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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds the HTTP endpoint and the full field inventory of the response, but says nothing about errors, 404 behavior, permissions, or rate 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 sentences, front-loaded with the resource and its attributes, ending with the endpoint for orientation. The attribute list is long but each item is a concrete field name, so nothing is padding.

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, the field enumeration in the description effectively documents the return payload, which is the key missing piece an agent would need. The only real gap is that it doesn't say how to recover from an invalid id or what an empty/missing course looks like.

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?

There is exactly one parameter and schema description coverage is 100% ('Axis course id (from axislms_list_courses)'), so the schema fully documents it. The description adds nothing about course_id, which is acceptable given full schema coverage — baseline 3.

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 the resource precisely (one online course) and enumerates the returned attributes plus the underlying endpoint GET /courses/{id}/, so the retrieval purpose is unambiguous. It doesn't explicitly contrast itself with axislms_list_courses or axislms_course_report, so sibling differentiation is only implied by 'One'.

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?

'One online course' implies a single-record fetch as opposed to the list variant, which is weak but present guidance. There is no explicit when-to-use/when-not or named alternative among the many course-related siblings (list_courses, count_courses, course_report).

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