Get period options

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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description does add real value beyond annotations by disclosing the 'services:read' scope requirement for API-key calls, but says nothing about result shape, pagination, or ambiguity when an order number is unknown.

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?

Two short sentences with no filler, and the purpose is front-loaded. The missing sentence boundary between 'options' and 'Requires' makes it read as a run-on, a minor structural blemish.

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 single-parameter read tool with safety annotations, this is close to adequate, but with no output schema the description could have said what the options payload contains. The auth note is the only extra detail supplied.

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 orderNo parameter is fully documented there (pattern, length, examples). The description adds no additional parameter meaning, so the 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?

States a concrete verb and resource ('Get billing period and auto-renewal options'), which is specific enough that an agent can distinguish it from quote/renew tools. It does not, however, name or contrast itself with the closest siblings such as get_plan_options, get_order_options, or list_network_product_periods.

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 description gives no indication of when to call this versus the many adjacent option/period/quote tools, nor any prerequisites beyond a bare auth note. An agent must infer the usage context entirely from the name.

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