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

Annotations already declare readOnlyHint, idempotentHint and a closed world, so the safety profile is covered. The description usefully adds that the return content includes a one-line purpose per component (relevant because there is no output schema), but says nothing about result volume or pagination.

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?

Two compact sentences with the scope (every component page) front-loaded before the optional filtering behavior. No filler and nothing that could be trimmed without losing information.

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-param, read-only list tool whose annotations and schema are fully populated, the description covers what is returned and how to narrow it. The only shortfall is the absence of any routing cue toward sibling list/search 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% and the package param already enumerates valid values, so the schema carries the detail. The description only restates the filter's effect, adding no syntax or format meaning beyond the schema. 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 resource (component pages) and organizing dimension (by package), plus that each entry includes a one-line purpose. It reads distinctly from list_blocks/list_charts/list_guides, but never explicitly contrasts itself with search_docs or get_page, which are the likely alternatives for the same audience.

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?

"Pass a package to see only its pages" documents the filtering behavior, which implies when to supply the optional param. However, there is no guidance on when to use this list versus search_docs or get_page, so the when-not-to-use case is left to inference.

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