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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds valuable non-schema behavior: pricing is $0.002 in USDC per successful call via x402, and failed calls are not charged. It does not discuss rate limits or permission requirements beyond payment.

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 search purpose is front-loaded, and the pricing note is separated cleanly. The first sentence is dense with returned-field details, but every field listed is useful for deciding whether to invoke the tool.

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 presence of an output schema and rich parameter descriptions, the description supplies enough context to call the tool correctly, including the pricing model. It could be slightly stronger by clarifying how this differs from the related SEC investment adviser sibling 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?

Schema description coverage is 100%, so all three parameters are already documented in the schema. The description only reiterates that searching is by firm name and does not add meaning for page or limit beyond what the schema provides. Baseline 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 a specific verb and resource: search the SEC IAPD database by firm name. It also summarizes the returned fields and total match count, making the tool's scope obvious. However, it does not explicitly distinguish this from the close sibling finance_sec_investment_adviser.

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 by saying to search by firm name and naming the required input, but it gives no explicit when-to-use or when-not-to-use guidance. It also does not point agents to finance_sec_investment_adviser or any alternative for related adviser data.

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