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

Annotations already declare readOnlyHint=false and destructiveHint=false (a non-destructive write/request). The description adds genuinely useful behavior: nothing is signed or paid, owner confirmation is required in a trusted wallet, no wallet means it cannot complete, and where status lives (webaz_approval_requests). What it lacks is the return shape or what happens on duplicate requests, keeping it at a 3-4 range; the annotation context plus this detail supports a 3.

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 key constraint ('Request-only') is front-loaded and the sentences are dense with useful facts. Some phrasing ('Status: webaz_approval_requests; an unknown or execution-only record is not paid...') is compressed awkwardly, slightly reducing readability.

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?

No output schema exists, and the description compensates by naming the status record (webaz_approval_requests) and the failure/recovery path. It still does not state what the call returns or how the agent learns of approval, leaving a small gap for a state-changing request tool.

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 0%, so the description must carry the load, and it does define both params' roles: order_id for a single existing order and group_id for one request per checkout group. It still doesn't say whether both may be supplied together or which takes precedence, so it falls short of 5.

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 (asks the owner to approve paying) plus the exact resource (an existing order_id or group_id) and immediately distinguishes itself from a real payment: 'It does not sign or pay.' An agent can separate this from webaz_pay_order without opening either schema.

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?

Makes the usage context explicit: use when you want the owner to approve an existing order, one request per checkout group, and it cannot complete without the owner's trusted wallet + Passkey. It doesn't name a sibling alternative (e.g., webaz_pay_order or webaz_buyer_action_request) as a direct comparison, which keeps it below a 5.

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