Get Elasticsearch users

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

Annotations declare readOnlyHint, idempotentHint, non-destructive and closed-world, so the safety profile is already known. The description adds nothing beyond that: no statement about what happens when the user or cluster does not exist, no note on auth scope, and no return-shape expectation.

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?

It is brief, but that brevity is under-specification rather than economy: four words repeat the title and convey no extra meaning. Nothing is front-loaded because there is no content to front-load.

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?

There is no output schema and one of three parameters is undocumented, with two required parameters carrying only regex patterns. Given the dense family of sibling *_get/*_list tools, the description needs to identify the resource precisely and does not.

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% for the three parameters; 'cluster' and 'username' have no descriptive text in either the schema or the description. Only 'namespace' is documented via $defs, and the description does not compensate for the two undocumented required parameters at all.

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?

Tautological: description restates name/title.

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?

No when-to-use guidance, no prerequisites, and no reference to the obvious alternative elasticsearch_users_list. The only hint at single-item retrieval is the required 'username' parameter, which is inference from the schema rather than stated guidance.

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