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

The readOnlyHint annotation already establishes that this is a safe read operation. The description adds useful behavioral context by saying the result is an aggregated per-session heaviest-weight progression curve rather than raw logs, but it omits pagination/limit behavior, sorting, and edge cases.

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 description is a single, front-loaded sentence with no wasted words. It immediately communicates the metric and scope.

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?

For a read-only analytical tool with three parameters and no output schema, the description conveys the core return concept but leaves gaps around the limit parameter, date range or ordering, and the shape of the returned progression data. It is minimally sufficient but not complete.

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 only 33%, and the description does little to compensate. It implies both clientId and exerciseName by saying 'one exercise of a client,' but it adds no meaning for limit, no format guidance for exerciseName, and no further detail beyond the existing clientId schema note.

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 clearly states the returned metric: heaviest weight per session for one client exercise, framed as a progression curve. It is specific enough to distinguish from raw workout logs, but it does not explicitly differentiate itself from nearby siblings like get_exercise_stats, get_exercise_detail, or get_client_progress.

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 explicit guidance on when to use this tool versus alternatives such as get_exercise_stats, get_client_personal_bests, or get_client_workout_logs. The phrase 'progression curve' implies a use case, but the description neither names alternatives nor states exclusions.

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