control_set_layout_preset

SERVERBreakpoint SOURCEbreakpoint-mcp

Medium RISK CLASS

Category Write

Parameters 42 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/breakpoint-mcp/control-set-layout-preset.md

WHAT IT DOES

What control_set_layout_preset does on Breakpoint

AI agents use control_set_layout_preset 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	Control node path relative to the scene root
`margin`	integer	—	Margin in pixels applied by the preset (default 0)
`preset`	string \| number	Yes	LayoutPreset name or integer (0..15)
`resize_mode`	integer	—	LayoutPresetMode 0..3 (default 0 = min size)

Parameters from the server's own tool schema.

RISK

Why control_set_layout_preset is rated Medium

This tool creates or modifies UI layout configuration in a reversible manner (marked as 'undoable'). It changes visual positioning and sizing properties of UI controls, which is a write operation. Severity is medium because the changes are reversible and limited to UI state rather than data or system commands; however, it could affect application appearance and functionality if misused.

From the tool's definition Tool applies a LayoutPreset to a Control via set_anchors_and_offsets_preset (undoable), modifying UI layout properties like anchors, offsets, and margins.

Risk signalsAccepts file system path (path)

Attacks that exploit this kind of access

RECOMMENDED RULE

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

control_set_layout_preset Rate-limited

control_set_layout_preset 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": {
    "control_set_layout_preset": {
      "limits": [
        {
          "counter": "control_set_layout_preset_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 control_set_layout_preset call is checked against it from then on.

FAQ

Questions about control_set_layout_preset

What does the control_set_layout_preset tool do? +

Apply a LayoutPreset to a Control via set_anchors_and_offsets_preset (undoable). 'preset' is a name (full_rect, center, top_left, center_top, left_wide, hcenter_wide, …) or the integer enum value. Optional resize_mode (0=min_size,1=keep_width,2=keep_height,3=keep_size) and margin. 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 control_set_layout_preset accept? +

control_set_layout_preset accepts 4 parameters: path, margin, preset, resize_mode. Required: path, preset. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on control_set_layout_preset? +

Register the Breakpoint MCP server in PolicyLayer and add a rule for control_set_layout_preset: 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 control_set_layout_preset? +

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

Can I rate-limit control_set_layout_preset? +

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

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

control_set_layout_preset 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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