node_set_owner

Set a node's owner (undoable). Owner must be an ancestor; "." or omitted sets the scene root. Ownership determines which scene a node is saved into.

SERVERBreakpoint SOURCEbreakpoint-mcp

Medium RISK CLASS

Category Write

Parameters 21 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/breakpoint-mcp/node-set-owner.md

WHAT IT DOES

What node_set_owner does on Breakpoint

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

Parameter	Type	Required	Description
`path`	string	Yes	Node path relative to the scene root
`owner_path`	string	—	Ancestor to own the node; "." or omitted for the scene root

Parameters from the server's own tool schema.

RISK

Why node_set_owner is rated Medium

This tool modifies node ownership metadata, which affects scene organization and persistence. While the operation is undoable (reversible), it is a Write operation that changes data structure. It does not execute arbitrary code, delete data irreversibly, or move money.

From the tool's definition Tool description states 'Set a node's owner (undoable)' and 'Ownership determines which scene a node is saved into.' The 'undoable' qualifier and context of modifying ownership metadata (determining which scene a node is saved into) indicates a reversible…

Risk signalsAccepts file system path (path) · Admin/system-level operation

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs node_set_owner safely

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

node_set_owner Rate-limited

node_set_owner 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": {
    "node_set_owner": {
      "limits": [
        {
          "counter": "node_set_owner_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 Breakpoint, apply this rule, and every node_set_owner call is checked against it from then on.

FAQ

Questions about node_set_owner

What does the node_set_owner tool do? +

Set a node's owner (undoable). Owner must be an ancestor; "." or omitted sets the scene root. Ownership determines which scene a node is saved into. It is categorised as a Write tool in the Breakpoint MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does node_set_owner accept? +

node_set_owner accepts 2 parameters: path, owner_path. Required: path. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on node_set_owner? +

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

What risk level is node_set_owner? +

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

Can I rate-limit node_set_owner? +

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

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

node_set_owner is provided by the Breakpoint MCP server (breakpoint-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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