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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered structurally. The description adds nothing beyond that — no return shape, no note on what a PWA landing entry contains, no pagination behavior context.

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?

At three words it is technically concise, but the brevity comes from under-specification rather than efficiency. There is no structure to front-load because no substantive information is present.

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?

A paginated list tool with three fully documented parameters and rich annotations needs only a short clarifying sentence about what a PWA landing is and how it differs from list_landings. That clarification is entirely absent, leaving the agent unable to disambiguate among the many sibling list_* tools.

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%, with page, search and per_page each documented including defaults and the max of 100. The description contributes no additional parameter meaning, so the baseline of 3 applies since the schema does all the work.

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 is a bare noun phrase, 'PWA app landings.', that essentially restates the tool name and title without a verb or any scoping. It never clarifies whether it lists PWA landing pages, PWA apps, or something else, and it does not distinguish the tool from the sibling list_landings.

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?

There is no when-to-use guidance, no condition under which PWA listings should be fetched instead of list_landings, and no mention of prerequisites. The agent is left to infer usage entirely from the name.

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