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

Annotations already declare readOnly, idempotent, non-destructive, closed-world behavior, so the safety profile is covered. The description adds genuinely useful context beyond them: prices shown are starting prices only and final quotes precede payment, which prevents an agent from presenting catalog numbers as binding. It does not mention caching or whether the catalog is static, but that is minor.

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 sentence delivers the verb, the resource, the returned fields, and a pricing caveat, with the scope front-loaded. No filler or restatement of the title.

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 needn't enumerate return fields, and it already names the two key ones (starting price, request page). Zero parameters and full annotation coverage keep the burden low; the only gap is that it doesn't say whether results are static or reflect live pricing.

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?

The tool takes zero parameters, so there is nothing for the description to disambiguate — baseline 4 applies. The description correctly implies a single unfiltered listing rather than a search.

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 specific verb ('List') and a well-scoped resource (MCC Solutions' notary, apostille, court-run and paperwork services) with the exact payload fields — starting prices in USD and request pages. It is clearly distinct from siblings like firm_services or career_and_student_services by naming its own service categories, though it never explicitly contrasts itself with a sibling.

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: an agent can infer this is the lookup for service pricing, but nothing states when to prefer it over search_store, site_directory, read_page, or request_service. There are no exclusions or prerequisites, so the agent must reason from the name alone.

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