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

Annotations only declare readOnlyHint and openWorldHint; the description adds two pieces of real behavioral context the annotations lack: the payload arrives in the provider's raw delimited format (not parsed/structured), and video content itself is not fetched, only links and metadata. That is meaningful disclosure about what the caller actually gets.

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?

One compact sentence with no filler, and the core resource is front-loaded. The trailing 'video content is not fetched' clause is well placed as a qualifier rather than padding.

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-value documentation is unnecessary, and the description still adds the two things an agent most needs to know beyond the schema: the return encoding (raw delimited) and that no video bytes are fetched. Complete for a single-parameter read tool.

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 single id parameter is fully documented there (eight-character Flashscore match id from a public match URL). The description adds nothing about the id, so the baseline 3 applies when the schema carries the parameter burden.

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+resource pair (match highlight metadata and video links) and even flags the raw delimited return format, which clearly separates it from siblings like flashscore_match_stats or flashscore_match_info. It does not name those siblings explicitly, so an agent must infer the boundary from the resource wording alone.

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 and no alternative named. The phrase 'video content is not fetched' implies a scope limit, but the description never says when an agent should pick this tool over flashscore_match_info, flashscore_match_news, or flashscore_match_stats.

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