Create a list

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

The annotations already define the tool as not read-only and not destructive. The description adds that the list is empty initially and references a follow-up action, but it does not disclose other behavioral traits such as duplicate handling, permissions, or side effects. This adds some context beyond annotations but is not rich.

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 two short sentences with the key action front-loaded. Every word contributes meaning without unnecessary elaboration.

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 create tool, the description adequately explains the purpose and next step, with full schema coverage and annotations providing safety information. It is complete enough for an agent to invoke correctly, though it could mention the returned object or validation rules.

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 schema has 100% description coverage for all three parameters, so the baseline applies. The description does not add any parameter-specific meaning or details beyond what is already in the schema.

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 'Create a new, empty game list' with a specific verb and resource. It also distinguishes from the sibling tool add_game_to_lists by instructing to use that afterward to populate, differentiating the creation step from population.

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 clear context by advising 'Use add_game_to_lists afterwards to populate it', which establishes the sequential workflow. However, it does not explicitly mention when not to use this tool or compare with other alternatives, so it lacks explicit exclusions.

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