emojilist

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. The single-word description 'emojiList' reveals nothing about the tool's behavior - whether it's a read or write operation, what permissions it requires, whether it has side effects, rate limits, or any other behavioral characteristics. This represents a complete failure to inform the agent about how the tool behaves.

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?

While technically concise with just one word, this represents under-specification rather than effective conciseness. The description fails to provide any meaningful information that would help an agent understand or use the tool. A single word cannot be considered 'appropriately sized' for a tool that presumably has some function.

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 complete lack of annotations, no output schema, and a description that provides zero functional information, this description is completely inadequate. The agent cannot determine what the tool does, when to use it, how it behaves, or what it returns. This represents a severe failure of contextual completeness for any non-trivial tool.

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 zero parameters, and schema description coverage is 100% (though trivial since there are no parameters). With no parameters to document, the description doesn't need to compensate for any schema gaps. The baseline for zero parameters is 4, as there's no parameter information that could be missing or incomplete.

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?

Tautological: description restates name/title.

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 provides absolutely no guidance about when to use this tool versus alternatives. With 80+ sibling tools on the server, the agent receives no context about appropriate use cases, prerequisites, or distinctions from similar tools. This leaves the agent completely without direction for tool selection.

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