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

Annotations already declare readOnlyHint=true and openWorldHint=true, and an output schema exists, so the safety and return-shape burden is largely covered elsewhere. The description contributes only the item types in the timeline and says nothing additional about freshness, live vs. final data, or how incomplete matches are handled.

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 short, front-loaded sentence with no filler. It is efficient, though at the cost of leaving scope and usage implicit.

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 annotations and an output schema, the description is minimally adequate: it tells the agent what content comes back. It does not connect the tool to a match id workflow or explain how it relates to sibling event endpoints, which is the main remaining gap.

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% and the id parameter is fully documented with format and example, so the schema does the heavy lifting. The description adds nothing about the id (e.g., that it is a match id, not a team or tournament id) beyond what the schema states.

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 names a specific resource and content type: a match timeline of goals, cards, and substitutions. That distinguishes it from the sibling event endpoints (lineups, statistics, odds, h2h), though it omits an explicit verb and never says it returns incidents for a single event by id.

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 guidance on when to call this versus sofascore_event, sofascore_event_statistics, or sofascore_event_lineups. The agent has to infer from the noun phrase alone that this is the endpoint for in-match scoring events.

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