build_avatar stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "unity_build_avatar": {
      "limits": [
        {
          "counter": "unity_build_avatar_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Blender Copilot MCP Server, apply this rule, and every unity_build_avatar call is checked against it from then on.

FAQ

Questions about unity_build_avatar

What does the unity_build_avatar tool do? +

Trigger VRC SDK avatar build (local test build, not publish). It is categorised as a Execute tool in the Blender Copilot MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on unity_build_avatar? +

Register the Blender Copilot MCP Server MCP server in PolicyLayer and add a rule for unity_build_avatar: 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 Blender Copilot MCP Server. Nothing to install.

What risk level is unity_build_avatar? +

unity_build_avatar is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit unity_build_avatar? +

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

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

unity_build_avatar is provided by the Blender Copilot MCP Server MCP server (dwgx/blender-copilot). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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