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

Annotations already declare readOnlyHint=true and openWorldHint=true, covering the safety and scope profile. The description adds freshness ('Current') and the one-section-per-call limit, which is modest extra value beyond the structured fields.

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?

A single front-loaded sentence with no waste; the scope constraint and the prerequisite are both stated compactly.

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?

An output schema exists, so return values need no explanation, and annotations carry the safety profile. The description covers freshness, scope, and the parameter prerequisite, leaving only minor unaddressed details like ordering or headline count.

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 schema itself enumerates all valid section slugs, so the description largely repeats what is already documented. It adds a useful sourcing hint ('must come from engadget_sections') but no format or matching semantics beyond that, so 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 ('Current Engadget headlines') plus a scope constraint ('for one public section'), so an agent knows exactly what comes back. It routes to engadget_sections but doesn't explicitly distinguish itself from engadget_article or engadget_news, which are the other likely candidates.

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 concrete usage rule: the section value must originate from engadget_sections, which is an actionable prerequisite. It stops short of stating when to prefer this over engadget_news or engadget_article, so it's clear context without explicit exclusions.

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