create_keyer

SERVERAos SOURCE@hybridlabor-api/aos

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/hybridlabor-api-aos/create-keyer.md

WHAT IT DOES

What create_keyer does on Aos

AI agents use create_keyer to create or update resources in Aos, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Aos environment.

RISK

Why create_keyer is rated Medium

This tool creates new compositing components (a baseCOMP) in TouchDesigner, which modifies the project state by adding new visual processing nodes. This is a reversible write operation—the created component can be deleted or modified. It does not execute arbitrary code, delete existing assets, or move money, making Write the appropriate category.

From the tool's definition Tool description states it "Creates a self-contained baseCOMP" which indicates creation of new components/objects in TouchDesigner. The verb 'Composite' and 'Creates' indicate data/asset generation rather than read-only operations.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_keyer safely

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

create_keyer Rate-limited

create_keyer 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_keyer": {
      "limits": [
        {
          "counter": "create_keyer_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about create_keyer

What does the create_keyer tool do? +

Composite a keyed performer, logo, or any source over a background visual — the green-screen / chroma-key / matte tool for installations and live camera work. Creates a self-contained baseCOMP under. It is categorised as a Write tool in the Aos MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_keyer? +

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

What risk level is create_keyer? +

create_keyer is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_keyer? +

Yes. Add a rate_limit block to the create_keyer 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 create_keyer completely? +

Set action: deny in the PolicyLayer policy for create_keyer. 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 create_keyer? +

create_keyer is provided by the Aos MCP server (@hybridlabor-api/aos). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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