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

No annotations are provided, so the description carries the full burden. It usefully discloses an edge-case behavior (empty result includes a ready-made post_request draft) and the currency domain, but omits auth/login requirements (login and prepare_login are siblings) and any rate/pagination behavior for limit up to 50.

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?

Three sentences, purpose front-loaded, no filler. The parenthetical task list (data curation, red-teaming, scraping, automations, transcription) is longer than strictly necessary but earns its place by guiding keyword choice.

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 should hint at the return shape. It covers the empty-result case but not what a matching result contains (service fields, provider identity, pricing display), which an agent needs to chain into get_service or create_order.

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 only 40%, so the description must compensate. It meaningfully covers capability (with an example query string), maxPriceUsdc, and maxDeliveryDays, but never explains category or limit, leaving two of five filters undocumented in both description and schema.

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 (Search) and resource (people who can do work on Mercadopleis) with concrete task examples and the payment rail (USDC on Base). It also names the sibling alternative (post_request), so an agent can distinguish this discovery tool from get_service/compare_services without opening any schema.

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?

Gives clear context for when to use it (filter by capability, price, delivery time) and an explicit alternative path when it fails (post_request if nothing fits). It does not cover other sibling options such as get_service for a known ID or compare_services for comparing shortlisted results.

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