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

Annotations already declare readOnlyHint=true, destructiveHint=false, openWorldHint=false, so the safety profile is covered. The description adds that it is retained for backward compatibility and returns a different shape than fetch, which is useful, but with no output schema it never describes that shape or any size/pagination behavior.

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 closing with the actionable 'use fetch instead' recommendation. No padding, though the middle sentence about the different return shape is a promise without a payoff.

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 simple legacy read tool this covers the essential routing, but with no output schema and a statement that the return form differs from fetch, an agent still cannot anticipate what it will receive. The core 'different shape' claim is left unexplained.

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% for the single url parameter, and the description adds nothing about the parameter (e.g., accepted URL forms). Baseline 3 applies since the schema carries the semantics.

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 the verb/resource (returns the page body) and explicitly frames itself as the legacy alias of fetch for the site 買取大陸. It distinguishes itself from the sibling fetch by noting the return shape differs, though it never says how it differs, leaving the actual output semantics vague.

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 an explicit routing instruction: use fetch for new usage, keep this only for already-connected clients. That is a clear when/when-not with a named alternative, but it omits any condition under which get_page is still the preferred call.

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