browse_and_buy

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

No annotations are provided, so the description carries the full burden. It discloses the use of a Lithic virtual card and Playwright dependency, but does not detail behavioral traits such as potential side effects (e.g., irreversible purchases), error handling, or whether the automation is fully headless. Given the financial nature, more transparency would be beneficial.

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 extremely concise: two sentences that front-load the main action and then state the dependency. Every sentence adds value with no redundancy.

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?

Given the complexity (multi-step automation and financial transaction) and lack of output schema or annotations, the description omits details on return values, error states, or process steps. It is minimally adequate but leaves room for agent uncertainty.

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 100%, so both parameters are already documented in the input schema. The description adds minimal extra meaning beyond a note on supported site. Baseline 3 is appropriate as the schema does the heavy lifting.

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 tool's purpose: browse an online store, add items to cart, and complete purchase using a Lithic virtual card. This directly distinguishes it from sibling tools like 'get_balance', 'pay', or 'refund', which focus on account management or individual transactions.

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 mentions a prerequisite ('Requires Playwright installed') but does not explicitly state when to use this tool versus alternatives. The sibling set provides implicit context (this tool handles e-commerce, others handle payments/balances), but no direct guidance on exclusions or best scenarios.

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