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

Annotations already mark this as read-only, open-world, and non-destructive. The description adds useful behavioral context: results may change over time, may include third-party offers, and the tool ends by redirecting the user to the bank's own platform. This goes beyond the annotation signals without contradicting them.

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?

Three focused sentences deliver purpose, result contents, dynamic behavior, and user flow with no filler. The first sentence front-loads the main action and resource.

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 parameter set (one optional array), output schema present, and strong annotations, the description is complete: it covers what is searched, what is returned, potential variability, and the follow-up action on the bank's site.

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?

With 100% schema description coverage, the schema already documents the 'features' parameter. The description reinforces that features are used for matching and that returned accounts include features, but it does not add substantial syntax or formatting details beyond 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 opens with a specific action ('Search SecureLend's lender database') and clear resource ('personal banking accounts'), distinguishing it from sibling tools focused on credit cards, loans, or savings accounts. It also states the output includes fee structures, features, and eligibility indicators, which clarifies its function.

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?

Provides clear context that this tool is for comparing personal banking accounts based on desired features, and notes the subsequent redirect to the bank's platform. It does not explicitly name alternatives or exclusions, but the domain distinction from sibling compare tools is evident.

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