get_lotto_4d_month

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

No annotations are provided, so the description bears full behavioral disclosure. It implies a read-only fetch of historical lottery data but doesn't state whether it's read-only, if there are rate limits, whether data is paginated, or if it returns partial data. The Args section adds only examples, not behavioral context.

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 front-loaded with the purpose, followed by a brief Args list. It's appropriately sized with no unnecessary sentences, though the Args formatting is slightly clunky.

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?

An output schema exists, so return values needn't be explained. However, with no annotations and 0% parameter schema coverage, the description should clarify more about parameter constraints and behavioral traits. It covers the bare minimum to invoke correctly but leaves gaps in usage guidance and parameter semantics.

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 description coverage is 0%, so the description must compensate. It provides example values ('e.g. 2024', 'e.g. 5'), which is helpful but minimal. It doesn't clarify format constraints (e.g., 1-12 for month) or whether 'year' is full YYYY or two-digit.

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?

States a clear verb-resource pair ('Get lottery, lotto 4d data') and names the temporal scope (specified month). Siblings are other lottery types, and the name 'lotto 4d' distinguishes it, but the description doesn't explicitly say how it differs from get_super_lotto_month or get_lotto_649_month. The parenthetical '4星彩' clarifies the specific game.

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?

No guidance on when to use this tool versus the sibling lottery tools (get_super_lotto_month, get_lotto_649_month, get_daily_cash_month). An agent must infer from the tool name which lottery game to pick. No exclusions or alternatives mentioned.

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