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

readOnlyHint=true already covers the safety profile, and the description adds the underlying Admin API route (GET /v1/admin/customers/{customerId}/orders). It does not disclose pagination, ordering, or result limits, which matter for a list endpoint.

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 short sentences with the purpose front-loaded and the endpoint reference trailing as secondary detail. Nothing is redundant.

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 one-parameter read-only list tool with full schema coverage and a safety annotation, the description is close to sufficient. The remaining gap is pagination/result-size behavior, which the description leaves to the API route rather than stating directly.

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% for the single customer_id parameter, so the schema carries the load. The description adds no format hints (e.g. UUID vs. legacy id) beyond restating that it targets one customer.

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?

States a specific verb and resource ('List the orders') scoped to 'one customer', which implicitly separates it from the sibling twicecommerce_list_orders and twicecommerce_get_order. It stops short of naming the alternatives explicitly, so it is clear but not fully differentiated.

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?

Usage is only implied by the phrase 'of one customer' — an agent can infer this is the per-customer variant, but there is no explicit when-to-use, when-not-to-use, or named alternative such as list_orders for cross-customer queries.

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