Order Automatic SSL domain

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

Goes beyond the annotations (which only flag destructive/idempotent/non-read-only) by disclosing the required scope certificates:order and that paid-operation spend controls apply. The emphasis on reusing the same idempotencyKey adds real dedup behavior. Missing detail on what happens post-charge, but the added context is substantial.

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?

Four short sentences, front-loaded with the action, then precondition, then input discipline, then authorization. No filler; every sentence carries an actionable instruction.

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 paid, destructive, idempotent mutation with full schema coverage and no output schema, the description covers the action, the approval gate, the credential/spend requirements, and the idempotency contract. Nothing an agent needs before calling is missing.

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 100%, so the baseline is 3; the description earns above that by tying the parameters to the quote flow ('unchanged name, same idempotencyKey, exact quote token'), which explains why each must match rather than just what it is.

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 (confirm and pay / order) and resource (additional Automatic SSL DNS-name), and clearly marks it as the terminal ordering step rather than the quote step. An agent can distinguish it from sibling quote_automatic_ssl_domain and order_automatic_ssl_subscription 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 an explicit precondition ('Call only after the user approves the final EUR total, DNS name, and payment method') and the correct input-reuse discipline (unchanged name, same idempotencyKey, exact quote token). It doesn't explicitly name the quote tool as the alternative it must follow, but the when-to-use is clear.

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