Set a keyframe for an object property. Args: object_name: Name of the object property_name: Name of the property to keyframe (e.g., 'position.x') value: Value to set at the keyframe frame: Frame number to set the keyframe at
AI agents use set_keyframe 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.
Setting keyframes creates or modifies animation data in Cinema 4D. This is a reversible operation (keyframes can be deleted or modified), so it falls under Write rather than Destructive.
From the tool's definition Tool sets a keyframe for an object property, which modifies animation data in the 3D scene. The description states it 'Set[s] a keyframe for an object property' with parameters to specify the object, property, value, and frame number.
Documented attack patterns abuse exactly the kind of access set_keyframe 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 set_keyframe:
{
"version": "1",
"default": "deny",
"tools": {
"set_keyframe": {
"limits": [
{
"counter": "set_keyframe_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}set_keyframe 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.
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Set a keyframe for an object property. Args: object_name: Name of the object property_name: Name of the property to keyframe (e.g., 'position.x') value: Value to set at the keyframe frame: Frame number to set the keyframe at. 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 set_keyframe: 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.
set_keyframe 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 set_keyframe 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 set_keyframe. 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.
set_keyframe 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.