remove_user_dataDelete a user data slot from a Cinema 4D object by its DescID path, with undo support.
Delete a User Data slot by its DescID path (as returned by list_user_data or add_user_data). Wrapped in undo.
| Name | Required | Description | Default |
|---|---|---|---|
| handle | Yes | Target. | |
| desc_id | Yes | DescID path — list of [id, dtype, creator?] levels. |
Changes observed during successful MCP inspections. Dates show when Glama detected each change.
v0.4.3Input schema / definitions / __schema0 / anyOfPrevious 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": {
- "allOf": [
- {
- "$ref": "#/definitions/__schema0"
- }
- ]
- }
- },
- "required": [
- "kind",
- "owner"
- ],
- "type": "object"
- },
- {
- "properties": {
- "id": {
- "type": "string"
- },
- "kind": {
- "const": "gv_node",
- "type": "string"
- },
- "name": {
- "type": "string"
- },
- "tag": {
- "allOf": [
- {
- "$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": {
+ "allOf": [
+ {
+ "$ref": "#/definitions/__schema0"
+ }
+ ]
+ }
+ },
+ "required": [
+ "kind",
+ "owner"
+ ],
+ "type": "object"
+ },
+ {
+ "properties": {
+ "id": {
+ "type": "string"
+ },
+ "kind": {
+ "const": "gv_node",
+ "type": "string"
+ },
+ "name": {
+ "type": "string"
+ },
+ "tag": {
+ "allOf": [
+ {
+ "$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"
+ }
+]v0.3.1Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The destructiveHint annotation already signals the operation is destructive. The description adds value by clarifying that deletion targets a specific User Data slot and that the operation is undoable, which is useful behavioral context beyond the raw annotation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
One sentence with no filler. It front-loads the action and resource, then packs the ordering method and undo behavior into a compact, easily parsed structure.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the simple two-parameter schema, the destructiveHint annotation, and the absence of an output schema, this description tells an agent everything needed to call the tool correctly: what is deleted, how to identify it, where to get the identifier, and what safety net exists.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema covers both parameters fully: handle is 'Target' and desc_id is 'DescID path — list of [id, dtype, creator?] levels.' The description adds a little context by pointing to list_user_data/add_user_data as the source of a valid path, but it does not carry the parameter-documentation burden.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description names a specific verb ('Delete'), a specific resource ('User Data slot'), and the exact addressing mechanism ('DescID path'). It clearly distinguishes this tool from siblings like list_user_data and add_user_data by focusing on deletion.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
It gives practical guidance by stating the DescID path is exactly what list_user_data or add_user_data returns, which tells the agent how to obtain valid input. It also mentions the operation is wrapped in undo, but it does not explicitly discuss when not to use this tool or compare it to alternatives.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
We provide all the information about MCP servers via our MCP API.
curl -X GET 'https://glama.ai/api/mcp/v1/servers/kumoproductions/mcp-cinema4d'
If you have feedback or need assistance with the MCP directory API, please join our Discord server