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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety and open-web profile is covered structurally. The description adds that results come from a dedicated series page and enumerates the returned content (schedule + standings), but says nothing about freshness, page coverage limits, or failure modes for a malformed ID. With an output schema present, return-shape detail is not required, so a 3 is appropriate.

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?

Three sentences, front-loaded with the return payload and then the ID format, with no filler. The trailing calendar sentence is useful but slightly tangential to invoking this tool, keeping it just short of maximal efficiency.

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 single-parameter, read-only scrape with annotations covering safety and an output schema covering the response, the description supplies everything needed to call it correctly, including the exact ID format and an adjacent alternative. Only a note on data currency/coverage of the dedicated page is missing.

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%, so the baseline is 3, but the description exceeds the schema by giving a concrete example value ('indian-premier-league-2024-1410320') and tying it to a canonical series URL. That example is real added meaning over the schema's terse 'Slug-and-ID portion of a canonical series URL', and materially reduces the chance of a wrong-format call.

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 and resource pair plus the exact payload: 'Returns a series's match schedule and standings from its dedicated page.' It also names the sibling (cricinfo_calendar) it is adjacent to, so an agent can distinguish this series-level fetch from other Cricinfo tools without opening the schema.

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?

It routes one case explicitly ('Use cricinfo_calendar to get the Cricinfo international calendar'), which is genuine use-when guidance. However, it gives no condition distinguishing this from closer siblings like cricinfo_team_schedule, cricinfo_scores, or cricinfo_match, and no statement of when not to use it.

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