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phaserjs

Phaser Editor MCP Server

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by phaserjs

ide-open-scene

Open a game scene in the editor by providing the scene's unique ID.

Instructions

Open the scene in the editor.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
sceneIdYesThe `id` of the scene. The `id` is not the name of the scene, else a unique identifier is set in the scene data. You need to read the scene data to get the `id`.
Behavior2/5

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

No annotations are provided, so the description carries full burden. 'Open' is vague; it does not disclose side effects (e.g., making the scene active), required permissions, or whether it closes other scenes. This is insufficient for a mutation-like action.

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

Conciseness4/5

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

The description is one short sentence with no wasted words. It is appropriately sized for a simple operation, though it might benefit from slight expansion. The structure is clear.

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

Completeness3/5

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

Given the tool's simplicity (one parameter, no output schema), the description is nearly adequate. However, for an 'open' action that likely changes editor state, more context on the effect (e.g., sets as active scene) would improve completeness.

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 coverage is 100% for the single parameter. The parameter description in the schema is detailed (explains sceneId is not the name). The tool description adds nothing beyond the schema, so baseline score 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 'Open the scene in the editor' clearly states the verb 'open' and the resource 'scene in the editor'. It distinguishes from siblings like 'ide-get-active-scene' and 'ide-save-scene' by implying a loading action, but does not explicitly differentiate.

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?

The description provides no guidance on when to use this tool vs alternatives (e.g., when to open versus get active scene or save). It lacks any context about prerequisites or conditions.

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

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