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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and closed-world, so the safety profile is covered structurally. The description adds one genuinely new behavioral fact: the response deliberately omits unconfirmed prices and durations. That is useful but thin for a tool whose content is otherwise undefined.

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?

A single short sentence with the verb and the key content caveat front-loaded; there is no filler. It is efficient rather than padded, though the brevity shades into under-specification.

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?

An output schema exists, so return values need not be explained, but the description still leaves the agent unable to tell this read apart from academy_start, academy_welcome, or academy_tutor_context. For a zero-required-parameter entry-point tool in a crowded academy namespace, that distinction is the missing piece and it is absent.

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 both parameters (locale, idempotencyKey) are fully described as transport-level concerns in the schema itself. The description contributes nothing about parameters, so the baseline of 3 applies rather than anything higher.

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 gives a verb ('Read') and a nominal resource ('the coaching entry point'), so it is not a tautology of the name. However, 'coaching entry point' is ambiguous and is not distinguished from near-neighbours like academy_start, academy_welcome, academy_teach, or academy_tutor_context, leaving the agent to guess which entry point this is.

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?

There is no statement of when to call this versus the many sibling tools, no prerequisites, and no exclusions. The only implicit guidance is the hint that prices and durations are filtered out, which implies a pre-purchase context but never says so.

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