godot-mcp-extended

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set_node_property

Modify a node property in an existing Godot scene offline and headless, supporting primitives, arrays, and resource paths.

Instructions

Set a property on a node in an existing scene (offline, headless Godot)

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>",
      "scenePath": "<scenePath>",
      "nodePath": "<nodePath>",
      "property": "<property>",
      "value": "<value>"
    },
    "name": "set_node_property"
  }
}

Input Schema

Name	Required	Description
`value`	Yes	New value (primitives, arrays, or res:// resource path strings)
`nodePath`	Yes	Node path like root/Player (root = scene root)
`property`	Yes	Property name, sub-names allowed like position:x
`scenePath`	Yes	Scene file relative to project
`projectPath`	Yes	Path to the Godot project directory

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.3.0Oct 19, 2026

TDQS

B3.2/5.0

Behavior2/5

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

With no annotations, the description carries the full behavioral burden. It usefully discloses offline/headless execution mode, but omits mutation details such as whether missing properties are created, type coercion rules, permissions, reversibility, or whether changes are persisted.

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?

A single sentence, front-loaded with the action and scope, with zero wasted words. It is appropriately sized for this tool.

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?

For a five-required-parameter mutation tool with no annotations or output schema, the description is too thin. It does not explain return behavior, error cases, or whether the scene must be saved afterward, leaving key operational context missing.

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?

Schema description coverage is 100%, so all five parameters are fully documented in the schema. The description adds no parameter-specific semantics beyond general context, making the baseline 3 correct.

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?

States a specific verb 'set' and resource 'property on a node in an existing scene', and adds scope with 'offline, headless Godot'. It distinguishes from create_scene through 'existing scene', but does not explicitly differentiate from siblings like add_node or rename_node, so a 4 is appropriate.

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

Usage Guidelines3/5

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

No explicit when-to-use or when-not-to-use guidance is provided. The phrase 'existing scene' implies the scene must already exist, but alternatives and prerequisites are not named, so usage is only implied.

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