get_list_members

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

No annotations are provided, so the description carries the burden of disclosing behavior. It explains pagination, count limits (default 20, max 100), and cursor usage from a previous response. It does not mention auth, rate limits, or error conditions, but covers the core pagination behavior well.

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 compact and well-structured, with a one-sentence purpose followed by a clear Args list. Every line provides useful information without unnecessary fluff.

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 paginated read operation, the description covers the essential parameters and pagination behavior. An output schema exists, so return values do not need explanation. However, it could add a brief note about when to use this tool vs list_subscribers, but that is minor for completeness.

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 significant meaning beyond the input schema: it specifies max count=100, default count=20, and explains that the cursor is a pagination cursor from a previous response's next_cursor. The schema only lists types and defaults, so these details are valuable.

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 starts with 'Get members of a Twitter List,' which uses a specific verb and resource, and clearly distinguishes this tool from sibling tools like get_list_subscribers and get_list_tweets. The inclusion of 'paginated' also hints at the tool's scope and behavior.

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 when you need a list's members, but it does not explicitly state when to use this tool versus alternatives, nor does it mention exclusions or related list tools. There is no explicit guidance on when not to use it.

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