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

Annotations already declare readOnlyHint=true, openWorldHint=false and destructiveHint=false, so safety is covered. The description adds genuinely useful behavioral context: monthly publication cadence, provenance (same bands as gccdomestic.com calculator and 2026 salary report), and per-country currency units. It stops short of saying what a response contains or how the guide-link fallback behaves.

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 tight sentences: the first front-loads what the tool returns and its two slicing dimensions, the second adds provenance and currency. Nothing is padding and the most important information leads.

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 has to carry return-value context and it partially does (benchmark bands, per-country currency, monthly cadence). It omits the shape of a band (range/low-high) and the guide-link fallback that the country param mentions, leaving a modest gap for a two-param read tool.

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%, so the baseline is 3, but the description adds meaning the schema does not carry: the currency the returned figures are denominated in per country (UAE in AED, Saudi Arabia in SAR). That is real interpretive value beyond the enum-free string params.

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 (get/published benchmarks) and resource (domestic-worker salary bands in the Gulf), with the two scoping dimensions (country, nationality) named. No sibling (get_platform_guide, search_agencies, search_knowledge, search_workers, verify_agency_licence) touches salary data, so an agent can route to this tool unambiguously.

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?

The use case is implied clearly enough by the resource described, but the description never states when to pick this tool over search_knowledge or get_platform_guide, nor does it surface the fallback path for non-UAE/KSA countries. Usage is inferable rather than guided.

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