create_checkout

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

No annotations are provided, so the description must disclose behavioral traits. It only states creation but does not mention side effects (e.g., billing charges), required authorization, or any destructive or read-only behaviors. This is insufficient for a payment-related tool.

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?

Two sentences, no wasted words. The verb and resource are front-loaded. Every sentence serves a purpose: stating what it does and listing the product options.

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 lacks essential context: it does not specify that the tool returns a URL, nor does it explain how the success_url and cancel_url parameters work. Given no output schema, the description should clarify the return value. This is a significant gap for a tool that produces a checkout link.

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 input schema has 100% coverage with descriptions for all 6 parameters. The description adds only a redundant list of products already in the enum. It does not provide additional meaning beyond the schema, earning a baseline 3.

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 it creates a Stripe checkout URL for an organization, specifying the verb ('Create'), resource ('Stripe checkout URL'), and scope ('for an organization'). It uniquely distinguishes from sibling tools as no other tool creates checkouts.

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 usage context by listing the available products (balance_topup, tier, email_pack). While it doesn't explicitly state when to use alternatives, no sibling tool overlaps with checkout creation, so the context is clear.

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