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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), so the bar is lower. The description adds real context beyond them: the call requires the manage_token that save_search_alert issued, meaning access is capability-gated by a prior write call. It does not discuss error behavior when the token is stale, which would have pushed this higher.

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 sentences, zero filler: the usage trigger comes first, followed by the concrete information the call yields and the required inputs. Every clause earns its place and nothing is repeated verbatim.

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?

There is no output schema, and the description compensates by enumerating the alert attributes the agent will learn, plus where the credentials come from. For a two-parameter read-only tool this is nearly complete; only edge behavior when the token or alert no longer exists is unaddressed.

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 properties are documented there, including the same provenance note ('save_search_alert gave'). The description's restatement of the two required parameters adds no syntax, format, or constraint detail beyond the schema, so the baseline 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 enumerates exactly what the tool reports about a saved alert (pending confirmation, active/ended, what it watches, last sent, end date), which makes the read operation on the search-alert resource unambiguous and separable from save_search_alert and cancel_search_alert. It stops short of an explicit 'retrieves/reads' verb, relying on the title and field enumeration to convey the action.

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 a concrete trigger: 'Use this when a buyer asks about an alert for new works they saved.' It does not state when-not to use it or name alternatives (e.g. cancel_search_alert for changing state), so the agent must infer the boundaries from sibling names.

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