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

Annotations already establish readOnly, idempotent, non-destructive and closed-world behavior, so the safety profile needs no restating. The description adds genuinely useful context beyond them: the output is markdown including a canonical URL for citation and the page's dates. It does not mention rate limits, auth, or failure behavior, keeping it short of a 5.

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 tight sentences, front-loaded with the use case, then the return value, then the precondition. Every sentence carries distinct information with no filler.

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 no output schema, the description correctly compensates by naming the return format (markdown + canonical URL + dates), and it covers the use case and precondition fully for a one-parameter read tool. Only edge-case behavior (e.g., invalid/expired id) is left unstated, which is minor given the annotations.

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 coverage is 100% and the single 'id' parameter is fully documented in the schema (type, minLength, example). The description only reinforces the same constraint that the id originates from search, adding little beyond the schema, so the baseline of 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?

The description states a concrete verb+resource (read a page and return its content as markdown) and immediately names the return payload, so an agent knows exactly what it gets back. It is clearly distinguishable from the sibling 'search' by the precondition that the id must come from a search result.

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 ('when a search result looks right and you need what the page actually says before answering') and an explicit prohibition ('Do not use it without an id from search'), effectively routing the agent to search first. Both a when and a when-not are present.

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