runtime_call_method

Invoke a method on a live node. DESTRUCTIVE (arbitrary invocation) — gated by confirmation. Args use the tagged-Variant convention.

SERVERGodot Breakpoint SOURCEjlivingston-Cipher/godot-breakpoint-mcp

High RISK CLASS

Category Execute

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/runtime-call-method.md

WHAT IT DOES

What runtime_call_method does on Godot Breakpoint

AI agents invoke runtime_call_method to trigger actions in Godot Breakpoint. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why runtime_call_method is rated High

This tool executes arbitrary methods on live Godot nodes at runtime. While the description labels it 'DESTRUCTIVE' and includes confirmation gating as a safeguard, the primary capability is method invocation rather than irreversible deletion.

From the tool's definition Tool description states 'Invoke a method on a live node' with explicit warning 'DESTRUCTIVE (arbitrary invocation)' and notes confirmation gating. The 'arbitrary invocation' language indicates the tool can execute any method the Godot runtime exposes.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

runtime_call_method Rate-limited

runtime_call_method stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "runtime_call_method": {
      "limits": [
        {
          "counter": "runtime_call_method_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-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 runtime_call_method call is checked against it from then on.

FAQ

Questions about runtime_call_method

What does the runtime_call_method tool do? +

Invoke a method on a live node. DESTRUCTIVE (arbitrary invocation) — gated by confirmation. Args use the tagged-Variant convention. It is categorised as a Execute tool in the Godot Breakpoint MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on runtime_call_method? +

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

runtime_call_method is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit runtime_call_method? +

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

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

runtime_call_method 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.

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