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

Annotations already declare readOnly, idempotent, non-destructive, closed-world, so the safety profile is covered. The description adds genuine behavioral detail beyond that: newest-first ordering, the content of each item ('the product and the figures behind it'), and cursor-based pagination capped at 50 per page. It stops short of noting whether the unread state changes on read or how long a cursor stays valid.

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 dense sentences with no redundancy: the return content is front-loaded, filter behavior second, pagination last. Every clause carries information an agent needs.

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?

With no output schema, the description appropriately describes what each item contains (product plus underlying figures), which is the key return-value information. Minor gaps remain around whether an empty page or exhausted cursor is signalled and what the default page size is, but the tool is simple enough that little is missing.

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 supply meaning. It explains `unreadOnly` ('keeps the unread ones') and conveys the cursor/50-per-page cap that maps to `cursor` and `limit`, but it never names `limit` or states its default, and gives no hint about cursor acquisition from a prior page.

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 ('Lists the account notifications') plus ordering ('newest first'), then enumerates the exact event types returned (undercut, buy box won, price drop, price rise, first collection, action needed). That enumeration distinguishes it from the sibling list_alerts and from mark_notifications_read without needing the 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?

Usage is only implied: an agent can infer it should call this when it needs to see notifications, and `unreadOnly` signals the 'show only new' case. There is no explicit when-to-use vs. list_alerts guidance, no note about the mark_notifications_read follow-up, and no mention of prerequisites.

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