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

Annotations already cover readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the description does not need to restate safety. The description adds the one-award scope and the field list, which is useful, but it does not disclose response shape, error behavior, or any other operational details. This matches the lower bar set by the annotations.

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?

A single, information-dense sentence that front-loads the action and resource, then lists all relevant output fields with no filler. Every part of the sentence earns its place.

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 one-parameter, read-only lookup tool, the description is complete: it gives the input source, the scope, and the expected content of the response. With rich annotations and no output schema, this level of detail is sufficient for an agent to select and invoke the tool correctly.

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 coverage is 100%, and the schema already describes award_id as 'Generated award id from spending_search_awards.' The description repeats that same provenance rather than adding new meaning, so it adds no value beyond the schema for parameter understanding.

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 verb and resource: 'Get full detail for one federal award by its award id.' It enumerates the exact information returned (recipient, amount, type, agencies, period, NAICS/PSC, place of performance, description), and the explicit link to spending_search_awards distinguishes it from the search/summary siblings.

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 clearly conveys the intended workflow: first use spending_search_awards to get a generated award_id, then call this tool with that id for full details. It does not explicitly name alternatives such as spending_recipient_summary or state when not to use this tool, but the context strongly implies the correct usage.

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