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

With no annotations supplied, the description does carry useful behavioral context: it names the credential source (OpenAny gateway) and warns that charges and authorization are gateway-determined, which is genuinely helpful for a paid third-party call. It stops short of stating read-only semantics, expected latency, or what a failed/unauthorized call looks like.

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, front-loaded with the data domain before the credential/billing caveat. No filler; each sentence carries distinct information.

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?

There is no output schema, so the description was the only place to explain what comes back (indicator series, units, frequency, geography coverage), and it says nothing about results. Combined with a nested six-field required body object, the definition is thin for what an agent needs to form a good query.

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 schema is reported at 100% description coverage, so the baseline is 3; the description adds nothing about the nested body. Notably the schema fields have empty description strings and several are effectively fixed enums (search_type=proprietary, max_price=5, response_length=short, included_sources both feeds), which the description could have surfaced but does not.

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 and resource: "Find BLS and World Bank statistics," which tells an agent exactly what data domain the tool serves. The two named sources (BLS, World Bank) also implicitly separate it from the valyu health siblings, though it never names an alternative 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?

No explicit statement of when to use this instead of a general web search or the sibling valyu health tools, and no prerequisites beyond a passing mention of gateway credentials. The only guidance is implicit in the word "statistics."

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