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mcp-cinema4d

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Import / Merge Scene File

import_scene

Merge external 3D files (ABC, FBX, OBJ, C4D) into the active Cinema 4D scene, returning imported top-level objects for chaining with set_params, create_entity, or create_take. Optionally re-parent and rename the first root.

Instructions

Merge an external file (abc/fbx/obj/c4d/etc.) into the active document via MergeDocument. Returns the newly-imported top-level objects so they can be chained with set_params / create_entity / create_take. Optionally re-parents them under an existing object and renames the first root.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
pathYesAbsolute path to the file to merge (abc/fbx/obj/c4d/...).
filterNoScene filter (default "all").
parentNoOptional parent handle — newly-imported top-level objects are moved under this object.
renameNoOptional new name for the first imported top-level object.

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. 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"
+  }
+]
  2. First observedv0.3.1

TDQS

A4.4/5.0
Behavior4/5

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

With no annotations, the description carries the full behavioral burden. It discloses the mutation of the active document, the return of top-level objects, and the optional re-parenting/renaming side effects. It does not discuss failure modes or undo semantics, but the core behavior is transparent and specific.

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

Conciseness5/5

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

Two well-structured sentences: the action and return value come first, followed by optional behavior. Every clause earns its place, and there is no repetition of schema details or filler.

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?

Given no output schema and no annotations, this description does most of the work: purpose, target document, return value, and optional parameter effects are all covered. It leaves the requirement of an active document implicit and does not enumerate every supported format, but the schema fills parameter shape and the chaining hint completes the practical picture.

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?

All four parameters are already described in the schema, so the baseline is 3. The description adds real value by explaining that 'parent' moves the newly imported top-level objects under an existing object and that 'rename' only affects the first root, which is not inferable from parameter names alone.

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 (merge/import), the resource (external file), the target (active document), and even the underlying method (MergeDocument). It also tells what is returned and which sibling tools the output can be chained with, making it clearly distinct from open_document or new_document.

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?

The description clearly establishes the use case: merging external files into the active document while keeping the scene open, and the returned objects are explicitly meant for chaining. It does not name alternative tools explicitly or state when not to use it, but the context is unambiguous enough for selection.

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

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