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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety is covered. The description adds genuine value by noting results include scope lines and state their match basis, but says nothing about pagination behavior despite a page parameter, nor about result volume or ranking.

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 short sentences, zero waste, front-loaded with the core action. The second sentence about match basis is compact and genuinely informative.

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 4-parameter search with 0% schema descriptions, no output schema, and a sibling tool, the description is too thin: it never explains body, country, page, or how results are paged, leaving multiple call-shaping decisions unresolvable.

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 0% across 4 parameters, so the description carries full burden but only covers 'standard' ('for a standard'). The body, page, and country parameters—including how body differs from standard—are entirely undocumented anywhere.

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?

Names a specific verb+resource (find accredited labs) plus the secondary return (matching scope lines) scoped to a standard. It does not explicitly distinguish itself from the sibling verify_lab, so differentiation is left implicit.

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?

No when-to-use or when-not guidance; the sibling verify_lab is never mentioned, so an agent must infer that search is for discovery and verify for confirmation. The only hint is the phrase 'for a standard', which implies the required scope but not the choice of tool.

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