List Group Members

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

The annotations already declare readOnlyHint=true, so the description need not repeat that. However, it does not add any behavioral context beyond the purpose, such as pagination, ordering, or potential limitations. For a simple list operation with safety annotations, the description is adequate but not enriched, matching the TDQS 4.3 baseline of 3.

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 with no wasted words. It clearly communicates the essential action in a compact form, achieving high conciseness and structure.

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 tool with one parameter, no output schema, and clear read-only annotations, the description is complete. It fully conveys the tool's purpose without requiring additional context. The simplicity allows for completeness at this minimal level.

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 coverage is 100% (the single parameter group_id is described as 'The Canvas group ID'). The tool description does not add any parameter information beyond what is already in the schema, so it meets the baseline of 3 for high schema coverage with no additional semantics.

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 action ('List') and the resource ('all members of a group'), making it distinct from siblings like 'list_groups' (which lists groups) and 'list_course_users' (which lists users in a course). The verb and object are specific and unambiguous.

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 does not explicitly state when to use this tool versus alternatives. While it is implied that one uses this when needing group members, there is no guidance on context, exclusions, or comparisons with sibling tools that also return user lists. This is a minimal viable level of implied usage.

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