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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds that only already-ingested ('已入库') seasons and stages are returned, which is genuinely useful scope context, but it says nothing about pagination behavior despite exposing limit and cursor.

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 compact sentence with the resource and the purpose front-loaded and no redundant wording. It is efficient, though the terseness contributes to the missing pagination context.

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?

With no output schema, the description carries the burden of explaining return values; it names stage_id but not the rest of the returned season/stage shape. Combined with the unexplained limit and cursor parameters, an agent can call it but cannot predict paging or full result structure.

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 only 33%: competition_id is documented in the schema itself, while limit and cursor have no descriptions anywhere. The description adds no meaning beyond the schema and does not mention paging at all, leaving two of three parameters unexplained.

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 verb and resource ('列出已入库赛季和阶段' – list stored seasons and stages) and states the downstream purpose of the result (obtaining the stage_id needed for fixture and team queries). It does not name any sibling tool, so an agent must still infer its place relative to get_fixtures or list_competitions.

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 through a workflow cue: call this to get the stage_id before querying fixtures or teams. There is no explicit when-not-to-use guidance and no named alternative, so the routing decision 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.