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

No annotations are provided, so the description must disclose behavior. It only says 'list' and mentions filtering, but does not describe return format, error handling, rate limits, or whether results are paginated (despite per_page parameter). It also omits the max look-back window (90 days) and the numeric limits already in the schema, which are important behavioral constraints. The description adds little beyond the obvious read-only nature.

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 two sentences, with the core action and scope in the first sentence and a usage hint in the second. There is no extraneous information; every word earns its place. The essential information is 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 list tool with no output schema, the description is reasonably complete but leaves some gaps. It does not describe the structure of returned documents (e.g., title, date, agency fields), which an agent might need to know for downstream processing. It also does not mention that the days window has a max of 90, though that is in the schema. Given the tool's simplicity, this is adequate but not fully thorough.

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 the baseline is 3. The description repeats the filtering by type and agency, and the look-back window, but adds no new meaning beyond the schema. It does not clarify agency slug format further or the meaning of 'per_page' beyond what the schema provides. Thus it adds minimal value over the schema.

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 verb (list), the resource (most recent Federal Register documents), and the key scoping concepts (filter by type and agency, look-back window). It also distinguishes itself from siblings like search_documents by framing this as a monitoring tool for newly published items, making its purpose unambiguous.

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 provides a clear when-to-use instruction: 'Use this to monitor newly published rules/notices from an agency.' This establishes the context and primary use case. However, it does not explicitly mention when not to use it or name alternatives like search_documents for broader queries, which would strengthen guidance further.

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