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

The annotations already cover readOnly, idempotent, and non-destructive hints. The description adds valuable behavioral context beyond those: 'newest first', 'No API key, no rate limit', and optional district scoping. It does not define the default time window for 'recent' or describe return/pagination, but the added auth and rate-limit disclosures are meaningful extra context.

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 tight and front-loaded. The first sentence covers the core action, ordering, and optional scope; the second adds practical guarantees and use cases. Every word contributes to the agent's decision.

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 3-parameter read-only tool with no output schema, the description gives clear use cases, scoping, and operational guarantees. It does not define the default 'recency' window or explicitly state that it returns dockets, but the parameter description and the word 'dockets' already make the output type inferable. Slightly more detail on the default time window would make it comfortably complete.

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?

All three parameters are fully described in the schema (100% coverage), so the description need not re-explain them. The description only mentions 'optionally limited to one district,' which is redundant with the `court` parameter docs. It adds no deeper semantic insight 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 clearly states what the tool does: it lists recent US federal criminal prosecutions, with newest-first and an optional district filter. It identifies the resource and verb clearly, but it does not explicitly name or distinguish itself from the sibling `federal_criminal_search`, so the differentiation is implied rather than stated.

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?

It provides strong use-case guidance: 'Use for what recent federal charges were filed recently or to watch one district court.' It also notes 'No API key, no rate limit,' which helps an agent select it over restricted tools. However, it does not explicitly mention when not to use it or point to `federal_criminal_search` as the alternative, leaving the comparative guidance incomplete.

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