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

Annotations already declare readOnly, openWorld, idempotent, and non-destructive behaviorholisticly, so the description only needs to add extra context. It adds useful behavioral details: newest-first ordering, optional district narrowing, and no API key/rate limit requirements. It does not mention pagination or output fields, but the annotation coverage keeps this from being a significant gap.

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?

Two brief sentences convey the core behavior, ordering, filterability, and operational constraints without any filler. The most decision-relevant information is front-loaded in the first sentence.

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 list tool with three optional parameters and no output schema, the description plus annotations cover the essential invocation details: what is listed, ordering, district filtering, and lack of auth/rate limits. The main omissions are the default recency window and the exact result shape, but these are not blocking for correct use.

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% for all three optional parameters, so the description need not repeat them. It echoes the court concept by saying 'optionally limited to one district,' but adds no new semantic detail beyond what the schema already 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 the tool lists recent US federal civil lawsuits in newest-first order and can be limited to one district. This distinguishes it from the sibling federal_civil_search on a basic level, but it does not explicitly name that alternative or draw a contrast with it.

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 no guidance on when to prefer this tool over alternatives such as federal_civil_search-flexmls, nor does it state which use cases are better served elsewhere. 'No API key, no rate limit' is a helpful operational note, but it is not usage guidance.

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