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

With no annotations, the description must carry the burden of behavioral disclosure. It does mention the outcome ('public receipt plus a leaderboard point') but gives no detail on side effects (e.g., whether the answer is recorded publicly, if calls are idempotent, or any rate limits). It also doesn't clarify that this is a one-time daily case or that multiple submissions might be disallowed.

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 long and front-loaded with the case text, which is not a description of the tool itself. It wastes space on content that belongs in a prompt, not a tool definition. A concise definition would state 'Submits your verdict for today's SideEye case' and then include the case details if needed, but here the purpose is buried and the structure is not agent-friendly.

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 a simple submit action, but the description is missing the core purpose and usage guidance. It also doesn't explain what happens after submission (the receipt format or leaderboard update) nor that the case is only for today. Given no output schema, the description should clarify these, and it doesn't.

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 80% (4/5 params described), so the baseline is 3. The description adds contextual meaning for the 'choice' parameter by explaining what each option (a, b, both) represents in the case, but it does not elaborate on the other parameters beyond the schema. This adds some value but not substantial new semantic detail.

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 is dominated by the case content ('TODAY'S CASE: ...') rather than stating the tool's function. It never explicitly says 'this tool submits your answer to today's SideEye case' — the only hint is the title and the final line 'Pick a side... get a receipt'. An agent reading the description alone would likely mistake it for a prompt to answer, not a tool to invoke.

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 mention of when to use this tool versus siblings like answer_duel or cast_verdict. The description provides no exclusions, alternatives, or contextual triggers, leaving an agent to guess when 'play_sideeye' is appropriate.

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