Unity API Communicator MCP Server

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It effectively adds context by stating it's 'read-only' (indicating safety) and 'no parameters required' (simplicity), which are crucial behavioral traits. However, it doesn't mention potential rate limits, error conditions, or response format details.

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 extremely concise and front-loaded, with every word earning its place: it states the action, resource, key behavioral traits, and even includes a category tag without redundancy. There's no wasted text.

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's low complexity (0 parameters, no output schema), the description is reasonably complete for a simple status check. However, without annotations or an output schema, it lacks details on what 'server status' includes (e.g., uptime, metrics) or the return format, leaving gaps for an agent.

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 input schema has 0 parameters with 100% coverage, so no parameter documentation is needed. The description correctly notes 'no parameters required', adding clarity beyond the empty schema. This compensates well, but since there are no parameters, it can't fully demonstrate semantic value.

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 tool's purpose with a specific verb ('Get') and resource ('server status'), making it immediately understandable. However, it doesn't differentiate from sibling tools like 'project_info' or 'console_logs' that might also provide status-related information, preventing a perfect score.

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 usage by mentioning it's 'read-only' and has 'no parameters required', which suggests it's a simple, safe operation. However, it doesn't explicitly state when to use this tool versus alternatives like 'project_info' or 'console_logs', leaving some ambiguity.

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