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

Annotations already declare read-only/idempotent/non-destructive/open-world, so the safety profile is covered. The description adds genuinely non-redundant behavior: login is required, the call is expensive, it is capped at 100 items, and there is no pagination — the last two materially affect how an agent must plan calls.

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?

Dense but front-loaded: the login requirement and the resource lead, then related tools, then the cost/limit caveat. No clause is padding, though the single run-on sentence with semicolon-chained clauses makes it slightly harder to scan than a split structure would be.

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 carries the return-shape burden and does so partially by stating that items.id is the deliveryId and that per-organization switches are included. Auth requirement, volume cap, and absence of pagination are all disclosed — sufficient for correct invocation.

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% and the single unreadOnly flag is fully documented in the schema ("true=只要未读。缺省 false"). The description never mentions unreadOnly or adds filtering semantics beyond the schema, so the baseline of 3 applies.

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 names the resource precisely — the caller's own organization notifications plus per-organization switches — which separates it from the generic list_my_notifications sibling. The verb is only implied by the name ("list_..."), and it never explicitly says "this is the organization-scoped variant of list_my_notifications," so it is clear but not fully sibling-differentiating.

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 gives concrete operational guidance: review the audience item by item, and because the call is heavy, do not loop it or fold it into a daily digest. It also routes to specific follow-up tools (mark_organization_notification_read for read-marking, update_my_organization_membership to disable promotion), which is explicit when-to-use-which guidance.

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