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

Annotations already declare readOnly/idempotent/non-destructive, so the description's 'Read-only' line is redundant. However it adds genuinely useful behavior beyond the annotations: the meaning of each status value (awaiting_swing, open, delivered, released) and the explicit disclosure that the private order page is emailed and not returned here.

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 content is front-loaded (what it lists, then status glossary, then usage routing) and every clause carries information. The phrasing 'how each review is going' is slightly informal, and the trailing 'Read-only' repeats the annotation, but neither is costly.

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?

With no output schema, the description does the right work by defining the status vocabulary the agent will encounter and flagging what is deliberately absent (the order page/email link). It omits any note on ordering or volume of results, which is a minor gap for a list 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 takes zero parameters, so there is nothing for the description to disambiguate beyond the schema's empty object. Baseline 4 applies.

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 states a concrete verb and resource ('List what the player has bought from pros on Morris') and immediately scopes it to review status. It is clearly distinguishable from the sibling that returns the pro's actual reply, list_coaching_clips.

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?

It gives an explicit trigger ('Use it when they ask about a review') and routes the adjacent need to a named alternative ('the pro's answer itself is read with list_coaching_clips'). It stops short of excluding other nearby siblings such as get_my_pro_desk, so the routing is strong but not exhaustive.

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