list_beta_testers

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

With no annotations, the description carries the burden of behavioral disclosure. It communicates that this is a read-only listing operation and that filtering by beta group is possible, but it does not mention default limits, pagination behavior, or whether all testers are returned when no filter is provided. It adds some context beyond the bare name but lacks depth.

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, front-loaded sentence that states the action and the key optional filter. No unnecessary words or redundancy.

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, read-only list tool with zero required parameters and full schema coverage, the description is largely sufficient. It does not describe the return format, but no output schema exists; for a list operation the implication is clear. It is missing some usage nuance but is complete enough for its complexity.

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?

Schema description coverage is 100%, so the schema already documents all three parameters with meaningful descriptions. The description adds value by emphasizing the beta group filter, but it does not explain limit or filterEmail behavior beyond what the schema already provides. Baseline 3 is appropriate.

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 uses a specific verb ('List') and resource ('beta testers'), and notes an optional filter by beta group. This clearly distinguishes it from sibling tools like list_beta_groups (groups), list_users (users), and add_beta_tester (mutation).

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 phrase 'optionally filtered by beta group' implies a use case for listing testers with or without a group filter, but it does not explicitly state when to prefer this over similar tools like list_users or list_beta_groups. There is no when-not-to-use guidance or mention of alternatives.

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