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

The description adds meaningful behavioral context beyond the readOnlyHint annotation: it reiterates that the operation is read-only, clarifies that it does not judge the claim's merits, and states that it files nothing. It also discloses the output includes legal caveats, going beyond what annotations alone imply. 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 three sentences, each carrying substantive information: core purpose, output scope, and usage boundaries. It is front-loaded with the main verb and resource, with no wasted words.

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 an output schema present, the description doesn't need to detail return values. It nonetheless outlines the major output categories (recipient, documents, process, caveats) and behavioral limits. This is complete for a tool of this complexity.

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% for both parameters. The description only mentions the URL ('for this URL') and implicitly acknowledges the 'what' parameter by saying it is 'echoed into the plan, not judged.' This adds minimal value beyond the schema, so a baseline score of 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's function: assess how a takedown for a URL would proceed. It enumerates specific outputs (where notice goes, documents, process, legal caveats) and distinguishes itself from siblings by noting it files nothing and defers to resolve_host for hosting-only questions.

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 explicitly provides when-to-use guidance ('Assess how a takedown for this URL would proceed') and when-not-to-use guidance ('does not judge the merits... files nothing'). It also names an alternative: 'Use resolve_host first if you only need the hosting answer.' This fully meets the criteria.

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