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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety and external-data profile is covered. The description adds modest behavioral value: currency ('current'), single-section scope ('one public section'), and the section-source dependency, but says nothing about pagination or result volume.

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 the core purpose first and the constraint second; zero filler, and every clause (purpose, scope, section source) earns its place.

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, return values need not be explained, and the single parameter is fully documented in both schema and description. Annotations carry the safety profile, leaving little missing beyond pagination/volume details.

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% and the single 'section' parameter already enumerates all valid slugs, so the schema does the heavy lifting. The description adds the useful fact that values originate from nypost_sections, but no additional syntax or format detail. Baseline 3 is appropriate.

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 New York Post headlines') plus a scope constraint ('for one public section'), which is enough to tell it apart from a general news feed. It stops short of naming the closest sibling (nypost_news) or explicitly contrasting with it, so it does not reach full sibling differentiation.

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?

The clause 'section must come from nypost_sections' gives a concrete rule for populating the required parameter and points the agent at the sibling tool that supplies valid values. It establishes clear context but offers no explicit when-not or comparison to nypost_news / nypost_article.

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