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

The readOnlyHint annotation already establishes the safety profile, and the description reinforces it with 'Read' and a GET endpoint. It also indicates pagination via 'one page', but adds no details about auth, rate limits, or return behavior beyond what the annotation and schema provide.

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 no filler, and the core action is front-loaded before the endpoint. Every sentence contributes directly to identifying the operation.

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 7-parameter read tool with full schema descriptions and a readOnly annotation, the definition is minimally adequate. However, it leaves the return content and pagination behavior mostly to inference and does not compensate for the absence of an output schema.

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 every parameter is already documented in the input schema. The description's endpoint mentions the required id in path form but adds no filtering, pagination, or field-selection semantics beyond the schema.

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 a read operation and includes the concrete endpoint GET /v1/orders/{id}/lineitems, which identifies the resource as an order's line items. The title and endpoint make it distinguishable from sibling order-related list tools, though the prose itself is terse and relies on the endpoint to carry the resource specificity.

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?

It says to read one page but gives no explicit when-to-use guidance, prerequisites, or alternatives such as get_order or list_orders. The schema notes that id comes from a preceding read, but the description itself does not guide tool selection.

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