cancel_render

Stop/cancel any currently running render in After Effects.

SERVERAe SOURCE@synthetic-ai/ae-mcp

Critical RISK CLASS

Category Destructive

Parameters 20 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/synthetic-ai-ae-mcp/cancel-render.md

WHAT IT DOES

What cancel_render does on Ae

AI agents call cancel_render to permanently remove resources in Ae, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

Parameter	Type	Required	Description
`timeoutMs`	number	—
`projectPath`	string	—

Parameters from the server's own tool schema.

RISK

Why cancel_render is rated Critical

An AI agent that decides to call cancel_render doesn't hesitate, doesn't double-check, and doesn't stop at one. Whatever it removes from Ae is gone. There is no undo for destructive operations.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs cancel_render safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Ae, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For cancel_render, this is the rule to start with:

cancel_render Hidden

cancel_render is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "cancel_render"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ae, apply this rule, and every cancel_render call is checked against it from then on.

FAQ

Questions about cancel_render

What does the cancel_render tool do? +

Stop/cancel any currently running render in After Effects. It is categorised as a Destructive tool in the Ae MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

What parameters does cancel_render accept? +

cancel_render accepts 2 parameters: timeoutMs, projectPath. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on cancel_render? +

Register the Ae MCP server in PolicyLayer and add a rule for cancel_render: 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 Ae. Nothing to install.

What risk level is cancel_render? +

cancel_render is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit cancel_render? +

Yes. Add a rate_limit block to the cancel_render 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.

How do I block cancel_render completely? +

Set action: deny in the PolicyLayer policy for cancel_render. 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.

What MCP server provides cancel_render? +

cancel_render is provided by the Ae MCP server (@synthetic-ai/ae-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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