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

Annotations already declare readOnlyHint=true, idempotentHint=true, and openWorldHint=false, so the safety profile is covered. The description adds useful return-category context (RTP, win chance, top payout), but it does not disclose calculation assumptions, permissions, or other behavioral constraints beyond what the annotations and output schema already provide.

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 compact, front-loaded with the core result, and uses examples rather than redundant explanation. The first sentence is dense but every clause earns its place.

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?

The tool is complex: 29 game enum values and a nested options object with many game-specific fields. The description samples only a few configurations, so an agent must rely heavily on the schema and output schema for the rest. It is adequate but not fully complete for calling across all supported games.

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 reported as 0%, so the description must carry parameter meaning. It does this for a few cases (Mines with mines/gems, Keno risk/picks, Plinko rows/risk, Dice over 50), but it leaves most of the many game-specific options undocumented, so compensation is only partial.

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 names a specific resource and scope: multipliers and exact result chances for one Stake Original at one setting, with examples such as Mines, Keno, Plinko, and Dice. It clearly says what the tool returns (RTP, win chance, top payout), though it does not explicitly distinguish itself from sibling odds tools like stake_crash_odds.

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 examples imply how to call the tool for a few games, but there is no explicit when-to-use guidance, no when-not-to-use guidance, and no named alternatives such as stake_crash_odds or stake_house_edge. Usage is therefore inferred rather than directed.

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