signal_add_user_signal

Declare a new user signal on a node (undoable). Optional typed arguments. Errors if the signal already exists.

SERVERGodot Breakpoint SOURCEjlivingston-Cipher/godot-breakpoint-mcp

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/godot-breakpoint-mcp/signal-add-user-signal.md

WHAT IT DOES

What signal_add_user_signal does on Godot Breakpoint

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

RISK

Why signal_add_user_signal is rated Medium

This tool creates/declares a new signal on a node, which is a modification to the node's structure and metadata. While it changes state, it is explicitly marked as undoable (reversible), and does not delete, execute arbitrary code, move money, or query data. This places it firmly in Write category (create operation).

From the tool's definition Tool description states it 'Declare a new user signal on a node (undoable)' - a create operation that modifies the node's signal definitions. The (undoable) note confirms reversibility, distinguishing this from Destructive actions.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs signal_add_user_signal safely

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

signal_add_user_signal Rate-limited

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

FAQ

Questions about signal_add_user_signal

What does the signal_add_user_signal tool do? +

Declare a new user signal on a node (undoable). Optional typed arguments. Errors if the signal already exists. It is categorised as a Write tool in the Godot Breakpoint MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on signal_add_user_signal? +

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

What risk level is signal_add_user_signal? +

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

Can I rate-limit signal_add_user_signal? +

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

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

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

KEEP EXPLORING

More on Godot Breakpoint, and thousands of servers like it.

This server

All 239 Godot Breakpoint tools →

Across the catalogue

add-tag on Kanban MCP Server →kb_add on Persistent Kb →add_video on Mcptube Vision → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →