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

Annotations already establish that this is a non-read-only, non-destructive, closed-world write. The description adds only the side effect (a channel notification), but says nothing about required permissions, whether rules are active on creation, or how conditional fields like webhookUrl or recipientEmail relate to the chosen channel.

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?

A single front-loaded sentence with no filler or repetition. It is efficient, though the brevity comes at the cost of the missing detail noted in other dimensions.

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 tool with a nested rule object, two enums, conditional field requirements, three required top-level params, and no output schema, the description is far too thin. It gives no guidance on valid triggers/channels or on the shape of the rule payload.

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 0% and the description documents none of the parameters. It never mentions channel, trigger, targetStage, webhookUrl, or recipientEmail, nor the conditional relationship (webhookUrl needed for webhook, recipientEmail for email) that an agent must satisfy to call this correctly.

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 gives a specific verb and resource ("Create a rule") plus the effect ("notifies a channel when matching leads arrive"), so an agent knows this is a write tool that wires up lead alerts. It does not, however, distinguish itself from close siblings like list_lead_alert_rules, delete_lead_alert_rule, or set_lead_alert_rule_status, all of which operate on the same resource.

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 when-to-use guidance, no prerequisites, and no mention of the alternative sibling tools for the same resource. The agent must infer from the name alone that this creates rather than lists, deletes, or toggles a rule.

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