create_an_address

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

Annotations already indicate readOnlyHint=false and idempotentHint=false. The description adds the explicit warning that calling twice may create duplicates, which is valuable. However, it does not elaborate on other behavioral aspects like permissions or side effects.

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 very concise, with a header line providing method, resource, and endpoint, followed by a clear purpose and a behavioral note. Every sentence is informative without redundancy.

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?

The description lacks information about return values (no output schema), prerequisites, or error conditions. For a creation tool, failing to mention what is returned (e.g., the created address ID) leaves the agent without full context.

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 coverage is 100% with descriptions for nested fields like 'country'. The description does not add any additional parameter guidance beyond what is in the schema, relying entirely on the input schema for details.

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 clearly states 'Create an address' and 'Creates a new record', using specific verb and resource. It also distinguishes itself from update/delete siblings by emphasizing creation, and notes non-idempotence, which adds specificity.

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 description provides no guidance on when to use this tool versus alternatives like 'update_an_address' or other creation tools. It only notes non-idempotence as a caution, but fails to explicitly state usage context.

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