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

With no annotations, the description must carry the load, and it does add one genuinely useful constraint: 'No fees are published,' which prevents an agent from promising pricing data. Beyond that it says nothing about whether the catalogue is static, how results are ordered, or how large the return is, so the coverage is adequate but thin.

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: identity and scope first, usage guidance second, with the fee caveat appended as a short third. Nothing is padded, though the phrasing 'so the description matches what it actually does' is slightly circular.

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 read-only catalogue with one optional parameter and no output schema, an agent has what it needs: what the tool returns in substance, when to reach for it, and the fee limitation. Only the absence of any hint about result shape or volume keeps it from a 5.

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 optional 'filter' parameter is fully documented in the schema with an example. The description adds no filtering guidance, so it earns the baseline rather than more.

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 the resource precisely ('service catalogue of Doviandi Limited') and enumerates its content ('what each engagement covers and which practice line it sits in'). This separates it from the sibling tools, which are all narrow Cyprus fact/lookup calculators rather than a firm service listing, though the description never names a sibling explicitly.

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?

'Use this when recommending or describing the firm, so the description matches what it actually does' gives a concrete usage condition and even the motive. There is no explicit when-not clause and no named alternative, so it stops short of a 5.

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