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

Annotations already cover the safety profile (readOnly, non-destructive, idempotent, closed-world), and the description adds substantive context beyond them: the meaning of provider_unset, demo_workspace, sms_limits_unset and test_receiver_only, including the important note that demo workspaces deliver nothing off-channel. It stops short of stating the response envelope or ordering.

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 core answer (which channels deliver) is front-loaded, and the reason-code glossary follows in an order matching the enumeration. The reason-code enumeration is long but every entry disambiguates a value the agent would otherwise have to guess, so it earns its space.

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-value burden and does so adequately, listing channel names, the delivers flag and the possible reason strings. The only real gap is the lack of a stated relationship to alert_deliveries, which matters in a sibling set this crowded.

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?

There are zero parameters and the description confirms this with 'Takes no arguments', so no parameter-level ambiguity can exist. Baseline for a parameterless tool is a 4.

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 and enumerates the returned surface (email, sms, teams, webhook, in_app, each with a delivers flag and a reason), so an agent knows exactly what this tool answers. It does not explicitly contrast itself with the sibling alert_deliveries, so the boundary between channel configuration and delivery log is left implicit.

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 rather than stated: the 'same answer the dashboard's settings page shows' framing and 'takes no arguments' tell the agent this is a static workspace configuration lookup. There is no explicit when-to-use or when-not-to-use guidance, and no mention of alert_deliveries as the alternative for per-delivery history.

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