Bulk add to Zé cart (gated)

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

Annotations already indicate a destructive, non-read-only operation. The description adds useful behavioral context beyond annotations: it is dual-gated, fail-closed on 18+ confirmation, and explicitly does not proceed to checkout. No contradiction with annotations.

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 tightly written with no fluff and front-loads the function signature. Each sentence contributes meaningful information, though the fragments could be slightly more structured.

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 tool with a nested input object, no output schema, and low schema description coverage, the description is too sparse to fully guide an agent. It does not explain what bulk_add_to_cart_input should contain, what success/failure looks like, or the precise conditions for the gates.

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 only 25%, so the description needed to explain key parameters. It alludes to dual-gating and 18+ confirmation, which helps interpret confirmed_legal_age and explicit_user_intent, but it does not clarify the required bulk_add_to_cart_input shape or the response_format behavior. This leaves major parameter semantics undocumented.

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 the action ('Bulk add to Zé cart') and reinforces it with the API call pattern. The explicit 'Does not checkout' helps differentiate it from checkout-related siblings, though it does not detail the exact input structure.

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 gating language and 'Does not checkout' imply when this tool is appropriate versus checkout tools, but it does not explicitly state when to use it instead of other cart-related tools like ze_get_cart or ze_clear_cart_items. Usage is mostly implied rather than prescribed.

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