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

The annotations already establish read-only, idempotent, and non-destructive behavior. The description adds the informational nature of the response and the specific content returned (estimated payments, terms, eligibility notes), which is useful context beyond the structured annotations. There is no contradiction.

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 compact: the first sentence states scope, the second lists return contents, and the third adds audience and financing categories. Every sentence earns its place, with no redundancy or filler.

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?

With only two parameters, full schema descriptions, strong annotations, and an output schema present, the description gives enough context to invoke the tool correctly. It does not cover edge cases or explicit non-use scenarios, but those are minor given the simple input surface.

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 projectBudget and creditProfile are already documented. The description does not add specific parameter-level detail or explain how budget or credit profile affect the returned options, so it stays at the baseline for a fully covered 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 names the verb 'Get' and the resource 'financing options,' and it enumerates the outputs: loan types, estimated monthly payments, typical terms, and eligibility notes. It does not explicitly contrast with sibling tools, but the financing-specific scope is distinct from nearby tools like get_estimate or get_project_roi.

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 clear context for when to use this tool: a Seattle remodeling project where a homeowner needs to understand how to pay for the remodel. It lists relevant financing vehicles (HELOC, home improvement loans, cash-out refinance, contractor payment plans), though it does not state exclusions or directly name alternative tools.

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