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

Annotations already declare readOnly, idempotent, non-destructive, and closed-world, so the safety profile is fully covered. The description adds useful context by naming the fields returned (source, latest period, alert status), but says nothing about ordering, total counts, or behavior on an empty watchlist.

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, front-loaded with what is returned, followed by the operational note. No filler; every clause earns its place.

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 two-parameter read-only list with no output schema, the description covers the payload fields and pagination, which is what an agent needs. Minor gaps remain on ordering and result shape, but nothing misleading is present.

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 both parameters already document defaults and bounds, so the schema carries the semantics. 'Paginate with limit/offset' merely restates the schema without adding format or ordering detail.

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 the specific resource ('Datasets the user follows (watchlist)') and even names the returned fields (source, latest period, alert status), which is more specific than the tool name. It does not explicitly contrast itself with add_to_watchlist/remove_from_watchlist, but the 'list' framing makes the distinction obvious.

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 by the read-style wording; there is no statement of when to call this versus search_catalog/search_datasets or the watchlist mutation siblings. The pagination hint ('Paginate with limit/offset') is operational guidance, not selection guidance.

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