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

Annotations declare it as read-only and closed-world, and the description adds substantial behavioral context beyond that: injuries only apply to soccer, milestones appear only when statistics hold the whole season, and each item is also returned as a sentence in multiple languages. It does not contradict the annotations, though it does not discuss performance or error behavior.

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 a single very long, densely parenthetical sentence that is hard to scan. It contains relevant information but is poorly structured and front-loads little beyond the first clause, making it difficult for an agent to parse quickly.

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 complex briefing tool with no output schema, the description is quite complete: it enumerates the returned fields, conditional data availability, language handling, and the special tennis case. It could be clearer about what happens for unsupported sports, but overall it gives an agent enough to call correctly.

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 schema already defines all four parameters. The description adds marginal value by noting that team_id can come from find_teams or a match and that tennis uses a player id, but otherwise largely restates what the schema provides.

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 states a specific verb and resource: it produces a ready briefing for one team, with explicit sport exclusions (any sport but cricket; tennis uses a player id). It is clearly different from sibling tools like get_team or get_match_briefing, though it does not explicitly name those siblings to disambiguate further.

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?

Usage is implied by the content list and the note that team_id comes from find_teams or a match, but there is no explicit guidance on when to choose this briefing over get_team or get_match_briefing. The sport restriction (not cricket) is useful but does not cover tool selection.

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