Get LighterPack account info

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

With no annotations provided, the description carries the full burden. It discloses that the tool returns specific information and implies read-only behavior ('Returns...'). It also indicates the need for a signed-in user, implying authentication. This is transparent for a simple getter tool, though it does not explicitly state absence of side effects or error conditions.

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 a single, well-structured sentence that front-loads the primary result ('Returns the signed-in username') and then lists the secondary items (summary counts and settings). Every word earns its place with no redundancy or filler.

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 tool is simple with no annotations, no parameters, and no output schema. The description fully explains what the tool returns: username, list/category/item counts, and library-wide settings. This is sufficient for an agent to understand the tool's behavior and expected result without needing further detail.

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 tool has zero parameters, and the input schema is empty. According to the guidelines, 0 parameters yields a baseline score of 4. The description does not need to elaborate on parameter semantics since there are none, and it correctly focuses on the returned output.

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 tool returns signed-in username, library summary counts, and settings. It uses the specific verb 'Returns' and distinguishes itself from sibling tools that operate on individual lists, categories, or items, making it the go-to for account-level information.

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 usage for retrieving account and library-wide summary data. While it does not explicitly name alternatives or exclusions, the context is clear: use this tool to get the signed-in username, counts of lists/categories/items, and library-wide settings. It provides enough context to know when to invoke it.

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