getCryptoNews

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

Annotations already declare readOnlyHint, openWorldHint, and idempotentHint, so the safety profile is covered. The description adds useful output-shape context (curated multi-source articles with headlines, snippets, and URLs), which matters because there is no output schema, but it says nothing about result volume, pagination, or recency ordering.

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?

Two sentences, one of which is marketing framing ('Stay informed with...') that carries no operational information. The second sentence does real work by naming the returned fields, but the whole thing would be stronger if the return shape were front-loaded.

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 read-only list tool with annotations covering safety, the description is adequate—and the field listing partially compensates for the missing output schema. It is still silent on pagination limits, default recency behavior, and the relationship to the searchCryptoNews sibling, which an agent would need to invoke it well.

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%, so all four parameters (from_date, to, page, limit) are already documented with formats and defaults in the schema. The description contributes no additional meaning such as how dates interact with the news window or how paging behaves across large result sets, 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?

The description clearly identifies the resource (latest cryptocurrency news articles) and adds concrete content detail: headlines, snippets, and publication URLs. It does not differentiate from near-identical siblings such as searchCryptoNews, getGeneralNews, or getForexNews, leaving the agent to infer why this one is the right pick.

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?

There is no when-to-use guidance, no mention of alternatives like searchCryptoNews for keyword-filtered retrieval, and no statement of what happens when no date range is supplied. The agent must guess whether this returns the newest articles by default or everything.

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