subaccount_create

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

With no annotations, the description carries the full burden of behavioral disclosure. It communicates that the operation creates a subaccount, but it does not mention permissions required, uniqueness constraints on email or subaccount_id, whether the operation can fail for existing accounts, or any side effects beyond creation. This is a significant gap for a mutating tool.

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 compact and well-front-loaded with a one-sentence purpose, followed by an Args list and a Returns note. Every line earns its place, and there is no redundant or promotional language.

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 creation tool with an output schema, the description is mostly adequate: parameters are documented and the return is indicated. However, the lack of usage guidance and behavioral context, especially around permission and uniqueness requirements, leaves the agent without important decision-making information.

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 0%, so the description must compensate. It adds meaningful semantics for all three parameters: email, display name, and custom identifier, and marks email as required. It lacks constraints like format or uniqueness, but the basic meaning is clear and covers every parameter.

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 opens with 'Create a new subaccount,' a specific verb and resource that immediately distinguishes it from the sibling subaccount tools, which are all find/analyze/setup/monitor operations. The parameter list reinforces the creation purpose without ambiguity.

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 given about when to use this tool versus alternatives such as subaccount_find_by_email or subaccount_setup_permissions. There are no exclusions, prerequisites, or conditions. The intended use is only implied by the tool name and the word 'Create.'

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