player_current_rewards

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

With no annotations, the description carries the full burden of behavior disclosure. It does this well: it describes the observed response shape (season_reward_info), notes field nullability and missing type declarations, distinguishes observed numeric fields (wild and survival), and explicitly warns that a missing value is not evidence of zero earnings. This is far more candid than typical descriptions.

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 purpose is front-loaded in the first sentence, and every subsequent sentence adds meaningful caveats about observed response behavior. The description is detailed but compact, with no filler or repetition.

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 single-parameter read tool with no output schema, the description provides a useful picture of the response object and its uncertainties. It lacks a few practical details, such as exact field names and error behavior for an unknown username, but it is reasonably complete for invoking the tool correctly.

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?

Schema coverage is 0%, so the description must compensate. It partially does by saying the tool returns totals 'for one account,' which implies the `username` parameter identifies that account. However, it never explicitly links the required `username` parameter to the account selection, and it does not describe expected username format beyond the schema's minLength.

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 opens with a specific verb and resource: 'Return the current season's glint totals for one account from GET /players/current_rewards.' The 'current season' qualifier clearly differentiates it from sibling tools like player_last_season_rewards, and the object of the operation is unambiguous.

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 'current season' wording implies this tool is for current-season rewards rather than historical ones, but the description never explicitly contrasts this tool with player_last_season_rewards, player_last_focus_rewards, player_unclaimed_balances, or other reward-related siblings. Usage context is implied, not stated.

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