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

With no annotations, the description carries the burden of disclosing behavior. It mentions the owner-only restriction and the clearing effect of an empty tool, which are useful. However, it does not disclose potential side effects (e.g., whether it affects existing mappings), reversibility, error conditions, or what happens to the www domain if already configured.

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 exceptionally concise: three short sentences that front-load the core purpose, then add the clearing behavior and the owner restriction. Every sentence earns its place with no filler or repetition.

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 adequately explains the tool's function, the special empty-tool behavior, and the owner restriction. However, it omits practical prerequisites such as whether the domain must already be attached to the workspace, whether the tool must be a valid installed tool, and what happens after invocation (e.g., confirmation or error). These gaps could leave an agent unsure about correct usage.

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 the schema already documents each parameter. The description adds minimal extra semantics: 'An empty tool clears it' reinforces the schema's 'empty string to show the tool list again' but doesn't clarify domain or workspace parameters further. This matches the baseline for full schema coverage.

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 a specific verb ('Make') and resource ('a domain'), and specifies the behavior: the domain opens one tool instead of the workspace's tool list. It also distinguishes itself from domain-management siblings by focusing on the tool-list redirect, making its unique purpose evident even without naming alternatives.

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 no guidance on when to use this tool versus siblings like domain_attach or domain_primary. It only mentions an 'Owners only' permission and that an empty tool clears the setting, neither of which helps an agent decide between alternatives or identify prerequisites.

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