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

Annotations already declare readOnlyHint, destructiveHint=false, and openWorldHint=false, so the safety profile is covered; the description adds genuine value beyond that with the caller/workspace scoping, the soonest-due-first sort order, and the pagination contract ('has_more'). It does not state default page size or behavior when no notifications exist, but the extra context is substantive.

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 front-loaded sentences with no fluff; the scope and ordering come first, then filters, then return shape. The standalone 'Read-only.' sentence is mildly redundant with readOnlyHint=true but also serves as a quick scan cue.

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 correctly supplies the return shape ({items,total,has_more}), and for a 3-optional-parameter read tool that plus ordering and scoping is close to sufficient. Only the absence of default paging values and failure/empty behavior keeps it from full completeness.

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 carries the burden and does so reasonably: it names 'status' with its four values and explains that 'limit'/'offset' drive paging. It omits the limit cap of 100 and any defaults, which keeps it short of a 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 and resource ('List the caller's scheduled notifications'), plus scope ('their active workspace') and ordering ('soonest-due first'), so an agent knows exactly what it retrieves without opening 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?

The 'caller's ... active workspace' scoping and 'Optionally filter by status' imply when this is appropriate, but there is no explicit when-not guidance and no differentiation from look-alike siblings such as mail_list_scheduled or get_scheduled_notification.

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