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

Annotations already declare read-only, idempotent, non-destructive and closed-world, and the description adds real context beyond them: the registry breadth, that a single request may cover sibling sites via the parent company, and the possible method values (form, email, both, guide, none). It omits failure behavior for a site not in the registry.

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?

One dense sentence with the scope ('950+ sites in the takedown registry') front-loaded, followed by the return payload inventory. Slightly list-heavy but every enumerated item is information the caller would otherwise have to query.

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 no output schema, the description correctly carries the return-value burden by naming every field returned, which is what an agent needs. The main gap is what happens when the site is absent from the registry (empty result vs. error).

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 single parameter already documents domain-or-URL with an example; the description's 'Accepts a domain or a URL' merely restates it. No added syntax, normalization, or matching rules.

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?

States a precise verb and resource and enumerates the exact record contents (method, opt-out URL, privacy email, parent company, sibling sites, guide link) so an agent knows what comes back. It does not explicitly name how it differs from nearby siblings like get_opt_out_instructions or list_opt_out_guides, so the distinction must be inferred from 'link to our step-by-step guide'.

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?

Usage is only implied: it is clear this is the lookup for a single site's removal route, and 'Accepts a domain or a URL' plus the 950+ site scope give context. There is no statement of when to prefer this over get_opt_out_instructions or list_opt_out_guides, and no exclusions.

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