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

Annotations already declare readOnlyHint=true and openWorldHint=true. The description adds value by specifying the return limit (up to 5 recent items) and the payment model for the full feed. No contradictions 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 very concise at three sentences, front-loading the core purpose. Every sentence adds necessary information (purpose, return limit, payment model). No wasted words.

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 simple nature of the tool (one optional parameter, output schema exists), the description covers the essential aspects: what it does, return limit, and premium version. It could be improved by noting that the 'since' parameter is optional or describing the output format, but overall it is sufficient.

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% for the single 'since' parameter, with a clear description in the schema. The tool description does not add extra meaning beyond what the schema already provides, so baseline score of 3 is appropriate.

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 it provides a free preview of recent Federal Register regulatory actions in a tracked industry vertical. It specifies the return limit of up to 5 items. While the tool name and title help distinguish it from siblings, the description does not explicitly contrast with other preview tools like tariffwatch_preview.

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 description mentions it is a free preview and that the full version is paid, implying limited usage. However, it provides no guidance on when to use this tool versus sibling tools like depwatch_preview or tariffwatch_preview. The context of tracked industry vertical is implied but not elaborated.

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