Precio para ganar el catálogo

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

readOnlyHint=true already tells the agent this is a safe read, lowering the burden. The description usefully adds what the response conceptually contains (buy box status, target price), but says nothing about auth/account selection behavior or that 'cuenta' may be needed when multiple accounts are connected.

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 compact sentence that front-loads the applicable scope ('publicaciones de catálogo') before the returned value. Efficient, though quite terse for a tool whose required parameter is undocumented.

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 2-parameter read-only query with no output schema, the description adequately conveys the return semantics (buy box status + required price). Missing detail is mostly about the item_id parameter and multi-account context rather than the tool's core purpose.

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 50%: 'item_id' has no description at all, and the tool description never explains what a valid catalog item_id looks like. The description does not compensate for the gap, and the 'cuenta' hint lives only in the schema, not the prose.

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 resource (catalog listings / buy box) and precisely what the tool reports: whether you're winning the buy box and the price needed to win it. It is distinguishable from siblings like ml_publicacion or ml_promociones, though it never names them.

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 Spanish phrasing 'Para publicaciones de catálogo' implicitly scopes usage to catalog listings, so an agent can infer when it applies. However, there is no explicit when-to-use/when-not, no prerequisite (e.g. valid item_id must be a catalog item), and no named alternative.

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