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

Annotations already cover read-only, idempotent, and non-destructive behavior, so the description does not need to restate those. It adds that each block declares verified sources and that the tool is a daily aggregate, which is useful context, but it does not disclose freshness, caching behavior, or how the input affects output. No contradiction with 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?

The description is information-dense and lists useful modules, but it starts with a redundant 'SYNTHORA daily-intel-brief:' prefix and ends with an incomplete fragment ('What a trading agen...'). It is not polished enough for a 4, though it is far more substantive than a minimal placeholder.

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?

The output schema and annotations cover result shape and safety, and the description names the main briefing modules. However, the optional input parameter is unexplained and the truncated final sentence leaves the value proposition incomplete, so an agent may not know whether or how to pass additional context.

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?

The only parameter is a generic 'input' string described as 'parametros del producto (JSON o texto)', which does not explain what content, topics, dates, or formatting are accepted. The tool description never mentions the parameter, so an agent gets no actionable guidance on how to customize the briefing. Schema coverage is high, but the schema description is too vague to earn the baseline 3.

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 tool as a consolidated daily intelligence briefing and lists concrete content areas: funding spreads, stablecoin depeg, US funding stress, chokepoint status, narrative tension, and executive alerts. This is more specific than a tautology, though it does not explicitly contrast with sibling tools such as macrobundle or funding_spread.

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 daily intelligence briefing in ONE call' gives explicit context: this tool is meant for a single consolidated daily overview, implying it replaces multiple individual data-tool calls. It does not provide when-not-to-use guidance or name alternative sibling tools, so it stops short of a 5.

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