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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds that it returns the entire page body and is scoped to one site, which is useful, but says nothing about truncation limits, pagination, or what happens with an invalid id.

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 that front-load what the tool returns before explaining the id and the accuracy rationale. No filler, though the embedded domain and course name adds some noise without much functional value.

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 one-parameter read tool with an output schema (so return values need not be described), the description covers what it returns, where the id comes from, and when to call it. The one missing piece is how it relates to the near-identical sibling get_page.

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 id parameter's schema description already states it accepts a search-result id, URL, or path, including Japanese. The description largely repeats that ('探した結果の id ... か、ページの URL・パスを渡します') rather than adding syntax or format detail beyond the schema, 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 and resource in Japanese: it returns the full body text of a loaded page on a named domain. The scope (whole body text, specific site) is concrete. However, it never distinguishes itself from the sibling get_page, which by name alone appears to do something very similar, so an agent cannot route between them from this text.

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?

Gives a clear condition for use: verify the page body before answering when accuracy matters (pricing, dates, conditions, terms), and explains where the id comes from (search results). It offers context but no exclusions and no explicit comparison to alternatives like get_page or search_pages.

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