domains_add_url_forward

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

The only annotation is idempotentHint: false. The description adds no behavioral context beyond this, such as side effects, permission requirements, or behavior when a forwarding rule already exists. It does not contradict the annotation, but also adds no meaningful disclosure.

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 one concise sentence with no filler words. It is front-loaded with the action and resource, making it maximally concise for what it communicates.

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?

With six parameters and an output schema, the description is too sparse to provide complete context. It lacks usage guidelines, behavioral side effects, and how this operation interacts with existing forwarding rules. The schema compensates for parameters but not for overall operational 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?

The schema provides 100% coverage with descriptions for all six parameters, so the baseline is 3. The description adds no parameter-level meaning beyond the schema, but the schema already carries the semantic burden.

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 uses the specific verb 'Add' and resource 'URL forwarding rule', clearly distinguishing it from sibling tools like domains_get_url_forwards and domains_delete_url_forward. The action and target are unambiguous.

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?

No guidance is provided on when to use this tool vs alternatives, nor any prerequisites, exclusions, or context. The description is solely a statement of action without any situational guidance.

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