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

No annotations are provided, and the description does not discuss any behavioral traits such as read-only nature, freshness, or rate limits. For a tool with no annotations, the description carries the full burden, which it does not satisfy beyond stating the aggregation.

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 a single sentence that is concise and front-loaded with the key idea. It wastes no words but could benefit from slight expansion, e.g., mentioning that it returns a brief.

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?

Given the tool has no parameters, no output schema, and is a simple aggregated brief, the description adequately states its purpose. It could be more complete by specifying the frequency or format of the brief, but it is sufficient for a low-complexity 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?

There are zero parameters and schema coverage is 100%, so no parameter explanation is needed. The baseline for zero parameters is 4, and the description adds no useful parameter info beyond that.

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 states the tool provides an aggregated daily brief combining 'phase_signal', 'ji_sensing', and 'indices'. This verb-resource pairing ('aggregated daily brief') is specific and distinguishes it from sibling tools that focus on individual signals.

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?

No explicit guidance on when to use this tool versus alternatives. It implies that this is for a combined daily overview, but does not state when not to use it or mention specific contexts like 'signal-latest'.

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