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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the description adds the genuinely useful facts: this is a deprecated alias retained for backward compatibility, and its output shape differs from `fetch`. It stops short of describing what the alternative shape is, which is the one remaining gap.

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 the legacy status and ending with the routing advice, so the important parts land first. The duplicated domain in parentheses and the double mention of 'previous name' are minor redundancy.

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 full schema coverage and annotations covering the safety profile, the description supplies exactly the missing context: deprecation status, the recommended replacement, and a warning that output differs. No output schema exists, but the pointer to `fetch` covers the practical need.

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?

There is a single parameter with 100% schema description coverage, so the schema already explains that a URL or path (Japanese characters allowed) is accepted. The description adds nothing about the parameter, which is acceptable at this coverage level but is baseline rather than additive.

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 that it returns a page body the same way as fetch, plus that it is the legacy name of that capability, which lets an agent tell it apart from `fetch` and `list_pages`. It is slightly less crisp because the 'different return shape' is never characterized, and the odd parenthetical repeat of the domain adds noise rather than signal.

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?

Explicitly says to use `fetch` for new usage and that this tool exists only for already-connected clients, which is a direct when-not-to-use statement plus a named alternative. Nothing about selection 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.