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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so safety is covered. The description adds value beyond them: the required read_orders scope and the fact that date filters are interpreted in the store's own time zone, plus the concrete endpoint GET /api/3.0/orders.json.

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?

Three short sentences, front-loaded with purpose, then filters, then permission and endpoint. Nothing is redundant or padding; each clause carries information.

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 14-optional-parameter list tool with no output schema and full schema coverage, the description covers purpose, filters, auth scope and endpoint. It omits pagination guidance (page/limit/next_page behavior) and any hint at result size or ordering defaults, which would help an agent drive multi-page retrieval.

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%, with every one of the 14 parameters documented including enum values and date formats, so the baseline is 3. The description's filter summary and time-zone note largely restate what the schema already says per-parameter and add no format or precedence detail.

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?

Opens with a specific verb and resource ('List orders') and enumerates the payload fields returned (customer, items, totals, payment, fulfillment status) plus the cross-channel scope. It is clear on its own, but it never names the sibling easystore_get_order as the single-order alternative, so the boundary is inferred rather than stated.

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?

Explicitly lists the filter dimensions (payment/fulfillment status, customer, dates) and states the prerequisite 'Needs read_orders', which is real routing context an agent needs before calling. It stops short of exclusions such as 'for a single order use get_order' or how this differs from easystore_list_order_transactions / easystore_list_checkouts.

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