Create Three.js project

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

No annotations are provided, so the description carries the full burden. It discloses that the tool creates a project and opens the editor, but it does not mention important behavioral aspects such as whether an existing project with the same ID is overwritten, what happens on conflicts, or any side effects beyond opening the editor. The lack of such transparency is a notable gap for a creation tool.

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

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

The description is a single, front-loaded sentence that directly states the core action and the editor-opening side effect. It is concise, with no wasted words or redundant information, earning the highest score for efficiency.

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

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

The description covers the essentials for selecting and invoking the tool: it creates a project and opens the editor, and the schema provides required parameter info. However, it lacks details about projectId behavior, template differences beyond names, and any preconditions or return values (though an output schema exists). It is adequate but not rich, leaving several operational questions unanswered.

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

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

The schema has 0% description coverage, so the description must compensate. It only clarifies the 'template' parameter by naming 'empty' and 'Pong' (which the enum already lists), but it says nothing about the 'title' or 'projectId' parameters, their meaning, or validation behavior. The description adds minimal semantic value beyond the structured schema.

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

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

The description uses a specific verb ('Creates') and resource ('Three.js project'), and explicitly mentions the two template options ('empty or Pong'). It clearly distinguishes this tool from siblings like open_editor by including the creation action, and additionally states it opens the editor.

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

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

The description implies the primary use case: creating a new project and opening its editor. However, it does not explicitly state when to use this tool versus alternatives (e.g., open_editor or save_project_copy), nor does it mention any conditions or prerequisites. Usage context is implied but not explicit.

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