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

With no annotations, the description carries the full behavioral burden. It helpfully discloses the credit cost ('5 point per returned record'), which is real operational context, but omits whether a domain must match the identifier, error/not-found behavior, and whether profiles are rate-limited or public-only.

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?

A single front-loaded sentence plus a short cost note; every clause earns its place with no preamble or filler. Slightly dense but well-structured.

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 and no annotations, so the description's field enumeration is genuinely useful, but it is thin for a lookup tool spanning seven marketplaces: no return shape, no handling of ambiguous or invalid identifiers, and no note on cross-domain behavior.

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 100%, so both parameters are already fully documented, including the domain enum and its default. The description only restates the accepted identifier formats and says nothing about the domain parameter, so it adds little beyond the schema. Baseline 3 applies.

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?

The description states a specific verb+resource ('Get an OLX seller profile') and enumerates the returned data (account type, registration, last seen, response time, business details), which makes it easy to recognize. It does not, however, distinguish itself from the sibling run_olx_users_offers or explain how it differs from seller-lookup tools on other marketplaces.

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?

There is no explicit when-to-use guidance, no prerequisites, and no mention of the natural alternative (run_olx_users_offers) for retrieving a seller's listings. Usage is only implied by the accepted identifier types.

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