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

The readOnlyHint=true annotation already establishes that this is a safe read operation. The description adds scope ('All your sales') and hints at returned content ('status and what you receive'), but it does not disclose pagination, authorization behavior beyond the schema, or return structure.

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?

It is a single short sentence with no wasted words. However, it is so terse that the action is not front-loaded, leaving the agent to infer the retrieval verb.

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 simple read-only tool with one fully documented optional parameter and no output schema, the description gives basic scope and return hints. Still, 'what you receive' is vague and the description does not clarify the return shape or list behavior, which matters without an output schema.

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%, and the single optional api_key parameter is fully documented in the schema. The description adds no parameter meaning, but baseline 3 is appropriate when the schema already handles parameter semantics.

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 names the resource ('your sales') and mentions returned fields ('status and what you receive'), but it lacks a clear action verb and does not distinguish this tool from nearby siblings such as list_purchases or get_order. It is enough to infer that it retrieves sales data, but only minimally.

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 guidance on when to use get_sales versus alternatives, nor any exclusions or prerequisites. The phrase 'All your sales' weakly implies viewing all sales, but no alternatives are named.

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