Get paid TLS certificate product

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

Annotations already declare readOnly/idempotent/non-destructive/closed-world, so safety is covered. The description adds value beyond them by stating the auth scope ('Requires certificates:read') and by characterizing the payload as final EUR pricing plus customer-visible capabilities, which signals the pricing is authoritative and that some fields are filtered from the customer view.

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?

Three short sentences, front-loaded with the operation and its return content, with the precondition last. Everything earns its place, though 'with final EUR offers and customer-visible capabilities' is slightly dense phrasing.

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 usefully covers what comes back (offers, capabilities) and the required permission scope. The dependency on list_certificate_catalog for obtaining product_id is only in the schema, not the description, but overall an agent has enough to invoke it correctly.

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 there is a single required product_id, so the schema already carries the semantics; baseline is 3. The description's reference to 'offer ID and generation from this response' does not map cleanly onto the product_id parameter, adding mild ambiguity rather than clarifying it.

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 and resource ('Read one published paid TLS product'), and immediately scopes what it returns: final EUR offers and customer-visible capabilities. This clearly separates it from the sibling list_certificate_catalog (which enumerates products) and get_certificate (which reads an issued certificate).

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 concrete downstream instruction: use the exact offer ID and generation from this response when quoting. That tells the agent this is a pre-ordering lookup step. It stops short of explicitly naming quote_certificate/order_certificate as the follow-on tools or stating a when-not condition.

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