Skip to main content
Glama
kumoproductions

mcp-cinema4d

by kumoproductions
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Local

Apply Node Graph Description

apply_graph_description

Create and edit node graphs via declarative dict syntax—add nodes, connect ports, set values, assign IDs—for materials or scene-nodes documents.

Instructions

Build or mutate a node graph using maxon.GraphDescription's declarative dict syntax. Supports creating nodes ($type), assigning stable ids ($id), wiring connections via 'thisPort -> childPort' keys (the value is the nested upstream node), and setting port values inline. Example: {"$type":"Output","Surface -> outColor":{"$type":"Standard Material","$id":"mat","Base/Color":[1,0,0]}}. Works for material graphs (standard/redshift) and the scene-nodes (neutron) document graph via scope:"document". For scene-nodes, $type must be a node-template asset id from list_graph_node_assets (node_space:"scenenodes"), e.g. "net.maxon.node.invert" — NOT the net.maxon.corenode:* ids; the scene-nodes path supports creation + connections + port values (graph queries/labels are material-only). Creates the graph on demand by default.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
scopeNoTarget the active document's scene-nodes graph instead of a material.
handleNoMaterial handle. Required unless `scope:'document'`.
node_spaceNoAlias 'standard' | 'redshift' | 'scenenodes' or a maxon.Id. Default 'standard' for materials, 'scenenodes' for document scope.
descriptionYesmaxon.GraphDescription dict (nested; $type / $id / '->' keys).
create_graphNoCreate the graph if missing. Default true.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed3 schema fields changedv0.5.1
    • removedInput schema / definitions
      Removed value: -{
-  "__schema0": {
-    "anyOf": [
-      {
-        "properties": {
-          "kind": {
-            "const": "object",
-            "type": "string"
-          },
-          "name": {
-            "type": "string"
-          },
-          "path": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "kind"
-        ],
-        "type": "object"
-      },
-      {
-        "properties": {
-          "kind": {
-            "const": "render_data",
-            "type": "string"
-          },
-          "name": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "kind",
-          "name"
-        ],
-        "type": "object"
-      },
-      {
-        "properties": {
-          "kind": {
-            "const": "take",
-            "type": "string"
-          },
-          "name": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "kind",
-          "name"
-        ],
-        "type": "object"
-      },
-      {
-        "properties": {
-          "kind": {
-            "const": "material",
-            "type": "string"
-          },
-          "name": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "kind",
-          "name"
-        ],
-        "type": "object"
-      },
-      {
-        "properties": {
-          "kind": {
-            "const": "layer",
-            "type": "string"
-          },
-          "name": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "kind",
-          "name"
-        ],
-        "type": "object"
-      },
-      {
-        "properties": {
-          "kind": {
-            "const": "tag",
-            "type": "string"
-          },
-          "object": {
-            "type": "string"
-          },
-          "object_path": {
-            "type": "string"
-          },
-          "tag_name": {
-            "type": "string"
-          },
-          "type_id": {
-            "maximum": 9007199254740991,
-            "minimum": -9007199254740991,
-            "type": "integer"
-          }
-        },
-        "required": [
-          "kind"
-        ],
-        "type": "object"
-      },
-      {
-        "properties": {
-          "kind": {
-            "const": "video_post",
-            "type": "string"
-          },
-          "render_data": {
-            "type": "string"
-          },
-          "type_id": {
-            "maximum": 9007199254740991,
-            "minimum": -9007199254740991,
-            "type": "integer"
-          }
-        },
-        "required": [
-          "kind",
-          "render_data",
-          "type_id"
-        ],
-        "type": "object"
-      },
-      {
-        "properties": {
-          "index": {
-            "maximum": 9007199254740991,
-            "minimum": 0,
-            "type": "integer"
-          },
-          "kind": {
-            "const": "shader",
-            "type": "string"
-          },
-          "name": {
-            "type": "string"
-          },
-          "owner": {
-            "$ref": "#/definitions/__schema0"
-          }
-        },
-        "required": [
-          "kind",
-          "owner"
-        ],
-        "type": "object"
-      },
-      {
-        "properties": {
-          "id": {
-            "type": "string"
-          },
-          "kind": {
-            "const": "gv_node",
-            "type": "string"
-          },
-          "name": {
-            "type": "string"
-          },
-          "tag": {
-            "$ref": "#/definitions/__schema0"
-          }
-        },
-        "required": [
-          "kind",
-          "tag"
-        ],
-        "type": "object"
-      },
-      {
-        "properties": {
-          "kind": {
-            "const": "plugin_options",
-            "type": "string"
-          },
-          "plugin_id": {
-            "anyOf": [
-              {
-                "maximum": 9007199254740991,
-                "minimum": -9007199254740991,
-                "type": "integer"
-              },
-              {
-                "type": "string"
-              }
-            ]
-          },
-          "plugin_type": {
-            "enum": [
-              "command",
-              "object",
-              "tag",
-              "material",
-              "shader",
-              "video_post",
-              "scene_loader",
-              "scene_saver",
-              "bitmap_loader",
-              "bitmap_saver",
-              "tool",
-              "preference",
-              "node",
-              "sculpt_brush"
-            ],
-            "type": "string"
-          }
-        },
-        "required": [
-          "kind",
-          "plugin_id"
-        ],
-        "type": "object"
-      }
-    ]
-  }
-}
    • removedInput schema / properties / handle / allOf
      Removed value: -[
-  {
-    "$ref": "#/definitions/__schema0"
-  }
-]
    • addedInput schema / properties / handle / anyOf
      Added value: +[
+  {
+    "properties": {
+      "kind": {
+        "const": "object",
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      },
+      "path": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "kind": {
+        "const": "render_data",
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "name"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "kind": {
+        "const": "take",
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "name"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "kind": {
+        "const": "material",
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "name"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "kind": {
+        "const": "layer",
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "name"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "kind": {
+        "const": "tag",
+        "type": "string"
+      },
+      "object": {
+        "type": "string"
+      },
+      "object_path": {
+        "type": "string"
+      },
+      "tag_name": {
+        "type": "string"
+      },
+      "type_id": {
+        "maximum": 9007199254740991,
+        "minimum": -9007199254740991,
+        "type": "integer"
+      }
+    },
+    "required": [
+      "kind"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "kind": {
+        "const": "video_post",
+        "type": "string"
+      },
+      "render_data": {
+        "type": "string"
+      },
+      "type_id": {
+        "maximum": 9007199254740991,
+        "minimum": -9007199254740991,
+        "type": "integer"
+      }
+    },
+    "required": [
+      "kind",
+      "render_data",
+      "type_id"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "kind": {
+        "const": "plugin_options",
+        "type": "string"
+      },
+      "plugin_id": {
+        "anyOf": [
+          {
+            "maximum": 9007199254740991,
+            "minimum": -9007199254740991,
+            "type": "integer"
+          },
+          {
+            "type": "string"
+          }
+        ]
+      },
+      "plugin_type": {
+        "enum": [
+          "command",
+          "object",
+          "tag",
+          "material",
+          "shader",
+          "video_post",
+          "scene_loader",
+          "scene_saver",
+          "bitmap_loader",
+          "bitmap_saver",
+          "tool",
+          "preference",
+          "node",
+          "sculpt_brush"
+        ],
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "plugin_id"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "index": {
+        "maximum": 9007199254740991,
+        "minimum": 0,
+        "type": "integer"
+      },
+      "kind": {
+        "const": "shader",
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      },
+      "owner": {
+        "additionalProperties": {},
+        "description": "Handle of the shader's owner (material, object, tag, video_post, or shader).",
+        "properties": {
+          "kind": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "kind"
+        ],
+        "type": "object"
+      }
+    },
+    "required": [
+      "kind",
+      "owner"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "id": {
+        "type": "string"
+      },
+      "kind": {
+        "const": "gv_node",
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      },
+      "tag": {
+        "properties": {
+          "kind": {
+            "const": "tag",
+            "type": "string"
+          },
+          "object": {
+            "type": "string"
+          },
+          "object_path": {
+            "type": "string"
+          },
+          "tag_name": {
+            "type": "string"
+          },
+          "type_id": {
+            "maximum": 9007199254740991,
+            "minimum": -9007199254740991,
+            "type": "integer"
+          }
+        },
+        "required": [
+          "kind"
+        ],
+        "type": "object"
+      }
+    },
+    "required": [
+      "kind",
+      "tag"
+    ],
+    "type": "object"
+  }
+]
  2. Changed1 schema field changedv0.4.3
    • changedInput schema / definitions / __schema0 / anyOf
      Previous value: -[
-  {
-    "properties": {
-      "kind": {
-        "const": "object",
-        "type": "string"
-      },
-      "name": {
-        "type": "string"
-      },
-      "path": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "kind"
-    ],
-    "type": "object"
-  },
-  {
-    "properties": {
-      "kind": {
-        "const": "render_data",
-        "type": "string"
-      },
-      "name": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "kind",
-      "name"
-    ],
-    "type": "object"
-  },
-  {
-    "properties": {
-      "kind": {
-        "const": "take",
-        "type": "string"
-      },
-      "name": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "kind",
-      "name"
-    ],
-    "type": "object"
-  },
-  {
-    "properties": {
-      "kind": {
-        "const": "material",
-        "type": "string"
-      },
-      "name": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "kind",
-      "name"
-    ],
-    "type": "object"
-  },
-  {
-    "properties": {
-      "kind": {
-        "const": "tag",
-        "type": "string"
-      },
-      "object": {
-        "type": "string"
-      },
-      "object_path": {
-        "type": "string"
-      },
-      "tag_name": {
-        "type": "string"
-      },
-      "type_id": {
-        "maximum": 9007199254740991,
-        "minimum": -9007199254740991,
-        "type": "integer"
-      }
-    },
-    "required": [
-      "kind"
-    ],
-    "type": "object"
-  },
-  {
-    "properties": {
-      "kind": {
-        "const": "video_post",
-        "type": "string"
-      },
-      "render_data": {
-        "type": "string"
-      },
-      "type_id": {
-        "maximum": 9007199254740991,
-        "minimum": -9007199254740991,
-        "type": "integer"
-      }
-    },
-    "required": [
-      "kind",
-      "render_data",
-      "type_id"
-    ],
-    "type": "object"
-  },
-  {
-    "properties": {
-      "index": {
-        "maximum": 9007199254740991,
-        "minimum": 0,
-        "type": "integer"
-      },
-      "kind": {
-        "const": "shader",
-        "type": "string"
-      },
-      "name": {
-        "type": "string"
-      },
-      "owner": {
-        "$ref": "#/definitions/__schema0"
-      }
-    },
-    "required": [
-      "kind",
-      "owner"
-    ],
-    "type": "object"
-  },
-  {
-    "properties": {
-      "id": {
-        "type": "string"
-      },
-      "kind": {
-        "const": "gv_node",
-        "type": "string"
-      },
-      "name": {
-        "type": "string"
-      },
-      "tag": {
-        "$ref": "#/definitions/__schema0"
-      }
-    },
-    "required": [
-      "kind",
-      "tag"
-    ],
-    "type": "object"
-  },
-  {
-    "properties": {
-      "kind": {
-        "const": "plugin_options",
-        "type": "string"
-      },
-      "plugin_id": {
-        "anyOf": [
-          {
-            "maximum": 9007199254740991,
-            "minimum": -9007199254740991,
-            "type": "integer"
-          },
-          {
-            "type": "string"
-          }
-        ]
-      },
-      "plugin_type": {
-        "enum": [
-          "command",
-          "object",
-          "tag",
-          "material",
-          "shader",
-          "video_post",
-          "scene_loader",
-          "scene_saver",
-          "bitmap_loader",
-          "bitmap_saver",
-          "tool",
-          "preference",
-          "node",
-          "sculpt_brush"
-        ],
-        "type": "string"
-      }
-    },
-    "required": [
-      "kind",
-      "plugin_id"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "properties": {
+      "kind": {
+        "const": "object",
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      },
+      "path": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "kind": {
+        "const": "render_data",
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "name"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "kind": {
+        "const": "take",
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "name"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "kind": {
+        "const": "material",
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "name"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "kind": {
+        "const": "layer",
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "name"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "kind": {
+        "const": "tag",
+        "type": "string"
+      },
+      "object": {
+        "type": "string"
+      },
+      "object_path": {
+        "type": "string"
+      },
+      "tag_name": {
+        "type": "string"
+      },
+      "type_id": {
+        "maximum": 9007199254740991,
+        "minimum": -9007199254740991,
+        "type": "integer"
+      }
+    },
+    "required": [
+      "kind"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "kind": {
+        "const": "video_post",
+        "type": "string"
+      },
+      "render_data": {
+        "type": "string"
+      },
+      "type_id": {
+        "maximum": 9007199254740991,
+        "minimum": -9007199254740991,
+        "type": "integer"
+      }
+    },
+    "required": [
+      "kind",
+      "render_data",
+      "type_id"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "index": {
+        "maximum": 9007199254740991,
+        "minimum": 0,
+        "type": "integer"
+      },
+      "kind": {
+        "const": "shader",
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      },
+      "owner": {
+        "$ref": "#/definitions/__schema0"
+      }
+    },
+    "required": [
+      "kind",
+      "owner"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "id": {
+        "type": "string"
+      },
+      "kind": {
+        "const": "gv_node",
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      },
+      "tag": {
+        "$ref": "#/definitions/__schema0"
+      }
+    },
+    "required": [
+      "kind",
+      "tag"
+    ],
+    "type": "object"
+  },
+  {
+    "properties": {
+      "kind": {
+        "const": "plugin_options",
+        "type": "string"
+      },
+      "plugin_id": {
+        "anyOf": [
+          {
+            "maximum": 9007199254740991,
+            "minimum": -9007199254740991,
+            "type": "integer"
+          },
+          {
+            "type": "string"
+          }
+        ]
+      },
+      "plugin_type": {
+        "enum": [
+          "command",
+          "object",
+          "tag",
+          "material",
+          "shader",
+          "video_post",
+          "scene_loader",
+          "scene_saver",
+          "bitmap_loader",
+          "bitmap_saver",
+          "tool",
+          "preference",
+          "node",
+          "sculpt_brush"
+        ],
+        "type": "string"
+      }
+    },
+    "required": [
+      "kind",
+      "plugin_id"
+    ],
+    "type": "object"
+  }
+]
  3. First observedv0.3.1

TDQS

A4.3/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full burden and does substantial work: it discloses that the graph is created on demand by default, that scene-nodes supports creation/connections/port values while queries and labels are material-only, and the id-wiring semantics. It omits reversibility, permissions, and error behavior, so it is strong but not exhaustive.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loads the purpose, then uses a compact worked example, then the mode-specific caveats. Every sentence carries information, though the scene-nodes asset-id caveat is a dense run-on that could be tightened.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a mutation tool with no annotations and no output schema, the description covers syntax, scope, defaults, and the critical asset-id pitfall. It does not describe what is returned (e.g. created node ids despite `$id` being mentioned), which an agent might want when chaining calls.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the baseline is 3, but the description goes beyond the schema by documenting the nested dict grammar ($type, $id, 'thisPort -> childPort' keys, inline port values) and the scope/node_space interplay with concrete examples. The handle types remain largely schema-only.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb pair (build/mutate) and resource (node graph) plus the mechanism (maxon.GraphDescription declarative dict syntax). It distinguishes the material path from the scene-nodes document path and names the sibling list_graph_node_assets as the source of valid `$type` ids, so an agent can place it among the graph tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives clear context for the two modes ('scope:"document"' for scene-nodes, default for materials) and warns which asset ids are invalid and where valid ones come from. It does not explicitly say when to prefer a sibling (e.g. set_graph_port for incremental edits) over a full description apply, so it stops short of full when-not guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Deploy Server

Other Tools