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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint, and destructiveHint=false, so the safety profile is covered. The description adds only a vague scope statement and says nothing about return order, pagination, whether inactive webhooks are included, or the relationship to other webhook tools.

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 description is brief and contains no filler, but it is a noun-phrase fragment rather than a front-loaded statement of the action. It is concise without being clear about what the tool actually does.

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 simple parameterless list tool with annotations and no output schema, the description still omits the core fact that it returns a list of webhooks and does not clarify how it relates to webhooks_get or webhooks_failures. An agent can guess, but the description does not complete the picture.

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 has zero parameters, so there is no parameter semantics for the description to compensate for. The baseline for a parameterless tool 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 names the resource ('Webhooks') and adds account scope ('this account's updates'), but it does not explicitly say 'list' or otherwise distinguish the tool from siblings such as webhooks_get and webhooks_failures. The agent must rely on the tool name and title to infer 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?

There is no guidance on when to use this tool instead of webhooks_get, webhooks_failures, create_webhook, or webhooks_update. The description provides context about what webhooks are, but not when this listing operation is appropriate.

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