parlayapi_checkout_link

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

With no annotations, the description carries the full behavioral disclosure burden. It states the tiers and monthly subscription nature, but does not disclose important side effects or constraints, such as whether this creates a Stripe session, whether it charges immediately, whether the URL expires, or what happens after the user clicks it.

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 compact, front-loaded with the main action, and uses a clear list for tiers and pricing. Every line provides useful information with no unnecessary prose.

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?

The description is adequate for a simple 2-parameter checkout-link tool and the presence of an output schema covers return value expectations. However, with no annotations and no description of email semantics or the payment flow, the agent must fill in important gaps before invoking it confidently.

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 compensate. It meaningfully documents the tier parameter with valid values and prices, but the email parameter is never explained beyond what the schema already shows. The tier documentation helps significantly, but the email gap prevents a higher score.

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 identifies the action ('Generate a Stripe Checkout URL') and the resource/context (user upgrade), so an agent can tell this tool is for creating checkout links. It does not explicitly distinguish it from sibling tools like parlayapi_get_pricing or parlayapi_signup, so it stops short of a 5.

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?

The description implies when to use the tool: when a user needs a clickable URL to upgrade. However, it gives no explicit guidance about when not to use it, such as using get_pricing for pricing questions or signup for initial account creation.

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