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

Beyond the annotations, the description provides no behavioral context: it does not mention uniqueness of email, whether plan_id is evaluated, notifications, billing side effects, or failure behavior. It only restates the literal action with a small scoping qualifier.

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 efficient sentence with no wasted words, and the 'end-customer' qualifier adds clarity beyond the tool title. It is concise, though extremely sparse and does not carry semantic load for the parameters.

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 a bare schema, no output schema, and a one-sentence description, the tool does not give enough context for correct use. It lacks guidance on what the created result is, how plan_id should be sourced, and what happens behaviorally when the client is created.

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%, and the description does not explain the meaning or constraints of name, email, company, or plan_id. An agent has to guess why plan_id matters and whether it must reference an existing plan.

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 a specific verb and resource: 'Create a client (end-customer) for the org.' The parenthetical disambiguates 'client' from other meanings, and the 'for the org' scope makes the target membership clear. This also distinguishes it from sibling tools by naming the entity being acted on.

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 this is used when creating a client, but it does not explicitly state when not to use it, prerequisites like choosing a plan, or how it relates to alternatives such as create_project or list_clients. The usage context is present but only implied.

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