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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so the safety profile is covered structurally. The description contributes useful domain context (hooks are outbound POST targets for events) but says nothing about ordering, pagination, or volume of results — relevant for a listing tool with no parameters.

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 clauses, front-loaded with the resource definition, with zero filler. The sibling-pairing clause is the only additional content and it 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?

With an output schema present and no parameters, the description needn't explain return shape or arguments. It gives adequate domain framing for a simple read tool; only result-ordering expectations are unstated, which is minor.

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?

The tool takes zero parameters, which sets the baseline at 4. The description correctly implies an unfiltered listing and adds no misleading parameter information.

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 identifies the resource precisely — REST-hook subscriptions defined as the URLs MightyAutomation POSTs events to — but never states the verb (list/retrieve); the action is only inferable from the tool name and title. It does separate the tool from create_hook and delete_hook by naming them as management counterparts.

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?

"Pair with create_hook / delete_hook to manage them" implies this is the read side of a hook lifecycle, giving implicit guidance. However, it never says when an agent should call this versus other list_* tools, nor any exclusions or prerequisites, so the routing is left to inference.

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