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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered. The description adds that this hits the GoTrue admin API (implying admin credentials) and is environment-scoped, but says nothing about pagination behavior, ordering, or result size limits.

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?

Two short sentences, purpose front-loaded, zero filler. The trailing "GET .../auth/users" is a minor restatement but useful for identifying the underlying endpoint.

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 full schema coverage, complete annotations, and no output schema, this is minimally adequate. An agent still lacks return-shape expectations and pagination semantics, which matter when deciding whether to loop over pages.

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 every parameter is already documented, including page (1-based) and limit. The description adds no meaning beyond the schema — it does not clarify whether page and limit are strings-in-practice numbers or how they interact.

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?

States a specific verb and resource ("List auth users") plus the backing surface ("per-environment GoTrue admin API"), which separates it from siblings like auth.config.get or member.put. It does not explicitly name a sibling, so it stops short of a 5.

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?

"per-environment" implies the tool must be scoped to one environment and the required org/project/environment parameters reinforce that, giving implied usage context. There is no explicit when-to-use/when-not guidance or pointer to an alternative for listing users by other dimensions.

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