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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false, and openWorldHint=false, so the safety profile is fully covered by structured data and the description adds nothing behavioral. It does not mention pagination, filtering defaults, result caps, or what the returned user objects include.

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 text is short but wastes half its length on a duplicated sentence ('GET /api/users. GET /api/users.') and a raw operation ID hash, then leads with the least informative content. Nothing is front-loaded usefully.

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?

With no output schema, 0% parameter coverage, and free-form nested objects in the schema, the description would need to explain result shape and query semantics but does neither. The describe_operation referral is the sole piece of compensating context for an otherwise undocumented list endpoint.

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 0% and both top-level parameters ('query' and 'params') are opaque pass-through objects with no property documentation. The description offers no meaning for either — only the indirect pointer to describe_operation, which does not explain how query filters map to the API.

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 restates the title verbatim ('GET /api/users'), which is effectively a tautology for a hashed tool name. It conveys only the HTTP method and path, not what a 'user' record contains or whether this lists all users versus a filtered subset, so an agent cannot distinguish it from get_users_by_id or get_users_by_userId_permissions on description alone.

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 only actionable guidance is the pointer to describe_operation for native request schemas, which is a workflow hint rather than a when-to-use rule. There is no statement of when this list endpoint is preferred over get_users_by_id, get_users_by_userId_permissions, or the other user-related siblings.

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