Add a primitive object to the Cinema 4D scene. Args: primitive_type: Type of primitive (cube, sphere, cone, cylinder, plane, etc.) name: Optional name for the new object position: Optional [x, y, z] position size: Optional [x, y, z] size or dimensions
AI agents use add_primitive to create or update resources in Cinema4D MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Cinema4D MCP Server environment.
The tool creates new scene data (primitive objects) but does not execute arbitrary code, delete data irreversibly, or move financial resources. It is a reversible Write operation that modifies the 3D scene state. Severity is medium because an AI misuse could clutter a scene with many objects, requiring manual cleanup, but Cinema 4D's undo/redo mitigates permanent damage.
From the tool's definition Tool description states 'Add a primitive object to the Cinema 4D scene' — this creates new objects in the scene. The parameters (primitive_type, name, position, size) control what is added. This is reversible (objects can be deleted/undone in Cinema 4D).
Documented attack patterns abuse exactly the kind of access add_primitive gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Cinema4D MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for add_primitive:
{
"version": "1",
"default": "deny",
"tools": {
"add_primitive": {
"limits": [
{
"counter": "add_primitive_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}add_primitive 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.
Free to start. No card required.
Add a primitive object to the Cinema 4D scene. Args: primitive_type: Type of primitive (cube, sphere, cone, cylinder, plane, etc.) name: Optional name for the new object position: Optional [x, y, z] position size: Optional [x, y, z] size or dimensions. It is categorised as a Write tool in the Cinema4D MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Cinema4D MCP Server MCP server in PolicyLayer and add a rule for add_primitive: 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 Cinema4D MCP Server. Nothing to install.
add_primitive 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 add_primitive 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 add_primitive. 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.
add_primitive is provided by the Cinema4D MCP Server MCP server (ttiimmaacc/cinema4d-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 25 Cinema4D MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
25 Cinema4D MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.