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

Annotations already declare readOnlyHint and openWorldHint, so the safety profile is covered. The description usefully adds the input constraint that the URL must be canonical and that the data comes from a public page, but says nothing about result volume, ordering, or freshness beyond 'upcoming'/'recent'.

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 short sentences with zero filler: what it returns first, the input constraint second, the sourcing alternative last. Every sentence earns its place.

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 a single documented parameter, an output schema for return values, and annotations covering safety and open-world behavior, nothing material is missing for correct invocation.

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%, so the baseline is 3, but the description adds real meaning: the required format (https://www.cricinfo.com/cricket-grounds/...) and where to source a valid URL. That is more than the schema's bare 'Canonical Cricinfo cricket-ground URL'.

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 ('Returns upcoming fixtures and recent results listed on a public Cricinfo ground page') and names the sibling cricinfo_venue, so the agent can distinguish it. It stops short of clarifying how ground-page matches differ from cricinfo_calendar or cricinfo_scores output, which is why this is a 4 rather than a 5.

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?

Explicitly routes the agent: obtain a ground URL via cricinfo_venue before calling this, and use cricinfo_venue if a profile is what's wanted. It covers the prerequisite and one alternative but does not say when to prefer this over other match-listing siblings.

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