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

With readOnlyHint=true the safety profile is already covered, and the description still adds substantial behavior: the precedence order (call, then note, then chip and hours), that chip is only a ±2h threshold check that does not replace the call, that afterTip is a note rather than a flag, and that roof.status does not change the call. It also discloses licensing terms ('free for agents... not for model training'), which is unusual and useful context.

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?

Length is reasonable and the parameter guidance is front-loaded, but the back half becomes a telegraphic dump of field semantics ('call is the weather call', 'chip is...', 'afterTip is...') with no grouping or lead-in, which makes it harder to parse than the content warrants.

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?

There is no output schema, so the description must carry return-value meaning; it explains call, chip, afterTip, roof.status and changesSinceThursday, which is good, but 'note' and 'hours' are only mentioned in passing and never defined. For a tool whose entire payload is jargon, that leaves a real gap.

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 100%, so the baseline is 3, and the description earns above that by documenting the interaction the schema doesn't: 'A gameId selects that game's week when weekId is omitted' and 'omit weekId for the current week'. It also repeats usable examples (BUF/NE, 2026-w04-ne-buf) that reinforce the schema formats.

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 conveys that this returns a single game's weather/roof picture (call, chip, hours, roof status) and distinguishes itself implicitly from the week-level siblings like get_week_board. It never states the verb+resource plainly — 'One game' is closer to a title restatement — but the field-by-field explanation makes the tool's scope recognizable.

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?

It tells the agent how to identify a game (team or gameId, optional weekId) but never says when to reach for this tool instead of get_week_board, get_flags or get_report_card. There are also no exclusions or prerequisites for the call itself. Guidance is limited to parameter selection, not tool selection.

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