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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds useful plan-gating context ("Starter+ plan"), but it says nothing about the 34 optional filters or how they affect the listing behavior.

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 two sentences and front-loaded with the core listing action. The plan note is relevant and earns its place, though the extreme brevity leaves critical parameter context absent.

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?

Although an output schema exists, this is a 34-parameter filtering tool and the description explains none of the filter dimensions. It gives only purpose and plan eligibility, leaving the agent unable to construct a meaningful filtered query.

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 input schema has 34 parameters with 0% description coverage, and the description provides no parameter semantics at all. With no compensation from the description, an agent cannot know what name, scope, metric, threshold, date_from, or the other filters mean.

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 verb and resource — listing Search Console / AI-referral alert rules — which distinguishes it from the generic alert-rule siblings like automate_list_alert_rules. It is clear, though it does not explicitly name the sibling alternatives it replaces.

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?

The only usage-related information is "Starter+ plan," which is an eligibility constraint rather than guidance on when to choose this tool over automate_list_alert_rules or automate_list_automation_rules. No when-to-use or when-not-to-use conditions are given.

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