whitelist_add

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

No annotations are provided, and the description only says 'Add a player to the whitelist.' It doesn't disclose whether the whitelist must be enabled, whether the operation is idempotent, if it overrides existing entries, or any error conditions (e.g., player already whitelisted). The description carries the full burden of behavioral transparency and fails to provide it.

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 at one sentence with no fluff. It's front-loaded with the action. However, the conciseness comes at the cost of necessary details, but structurally it's efficient.

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?

For a tool with one parameter and a simple action, the description is minimal. But given the lack of annotations and output schema, and the presence of many sibling tools, a better description would have specified prerequisites (e.g., whitelist must be enabled), the format of the player parameter, and the expected result. It is inadequate for an agent to call this confidently.

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 zero description coverage (0%) for the 'player' parameter. The description adds no meaning beyond the parameter name itself. It doesn't clarify format (username? UUID?), whether it's case-sensitive, or any constraints (e.g., must be a valid player). This is a significant gap.

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 'Add' and the specific resource 'a player to the whitelist'. It distinguishes itself from sibling tools like whitelist_remove and whitelist_list (which show context). However, it doesn't specify which server or game the whitelist pertains to, leaving some ambiguity.

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 no guidance on when to use this tool versus alternatives. For instance, it doesn't mention whether the player must be online, if they should be added before they join, or that it operates on a specific server. It doesn't reference sibling tools like whitelist_remove or whitelist_list for context.

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