godot-mcp-extended

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run_project

Launch a Godot project from a specified path, capture debug output, and optionally run a specific scene to inspect runtime behavior.

Instructions

Run the Godot project and capture output

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "projectPath": "<projectPath>"
    },
    "name": "run_project"
  }
}

Input Schema

Name	Required	Description	Default
`scene`	No	Optional: Specific scene to run
`projectPath`	Yes	Path to the Godot project directory

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.3.0Oct 19, 2026

TDQS

C2.9/5.0

Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

There are no annotations, so the description must carry the behavioral burden. It mentions 'capture output' but does not disclose side effects, blocking behavior, or whether the process continues running after invocation. The name 'run_project' implies execution but lacks specifics about what the user will observe.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single concise sentence with no filler or redundant information. It efficiently conveys the primary purpose without unnecessary words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

No output schema is present, and the description does not clarify what 'capture output' means—whether it returns logs, exit codes, or streams. It also omits whether the tool blocks until the project closes or returns immediately. This leaves the agent uncertain about the expected behavior and return format.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema already provides full coverage for both parameters with their descriptions. The tool description adds no extra semantic detail beyond the schema, so it neither enhances nor detracts from the schema's clarity. The baseline of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a clear action ('Run') and object ('the Godot project'), plus a specific outcome ('capture output'). It is distinct from siblings like `launch_editor` or `stop_project`, though the phrase 'capture output' could be more detailed about what output is captured.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided about when to use this tool versus alternatives. It does not mention prerequisites, like whether the project must exist or if the Godot editor must be closed, nor does it explain the effect of the optional 'scene' parameter in context.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.