unity_shadergraph_add_node
Add a new node to a Shader Graph. Supports common types: Add, Multiply, Subtract, Divide, Lerp, Color, Float, Vector2, Vector3, Vector4, Time, UV, Position, Normal, SampleTexture2D, Fresnel, Saturate, OneMinus, Power, Split, Combine. Also supports any type by full class name.
This record as markdown: /tools/anklebreaker-studio-unity-mcp-server/unity-shadergraph-add-node.md
What unity_shadergraph_add_node does on Unity MCP Server
AI agents use unity_shadergraph_add_node to create or update resources in Unity MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Unity MCP Server environment.
Why unity_shadergraph_add_node is rated Medium
This tool creates or modifies shader graph nodes, which are reversible changes to game assets within a Unity project. It does not execute arbitrary code, delete data, or cause financial impact.
From the tool's definition Tool description states it 'Add[s] a new node to a Shader Graph', which is a create/modify operation. The supported node types (Add, Multiply, Subtract, etc.) and ability to add 'any type by full class name' indicate creation of shader graph assets.
Attacks that exploit this kind of access
The rule that runs unity_shadergraph_add_node safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Unity MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For unity_shadergraph_add_node, this is the rule to start with:
unity_shadergraph_add_node 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 Unity MCP Server, apply this rule, and every unity_shadergraph_add_node call is checked against it from then on.
Questions about unity_shadergraph_add_node
Add a new node to a Shader Graph. Supports common types: Add, Multiply, Subtract, Divide, Lerp, Color, Float, Vector2, Vector3, Vector4, Time, UV, Position, Normal, SampleTexture2D, Fresnel, Saturate, OneMinus, Power, Split, Combine. Also supports any type by full class name. It is categorised as a Write tool in the Unity MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Unity MCP Server MCP server in PolicyLayer and add a rule for unity_shadergraph_add_node: 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_shadergraph_add_node 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 unity_shadergraph_add_node 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_shadergraph_add_node. 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_shadergraph_add_node 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.
More on Unity MCP Server, and thousands of servers like it.
This server
Across the catalogue