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

Annotations already declare read-only, idempotent, non-destructive behavior, so the description earns credit for adding what annotations cannot: the permission requirement and the fact that agent rows carry active API-key counts and last key use. It does not mention pagination or result limits, which is the remaining gap.

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 sentences, zero filler: the operation and returned data come first, the authorization constraint second. Nothing to trim.

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 read-only single-parameter list tool with no output schema, the description covers what is listed, the special agent fields, and the access requirement. It stops short of describing result shape or pagination, but an agent has enough to call it correctly.

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% and there is a single required parameter, so the schema already documents it. The description adds only that the slug identifies an organization, which is marginal beyond 'Namespace slug of the organization' 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 uses a specific verb ('List') plus resource ('members of the organization') and scopes it via the namespace slug, which is clearer than the bare title 'List agents'. However, it does not distinguish itself from the sibling 'list_namespace_members', which an agent may reasonably consider interchangeable.

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?

It states the authorization prerequisite ('Requires organization owner/admin'), which is genuine usage context. But it gives no guidance on when to choose this over 'list_namespace_members' or 'create_agent'/'delete_agent' workflows, leaving the main selection ambiguity unresolved.

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