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 structurally. The description adds real value on top by disclosing the returned field set and the error behavior ('a player id returns not found'), which is not in the annotations. It omits rate limits or auth requirements, but those are minor here.

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?

Two sentences, front-loaded with the returned fields and then the id-sourcing guidance. Every clause carries information (payload, valid id source, invalid id type) with no redundancy or filler.

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 documented, yet the description still lists the fields helpfully; annotations cover the read-only safety profile. Combined with the id-sourcing and error note, it is nearly complete, lacking only explicit sibling routing for the fixture/squad/transfer variants.

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 100%, and the schema already specifies the eight-character team id, its origin in a public team URL (/team/<slug>/<id>/), and flashscore-search. The description restates this ('team id from flashscore_search or a team URL') and only marginally adds the player-id rejection case, so it sits at the baseline rather than extending schema meaning.

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 a specific verb ('Returns') plus the exact resource ('a Flashscore team's profile') and enumerates the payload fields (name, country, sport, logo, stadium/capacity, fixture competitions). The closing clause 'a player id returns not found' explicitly distinguishes it from flashscore_player, so an agent can separate it from siblings like flashscore_team_fixtures or flashscore_team_squad without opening schemas.

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?

Gives clear context for sourcing the argument ('a team id from flashscore_search or a team URL') and a concrete when-not case ('a player id returns not found'). It stops short of naming sibling alternatives such as flashscore_team_fixtures for full fixture lists, so routing among the team_* tools is left partly to inference.

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