Update domain forwarding

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

Annotations already communicate destructiveHint=true and idempotentHint=true. The description adds no behavioral context beyond restating that it modifies existing configuration, such as overwrite semantics, prerequisites, validation behavior, or what happens when no forwarding exists.

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 short and front-loaded with the core action. The second sentence adds the 'existing' qualifier but is largely redundant with the first, so it is not maximally tight.

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 three-parameter tool with full schema coverage, the description covers the basic purpose. It lacks useful context about how updating interacts with existing forwarding rules, how it differs from create/delete behavior, or what the result of the update is.

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 100%, so all three parameters are already documented with descriptions and the redirect_type enum is provided. The description adds no parameter-level detail beyond what the schema already supplies, so the baseline 3 applies.

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 and resource: 'Update domain forwarding configuration' and 'modify existing redirect configuration for domains.' This clearly distinguishes it from sibling tools like domains_createDomainForwardingV1, domains_getDomainForwardingV1, and domains_deleteDomainForwardingV1.

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 gives a direct usage directive: use this endpoint to modify existing redirect configuration. The context of 'existing configuration' is clear, though it does not explicitly name alternatives or state when not to use it.

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