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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds that the result is an aggregation across multiple domains, which is genuinely useful context, but says nothing about data scoping, freshness, cost, or behavior when a section is empty.

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?

One sentence with no filler, and the identity of the resource plus its contents are front-loaded. The colon list is dense but each item earns its place as a preview of the payload.

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 description carries the burden of describing the return value and does so by enumerating the five content areas. That is sufficient for a single-parameter read, though it leaves open whether each section is always present or may be null.

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 a single required parameter with 100% schema description coverage, and the schema's own note ('The student_id from list_students') already bins the semantics. The description adds nothing about studentId, so the baseline 3 applies.

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?

Names the resource (one student) and enumerates the five domains the summary aggregates (workouts, sessions, assessments, payments, next class), which tells an agent this is a composite read rather than a single-domain fetch. It is clear but never explicitly contrasts itself with close siblings like get_student, get_student_health, or get_students_activity.

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 phrase 'as the app dashboard shows it' implies the intended context — a consolidated overview instead of several targeted calls — but no when-to-use rule, prerequisites, or alternative is stated. An agent must infer that it should prefer this over stacking get_balance, list_student_sessions, and get_latest_assessments.

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