remove_sender_domain

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

The description discloses the behavioral consequence (email reverts to default), but lacks details on reversibility, permission requirements, or side effects. Since no annotations are provided, the description carries the full burden and is somewhat sparse.

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 two sentences, front-loaded with the action, and every word adds value. No redundancy or irrelevant 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?

The description explains the core purpose and effect, but does not cover return values, potential errors, or prerequisites (e.g., domain must be registered). Given the tool's simplicity, it is adequate but not thorough.

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 input schema documents the only parameter ('project_id') with its description. The description adds no further details about the parameter, so it meets 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 the action ('Remove') and the resource ('a project's custom sender domain'), and adds the effect ('Email reverts to sending from mail.run402.com'). This distinguishes it from sibling tools like 'add_custom_domain' or 'check_domain_status'.

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 implies the tool is for removing a custom sender domain, which is distinct from adding or checking status. However, it does not explicitly state when not to use it or mention alternatives.

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