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

Annotations already declare readOnly, idempotent and closed-world, so safety is covered; the description adds real value by disclosing that it returns the newest round plus prior rounds and that results differ by game type (multipliers vs. animals). The warning that stake.com and stake.us operate independent chains is a genuine failure-prevention detail beyond the enum list.

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?

One dense sentence that front-loads the resource and packs the game-dependent output and chain separation without any filler.

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 an output schema present and both parameters being enums with defaults, the description covers what is needed to choose values correctly. The only omissions are the depth of 'rounds before it' and any rate or recency caveats, which are minor for a read-only lookup.

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, and it does: it clarifies that the game choice determines whether output is a multiplier or animals, and that the site choice selects between two independent chains. It does not state how many prior rounds are returned, which is the one remaining semantic gap.

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 resource: the newest round on a Stake Crash/Slide/Zoo hash chain plus the rounds preceding it, including each round's multiplier or animals. This clearly separates it from siblings like stake_verify_bets or stake_crash_odds, though it never names an alternative explicitly.

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 guidance on when to use this versus stake_verify_bets, stake_crash_droughts or stake_crash_odds; the only contextual sentence ('stake.com and stake.us run separate chains') is a data note, not a usage rule. The agent must infer the call context entirely.

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