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

With no annotations, the description carries the burden of explaining behavior. It discloses that the tool returns key financial details and SEC prospectus links, implying a read-only operation. However, it does not mention any constraints, pagination, date range behavior, or potential variations in response.

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 three sentences and efficiently conveys the main purpose, sample data, and use case. It is slightly promotional ('comprehensive information') but remains reasonably concise and front-loaded with the core action.

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 tool is relatively simple with two optional date parameters and no output schema. The description lists some output fields and SEC links, but it does not explain how the date range filters results, whether all IPOs are returned, or any defaults. For a data retrieval tool, this is adequate but leaves gaps.

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?

Since the input schema already fully describes both parameters (to and from dates) with 100% coverage, the baseline is 3. The description does not add any extra meaning beyond the schema; it focuses on the output content rather than parameter usage.

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 accesses comprehensive IPO prospectus information, with a specific verb (Access) and resource (IPO prospectuses). It also mentions key details like public offering prices and SEC links. While it doesn't explicitly distinguish from sibling tools like getIPOCalendar, the focus on prospectuses is distinct enough.

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 implies usage for investors wanting to stay informed on IPOs, but it does not explicitly state when to use this tool versus alternatives or provide any exclusions. There is no mention of sibling tools, so the guidance is only implied.

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