get_v1_user_highlights_by_username

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

No behavioral traits are disclosed beyond the billing note. Since no annotations are provided, the description should carry the burden, but it omits information on side effects, permissions, or error scenarios.

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 very short but at the expense of clarity. It reads more like a note than a tool definition. Every sentence should add value, but here the focus is on performance and billing rather than the tool's purpose.

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?

Given the lack of output schema, the description should explain what the tool returns, but it does not. There is no differentiation from sibling tools like get_v1_user_highlights or get_v2_user_highlights_by_username. The context provided is insufficient for correct agent invocation.

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 description adds no meaning to the parameters. The schema has a description only for 'force' (skip privacy check), and the description does not explain what 'amount' does or how the tool uses 'username'. Schema description coverage is low (33%), and the description does not compensate.

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 does not explicitly state that the tool retrieves user highlights by username. It begins with the endpoint path but lacks a verb like 'get' or 'fetch'. The mention of an alternative endpoint implies the purpose, but it is not directly clear.

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 provides a usage guideline by suggesting the by/id endpoint for speed. However, it does not specify when to use this tool (e.g., when you only have a username) or any other context where this tool is preferred.

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