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

Annotations already cover read-only, idempotent, non-destructive, and closed-world traits. The description adds substantial domain context beyond that: the claim/outcome row model, precise meanings of delivered, undelivered, and dead_letter, the auth scope (key reads its own team's and workspace-wide alerts), and pagination with an exact total.

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?

The first sentence front-loads the core purpose, and each subsequent clause conveys needed domain semantics for interpreting rows and statuses. It is dense and could be tightened, but no sentence is filler.

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 and several custom statuses, the description supplies the return structure (claim and outcome rows), the meaning of each delivery state, the auth scope, and pagination behavior. Nothing material for correct invocation or interpretation 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 100%, so the baseline is 3. The description goes beyond the schema by explaining the claim/outcome row model and defining what statuses like delivered, undelivered, and dead_letter actually mean, which enriches the status enum and event_id parameter.

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 states a specific resource and ordering: 'The delivery status of the workspace's alerts, newest first.' It clearly separates deliveries from alert events by describing claim/outcome rows and endpoint status, but it never explicitly names the sibling tool alert_events as the alternative for event-level data.

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 implied: the tool retrieves alert delivery status and supports filtering by event_id, status, or channel. However, there is no explicit statement of when to use this versus alert_events, and no when-not conditions or alternative routing are given.

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