pennylane_list_subscription_lines

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint, so the safety profile is covered externally. The description adds no behavioral context beyond the name — nothing about pagination semantics, scoping to a subscription, or expected contents. It does not contradict the annotations, but it contributes nothing extra.

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 short sentence with no waste and a front-loaded purpose, but brevity here comes from under-specification rather than efficiency. It is appropriately sized for what it says, but it says little.

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?

An output schema exists, so return values need not be described, and annotations carry the safety profile. For a filtered list tool among many near-named siblings, however, the description leaves the agent without any when-to-use or scoping context, which is a modest gap rather than a fatal one.

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 all three parameters (subscription_id, limit, cursor) are documented in the schema itself. The description adds no meaning beyond 'billing lines of a subscription', which is the baseline 3 case where the schema does the heavy lifting.

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 clear verb and resource: listing the billing lines of a subscription. An agent can understand the operation without opening the schema. However, it does not differentiate from close siblings like pennylane_list_billing_subscriptions or pennylane_list_subscription_sections, so sibling disambiguation is left to the name.

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 when-to-use guidance, no prerequisites, and no named alternatives. In a toolset with many list_*_lines siblings, the absence of any routing hint is a real gap.

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