Unity API Communicator MCP Server

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 states it lists cameras with settings, implying a read-only operation, but doesn't disclose behavioral traits like whether it requires scene access permissions, if it returns real-time or cached data, or how it handles empty scenes. For a tool with zero annotation coverage, this leaves significant gaps in understanding its behavior.

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, efficient sentence that front-loads the core action ('List all cameras') and adds specific details about included settings. Every word earns its place with no redundancy or unnecessary elaboration, making it highly concise and well-structured.

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?

Given the tool has 0 parameters, no annotations, and no output schema, the description is moderately complete. It explains what the tool does and what information it returns (cameras with specific settings), but lacks details on output format (e.g., list structure, data types) and behavioral context (e.g., permissions, performance). For a simple listing tool, this is adequate but has clear gaps.

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 tool has 0 parameters, and schema description coverage is 100%, so there are no parameters to document. The description doesn't need to add parameter semantics beyond what the schema provides. A baseline of 4 is appropriate since there's nothing missing, but it's not a 5 as it doesn't compensate for any schema gaps (none exist).

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 clearly states the verb 'List' and resource 'cameras in the scene', specifying what settings are included (FOV, orthographic, depth, clip planes). It distinguishes from siblings like camera_capture or camera_configure by focusing on listing rather than modifying or capturing. However, it doesn't explicitly differentiate from assets_list or gameobject_list, which are also listing tools.

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?

No guidance is provided on when to use this tool versus alternatives. The description doesn't mention when you'd want to list cameras (e.g., for inspection before configuration) or when not to use it (e.g., if you already know the camera ID). It also doesn't reference sibling tools like camera_configure or camera_create as alternatives for different needs.

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