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

No annotations are provided, so the description carries the full behavioral burden. It does disclose the returned content fields (headcount, Taiwan-time start, voice requirement, sign-up link), which is genuine value, but it says nothing about read-only nature, auth needs, pagination, or result freshness for an openly listed feed.

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?

A single front-loaded sentence with no filler. The dense field enumeration is slightly packed but each item earns its place by telling the agent what comes back.

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 usefully enumerates return fields, which covers part of the completeness requirement. However, it leaves usage routing and the platform filter's meaning unaddressed, so an agent gets a workable but not fully rounded picture.

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 50%: 'game' has a description (遊戲名稱關鍵字) while 'platform' is only an enum without prose. The description references 遊戲 and 平台 as content fields, implying they act as filters, but adds no matching syntax or semantics beyond the schema, so it neither compensates for the gap nor misleads.

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 specific resource and scope: open game LFG posts for Taiwanese players, enumerating the content carried (game, platform, headcount, start time, playstyle, voice, sign-up link). It is clear what the tool returns, but it never names a verb like 'list/查詢' and does not distinguish itself from the sibling open_game_trades or list_games.

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?

There is no when-to-use guidance, no exclusions, and no mention of alternatives such as open_game_trades or list_games. The agent must infer that this is the browse tool for open recruitment posts without any explicit routing signal.

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