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

The description discloses default values for wallet_fk, account_fk, and subscription_type_fk, notes that the first two can be set later, and describes the return format. Since no annotations are present, this information is valuable, though it does not cover error handling or uniqueness constraints.

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 JSDoc-style format is compact and logical, with each parameter described on its own line and a clear return statement. No redundant or filler content.

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 4-parameter create operation with no annotations, the description covers all inputs, defaults, and the return value. It is sufficiently complete for an agent to invoke the tool correctly, especially with the output schema also available.

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?

All four parameters are explained with clear descriptions: identifier as session_id, wallet_fk and account_fk as Netfluid foreign keys with defaults, and subscription_type_fk as a database type defaulting to freemium. This fully compensates for the 0% schema description 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 'Creates a customer' and specifies the unique identifier (session_key). It distinguishes from sibling tools like paywall__customer_find by indicating creation rather than retrieval.

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 explicit guidance is provided on when to use this tool versus alternatives such as other customer-related tools. It only describes the action and parameters, leaving the agent to infer appropriate use cases.

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