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

With no annotations the description carries the full behavioral burden, and it does add real value by enumerating the possible states (pending or paid). However, it says nothing about auth requirements, error behavior for an unknown or malformed order_id, or latency/rate limits, so significant behavioral gaps remain.

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?

One sentence, front-loaded with the resource and the returned values, with no filler. Every clause earns its place.

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 one-parameter getter with no output schema and no annotations, the description covers the essential purpose and the set of possible results, which is most of what an agent needs. It stops short of describing failure modes or auth, leaving a modest but real gap.

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 single parameter has 0% schema description coverage, so the schema only says it is a required integer. The description compensates partially by explaining that order_id refers to an order produced by buy_pack, which gives the agent a source for the value, but format and validity constraints are still absent.

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?

Names the resource (an order) and the exact information returned (its status), and ties it to the originating sibling tool buy_pack, so an agent can position it next to buy_pack rather than the auth/email/blocklist siblings. It is a noun phrase rather than a verb, but for a simple getter the intent is unambiguous.

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 phrase 'from buy_pack' implies the usage context (checking on an order you created), but there is no explicit when-to-use, no statement of prerequisites, and no alternative named. Usage is only implied.

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