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

Annotations already declare non-readOnly, non-destructive, idempotent. The description adds real behavioral detail on top: the stake is refunded, and the seat becomes irrevocable once the round locks. It stops short of describing the response payload or any failure modes.

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?

Two tight clauses with zero filler; the operative precondition (round still open) is front-loaded before the fallback behavior.

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 state-changing tool with no output schema, the description covers timing, refund, and the post-lock alternative. Only minor gaps remain, such as what the return value or error surface looks like.

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?

Only one parameter (game) and the schema already documents it fully as a gameHash or "arena". The description adds no parameter-level detail, so the schema carries the entire burden — the expected baseline when coverage is 100%.

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 specific action (give up your seat) with the key precondition (round still open) and side effect (stake returns), which cleanly separates it from siblings like wait_for_round and join_room.

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?

Explicitly frames the window in which the tool applies and, in the same breath, what replaces it after the round locks (the result comes from wait_for_round). This is when-to-use plus a named alternative.

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