Quote Automatic SSL renewal

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

Annotations only flag idempotency and non-destructiveness; the description adds real behavior beyond that: 'without charging', the required paid operations / certificates:order scope / spend caps, and the fact that the quote is bound to the exact DNS-name set, renewal date, offer generation and VAT-inclusive total. That is precisely the non-obvious context an agent needs.

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 sentences, front-loaded with the scope and the 30-day window, with no filler. The second sentence is a dense comma-list of prerequisites, which is information-rich but slightly heavier reading than ideal.

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?

With no output schema, the description takes on the return-value burden and does so well, enumerating what the quote is bound to (DNS-name set, renewal date, offer generation, VAT-inclusive EUR total). Combined with the prerequisites, an agent has everything needed to call and then confirm.

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 already 100%, so the baseline is 3, but the description adds genuine meaning by explaining that the idempotencyKey is client-global and reused verbatim for the confirmation call, and by confirming the subscription id refers to a customer-owned subscription. It adds the cross-call semantics the schema alone does not convey.

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 verb (Quote) plus the precise resource and scope ('next term of an owned renewable Automatic SSL subscription'), which cleanly separates it from quote_automatic_ssl_subscription and quote_automatic_ssl_domain. An agent can distinguish it from its siblings without opening any schema.

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?

Gives a clear precondition and window: the subscription must be owned, renewable, and inside its final 30 days, and it notes the idempotencyKey is reused for confirmation, implying the quote->order_automatic_ssl_renewal workflow. It does not explicitly name a sibling alternative or a when-not-to-use case, so it stops just short of a 5.

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