get_payment_link

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

With no annotations provided, the description carries the full burden. It does disclose the conditional nature ('if configured'), but does not specify what happens when not configured (e.g., returns null, empty, or errors). No auth, rate limits, or other behavioral context is provided.

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 sentence that conveys all essential information without redundancy. It is front-loaded and every word contributes to the meaning.

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 one-parameter tool with no annotations or output schema, the description is too sparse. It lacks edge-case behavior (e.g., unconfigured products), parameter semantics, and any additional context an agent would need to invoke the tool reliably.

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?

The schema has one parameter (product_id) with 0% description coverage. The tool description merely says 'for a product' but does not clarify whether product_id is a Stripe ID, internal ID, or its expected format. It fails to compensate for the schema's lack of documentation.

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 clearly states the action ('Return'), the resource ('known Stripe payment link URL for a product'), and the condition ('if configured'). It distinguishes itself from sibling tools like get_product and list_live_products by focusing specifically on the 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?

Usage is implied: use this tool when you need the Stripe payment link for a product. However, there is no explicit guidance on when not to use it or mention of alternatives, such as get_product for product details.

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