fotmob_league

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

With no annotations, the description carries the burden and it does disclose the public nature of the payload and the league-dependent availability of sections ('where supplied by the league'). Still, it omits behavioral details such as expected response shape, error behavior on invalid IDs, or whether results are limited to a current season, so coverage is partial.

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 with no filler; the first sentence gives a compact label and the second adds the detailed section list. The only redundancy is that 'details and sections' is restated more precisely by the second sentence, so it is not perfectly tight.

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 one-parameter read tool with no output schema, the description provides a useful summary of the returned content and its variability across leagues. It doesn't detail the JSON structure or error cases, but an agent can select and invoke the tool with the documented league_id and set appropriate expectations for the response.

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's league_id description already explains its source (/fotmob/leagues) and numeric type. The tool description adds nothing about the parameter, so the baseline of 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?

The description states the tool returns FotMob's public league page payload and enumerates its major sections (table, fixtures, statistics, transfers, seasons), which is a specific verb+resource. This notably distinguishes it from sibling tools like fotmob_table, fotmob_transfers, and fotmob_team, which target narrower subsets.

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: the description positions this as the destination for league details and sections, and the schema's league_id description points to /fotmob/leagues as the source of IDs. However, it does not explicitly say when to use this tool over sibling tools such as fotmob_table or fotmob_transfers, nor does it state any exclusions or alternatives.

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