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

Annotations already declare non-read-only, idempotent, non-destructive, closed-world behavior. The description adds useful context about authorization requirements and retry semantics, though it does not detail side effects or response contents.

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?

Three short sentences, front-loaded with the action and resource, then prerequisite, then retry rule. No redundant text; each sentence adds operational information.

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 one-parameter provisioning tool with annotations and no output schema, the description covers purpose, authorization, and retry behavior. It leaves some uncertainty about what exactly is returned or whether an existing inbox may be reused, but is largely sufficient.

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 only parameter is idempotency_key, and schema description coverage is 0%. The description explains its retry role ('Reuse the same idempotency key when retrying'), but does not specify format, uniqueness scope, or how to generate one.

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?

States a specific verb ('Get') and resource ('dedicated NoInfra email inbox') scoped to an agent running anywhere. It does not explicitly differentiate from sibling tools, but those siblings are unrelated catalog/service tools, so the purpose remains clear.

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?

Gives a prerequisite ('Your NoInfra account owner must authorize access first') and retry guidance ('Reuse the same idempotency key when retrying'). It does not name alternatives or when-not conditions, but no close alternative appears among the sibling tools.

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