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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered, but the description adds nothing beyond that: no note on whether unplayed fixtures are included, whether results are attached, ordering, or that ids must be numeric SofaScore ids. For a read-only lookup this is thin.

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?

A single efficient sentence with the distinguishing scope ('one round') front-loaded and no filler. It is minimal rather than bloated, though the terseness edges toward under-specification.

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?

An output schema exists, so return values need not be described, and the three required params are fully documented in the schema. However, nothing tells the agent how to obtain the tournament or season ids (sibling sofascore_tournament_seasons), which is the main practical gap for invoking it successfully.

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?

With 100% schema description coverage, the schema already documents id, round and season with examples (17 for Premier League, 76986 for a season). The description only loosely reinforces the competition/season/round tuple and adds no format or sourcing detail, so the baseline 3 applies.

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 the resource (SofaScore fixtures) and the exact scope (one round of a competition season), which lets an agent distinguish it from sofascore_team_events or sofascore_live_events. It never names a sibling explicitly, so the differentiation is implied rather than stated.

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 when-to-use guidance, no exclusions, and no mention of the alternatives (e.g. team_events for a club's fixtures, live_events for in-progress matches). The agent must infer the selection condition from the scope phrase alone.

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