Get all nodes in a Shader Graph file. Returns node IDs, types, positions, and basic property data by parsing the .shadergraph JSON. Essential for understanding graph structure before editing.
AI agents call unity_shadergraph_get_nodes 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 and queries data from an existing Shader Graph file without creating, modifying, deleting, or executing operations. It parses JSON metadata to return information about the graph's current state. This is a pure read operation with no side effects, making it low severity. The blast radius of misuse is minimal since the tool only exposes existing metadata about shader graphs.
From the tool's definition The tool 'Get all nodes in a Shader Graph file' returns node IDs, types, positions, and basic property data by parsing the .shadergraph JSON.
Documented attack patterns abuse exactly the kind of access unity_shadergraph_get_nodes 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_shadergraph_get_nodes:
{
"version": "1",
"default": "deny",
"tools": {
"unity_shadergraph_get_nodes": {}
}
}unity_shadergraph_get_nodes is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get all nodes in a Shader Graph file. Returns node IDs, types, positions, and basic property data by parsing the .shadergraph JSON. Essential for understanding graph structure before editing. 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_shadergraph_get_nodes: 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_get_nodes 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_shadergraph_get_nodes 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_get_nodes. 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_get_nodes 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.
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324 Unity MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.