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

Annotations already declare read-only, idempotent, non-destructive behavior. The description adds that the tool only builds the link and does not send or complete payment, which is useful side-effect clarification, but it does not describe auth requirements, error cases, or return format.

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?

The description is a single front-loaded sentence with no filler, and the core distinction from sending is placed at the end. The parenthetical '(seliee_website_id)' is slightly confusing but does not undermine the compact structure.

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?

There is no output schema and no schema-level parameter documentation. The description covers the core operation and the purpose of the link, but the required provider parameter is undefined and return/error behavior is not described.

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 0%, so the description must carry parameter meaning. It explains the price_id/price_uuid and website_id/website_uuid alternatives and their role, but it completely omits the required provider parameter, leaving a critical gap.

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 specific resource and scope: it retrieves the checkout link for a payment price on a website domain. The clause 'this only builds it' separates the operation from sending the link, though it does not explicitly name the sibling send_payment_link.

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?

It implies the link is what the customer opens to pay and clarifies that this tool only builds rather than sends it, which gives some usage context. However, it does not explicitly say when to use this versus send_payment_link or list_payment_prices.

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