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

The annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds that the whole body is returned and that the id may be a search-result id or a raw URL/path, but says nothing about truncation, caching, or whether the fetch is live. With annotations carrying the safety burden, this is a modest but real addition.

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, front-loaded with what is returned, then the input, then the usage trigger. The parenthetical repetition of the domain name is the only wasted token, and the ordering is sensible.

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, annotations covering safety, and full schema description coverage, the description need not explain return values, and it doesn't. It leaves only the relationship to the sibling get_page unexplained, which is a minor but real completeness gap for a fetch-style tool.

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?

The schema documents the single id parameter at 100% coverage and already says a URL or path is acceptable. The description restates that same flexibility ('探した結果の id' or URL/path), adding only the provenance hint that ids come from search results, so it stays at the baseline rather than adding new meaning.

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 states a specific verb and resource: it returns the complete body text of a loaded page on pare-suitengumae.jp. That is clear enough to act on, but it never distinguishes itself from the sibling get_page, which by name sounds like it could do the same thing.

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?

It gives an explicit trigger for use: verify facts where accuracy matters (pricing, dates, conditions, terms) before answering. What is missing is the negative side — when to use search or search_pages instead — and no sibling is named as an alternative.

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