godot_run_project
Run the project (detached). Optionally start from a specific scene path (res://...). Returns the process id. Refuses if the runtime bridge port is already bound — the new game could not host the bridge, and every runtime_* call would address the process already holding the port. Use runtime_spawn...
This record as markdown: /tools/breakpoint-mcp/godot-run-project.md
What godot_run_project does on Breakpoint
AI agents invoke godot_run_project to trigger actions in 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.
| Parameter | Type | Required | Description |
|---|---|---|---|
scene | string | — | Optional scene to run, e.g. res://levels/test.tscn |
allow_port_conflict | boolean | — | Start even though the runtime bridge port is already bound (default false). The new game's runtime bridge will NOT be reachable — use only when you want the pro |
Parameters from the server's own tool schema.
Why godot_run_project is rated High
This tool triggers execution of a Godot game/project as a separate process. While not shell command execution in the traditional sense, it runs untrusted code (the Godot project itself) in an external runtime. An AI agent could be tricked into launching malicious projects or scenes, or launching projects with side effects (file I/O, network calls, resource consumption).
From the tool's definition The tool 'godot_run_project' runs the project and returns a process id. It 'Run[s] the project (detached)' and can 'start from a specific scene path', which means it executes external operations (launching a Godot game process) whose effects depend on…
Attacks that exploit this kind of access
The rule that runs godot_run_project 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 godot_run_project, this is the rule to start with:
godot_run_project 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Breakpoint, apply this rule, and every godot_run_project call is checked against it from then on.
Questions about godot_run_project
Run the project (detached). Optionally start from a specific scene path (res://...). Returns the process id. Refuses if the runtime bridge port is already bound — the new game could not host the bridge, and every runtime_* call would address the process already holding the port. Use runtime_spawn_peers to drive more than one game at once. It is categorised as a Execute tool in the Breakpoint MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
godot_run_project accepts 2 parameters: scene, allow_port_conflict. The full parameter table on this page comes from the server's own tool schema.
Register the Breakpoint MCP server in PolicyLayer and add a rule for godot_run_project: 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.
godot_run_project is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the godot_run_project 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.
Set action: deny in the PolicyLayer policy for godot_run_project. 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.
godot_run_project 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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