cigchat_subscriber_cart_paid

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

With no annotations provided, the description carries the transparency burden. It discloses that the tool 'Delivers a real message to a person,' which is a critical side effect, and states the required auth scope ('Manage Flow'). This goes beyond a bare mutation description, though it does not mention reversibility or what happens to the cart contents.

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 two sentences, front-loaded with the core action, and includes the endpoint plus a critical side-effect warning. Every sentence earns its place, with no filler or repetition.

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 mutation tool with 14 parameters, no output schema, and no annotations, the description provides the essential action, side effect, and auth requirement, but omits details like whether the cart is cleared, whether an order record is created, or what the response contains. It is adequate but incomplete for full operational clarity.

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 71%, so most parameters are already described in the schema. The description adds no parameter-specific meaning, leaving the schema to handle semantics. This aligns with the baseline for high schema coverage.

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 function: 'Checkout subscriber shopping cart and mark as paid.' The verb 'checkout' and the resource 'subscriber shopping cart' are specific, and the action of marking as paid distinguishes it from sibling tools like add_to_cart, remove_from_cart, and empty_cart.

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 you need to checkout a subscriber's cart—but does not explicitly state alternatives or exclusion conditions. The prerequisite 'Requires the Manage Flow scope' gives context but does not explain when to prefer this over, for instance, shop_orders_create. The usage context is clear but not fully articulated.

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