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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety is covered. The description adds that results are a 'featured' directory 'snapshot' plus a country index, which hints at scope and boundedness, but says nothing about freshness, pagination, or the size/shape of the data returned.

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 no filler. The single misstep is ordering: the alternatives sentence could be merged, and the 'country index' purpose is described at the very end rather than front-loaded alongside the directory.

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 an output schema present, the description need not explain return values, and it correctly covers what this tool returns versus what the sibling returns. Only minor gaps remain around result size and refresh behavior.

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?

There is a single 'limit' parameter with 100% schema description coverage, so the schema already documents it and the description never mentions it. Baseline 3 applies since the description adds no parameter meaning beyond the schema.

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 the featured public ground directory snapshot plus the country index used to discover Cricinfo venue pages). It distinguishes itself from the sibling by naming cricinfo_venue as the profile tool, so an agent can tell them apart without opening schemas.

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: use the venue endpoint for detailed ground profiles and cricinfo_venue for a ground profile. There is no stated when-not case for this tool itself, and 'the existing venue endpoint' is loosely named, but the alternative routing is clear.

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