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

No annotations are provided, so the description carries the behavioral burden. It discloses useful traits: the data source (SEC EDGAR), that each row links to its filing, the reply opens with a one-line answer and date, and that the data is free under CC BY 4.0. It stops short of stating read-only safety or auth/rate-limit details, but the retrieval nature is clear.

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 front-loaded with the core question and is brief. However, some fragments ('IPO Watch', 'SEC Form S-1 · companies registering to go public') partially repeat the first sentence's meaning, so it is not perfectly waste-free.

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 read-only lookup with one optional parameter and no output schema, the description provides enough context: scope, source, cadence, row-link behavior, and licensing. Nothing essential for correct invocation appears missing.

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 schema has 100% description coverage for the single limit parameter, including default, ceiling, response metadata, and a more link. The tool description adds no additional meaning about that parameter, so the baseline 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 states a specific question the tool answers ('Which companies filed to go public this week?') and identifies the underlying source and filing type (SEC Form S-1, SEC EDGAR). This clearly distinguishes it from generic corporate or financial siblings like get_annual_meetings or get_mergers without requiring the reader to open the schema.

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 gives clear context for when to use the tool by framing it as the answer to a specific IPO-filing question. It does not name explicit alternatives or when-not-to-use conditions, but the intended usage is unambiguous for an agent.

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