create_external_io

Bridge TouchDesigner to the outside world: OSC/MIDI input (a control surface — bind incoming channels straight to parameters), OSC/MIDI output (send a CHOP

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-external-io.md

WHAT IT DOES

What create_external_io does on Aos

AI agents use create_external_io 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_external_io is rated Medium

This tool creates external I/O connections (OSC/MIDI input/output) and binds channels to parameters, which is a Write operation — it creates new nodes/bindings in the TouchDesigner project. The description is truncated, but the core action is creating/configuring network connections and parameter bindings, which is reversible.

From the tool's definition Bridge TouchDesigner to the outside world: OSC/MIDI input (a control surface — bind incoming channels straight to parameters), OSC/MIDI output (send a CHOP

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_external_io 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_external_io, this is the rule to start with:

create_external_io Rate-limited

create_external_io 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_external_io": {
      "limits": [
        {
          "counter": "create_external_io_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_external_io call is checked against it from then on.

FAQ

Questions about create_external_io

What does the create_external_io tool do? +

Bridge TouchDesigner to the outside world: OSC/MIDI input (a control surface — bind incoming channels straight to parameters), OSC/MIDI output (send a CHOP. 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_external_io? +

Register the Aos MCP server in PolicyLayer and add a rule for create_external_io: 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_external_io? +

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

Can I rate-limit create_external_io? +

Yes. Add a rate_limit block to the create_external_io 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_external_io completely? +

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

create_external_io 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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