Get a visual preview thumbnail of any Unity asset (prefab, material, texture, mesh, etc.) as an inline image. Returns base64 PNG image that Claude can see directly.
AI agents call unity_graphics_asset_preview to retrieve information from Unity MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves visual data (thumbnail preview) of existing Unity assets without creating, modifying, executing code, deleting, or performing financial operations. It is a straightforward query operation that generates a visual representation of an asset. The thumbnail generation is a side-effect of reading, not a state change to the asset itself.
From the tool's definition Tool name 'unity_graphics_asset_preview' and description explicitly state it 'Get[s] a visual preview thumbnail' and 'Returns base64 PNG image'.
Documented attack patterns abuse exactly the kind of access unity_graphics_asset_preview gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Unity MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for unity_graphics_asset_preview:
{
"version": "1",
"default": "deny",
"tools": {
"unity_graphics_asset_preview": {}
}
}unity_graphics_asset_preview is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Get a visual preview thumbnail of any Unity asset (prefab, material, texture, mesh, etc.) as an inline image. Returns base64 PNG image that Claude can see directly. It is categorised as a Read tool in the Unity MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Unity MCP Server MCP server in PolicyLayer and add a rule for unity_graphics_asset_preview: 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 Unity MCP Server. Nothing to install.
unity_graphics_asset_preview 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 unity_graphics_asset_preview 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 unity_graphics_asset_preview. 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.
unity_graphics_asset_preview is provided by the Unity MCP Server MCP server (anklebreaker-studio/unity-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 324 Unity MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
324 Unity MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.