get_top_eu_tech_news

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

With no annotations the description carries the full burden, and it does disclose the ranking heuristic (recency, outlet weight, cross-outlet coverage) plus the default lookback window, which is real behavioral context. It stops short of return shape, max results, rate/permission needs, or how ties or sparse coverage are handled.

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 short sentences, front-loaded with what the tool returns and why it matters, with defaults inlined. No filler, though the topic-example parenthetical is slightly dense.

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?

No output schema and no annotations mean the description should be fuller: it says nothing about return fields, story counts, or how 'region' interacts with the European scope in the name. Adequate to call the tool, not complete enough to predict its behavior.

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 0%, so the description must compensate. It usefully documents 'topic' with example values and 'days' with range and default, but 'limit' and 'region' are left entirely undefined despite region having a default of 'europe' that an agent might reasonably want to override or confirm.

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 the specific resource (biggest European tech stories right now) and the ranking basis, which distinguishes it from the raw-search siblings like search_europe_tech_news. However, it never names a sibling or explicitly contrasts the ranked aggregation with get_europe_tech_news, so the agent must infer the split from the ranking phrase alone.

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?

'Best for daily briefings' gives one implied usage context, but there is no when-not guidance and no reference to the four sibling news tools, even though the difference between ranked top stories and a keyword search is exactly the decision an agent must make.

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