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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds pagination behavior via cursor, which is genuine extra context, but it says nothing about auth requirements, rate limits, result caps, or whether results are scoped by the required country/locale.

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 front-loaded sentence with no waste; the resource and scope lead, and the pagination note follows compactly.

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?

An output schema exists, so return values need not be described, and the 100%-covered input schema carries the parameter burden. What remains thin is routing guidance relative to the many microsoftstore_* siblings, which the description never addresses.

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 every one of the eight parameters is documented in the schema, including allowed value sets for MediaType, Price, and Age. The description adds no parameter-level detail beyond echoing the media types, so the baseline 3 applies.

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 (Search) and resource (Microsoft Store) and enumerates scope (apps, games, devices, other listings), which maps to the MediaType parameter. However, it does not distinguish this tool from siblings like microsoftstore_suggest, microsoftstore_spotlight, or microsoftstore_charts, so an agent cannot tell from the description alone why it would pick this one.

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?

The only usage guidance is the pagination mechanism ('paginated via cursor'), which explains how to page but not when to choose this tool. There is no statement of when to use search versus microsoftstore_suggest (autocomplete) or the curated microsoftstore_spotlight/charts/recommended endpoints.

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