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

Annotations already declare readOnly, idempotent, non-destructive behavior, so the description's job is lighter. It still adds real value by disclosing the result cap (up to 10) and the returned fields (headline, date, summary, link), plus the upstream source domain — details not present in annotations.

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?

One compact sentence plus a short example; the source and result shape are front-loaded and nothing is wasted.

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 supplies the return shape and result limit, which is what an agent needs. The only gap is the absence of any hint about what happens when the keyword matches nothing — a minor omission for a simple one-optional-param read tool.

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 optional 'query' param is already documented with examples in the schema. The description restates the optional-keyword semantics and repeats an example ('Schiphol'), adding little beyond the structured field, 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 resource and source: newest Amsterdam news from essentiallyamsterdam.com, with optional keyword filtering. It is clearly distinguishable from sibling tools like whats_on or conferences by the news framing, though it never names an alternative explicitly.

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?

Use is implied by 'newest Amsterdam news... optionally by keyword' and reinforced with a worked example (query='Schiphol'), but there is no explicit when-to-use/when-not guidance or comparison against the sibling event/search tools.

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