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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds real context beyond that: it enumerates what the response contains (declared/engaged/idle minutes per shift) and explicitly rules out view/open counts, preempting a false assumption. It still omits pagination/size behavior, which keeps it off a 5.

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 tight sentences with the payload definition front-loaded and the exclusion immediately after. The raw route (GET /reports/:token/engagement) and internal symbol (get_report_engagement) are scaffolding an agent cannot act on, but they cost little space.

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 must describe the return shape, and it does so concretely (minutes by worker shift). One required, fully documented parameter means nothing else is needed for correct invocation. Only the absence of any note on result size or empty-report behavior keeps it from 5.

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 coverage ('The report token'), so the schema already carries the semantics. The description contextualizes the token as belonging to a report on the report list, but adds no format or sourcing detail (e.g. obtain it from tascan_list_reports). 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?

States a specific resource and payload: declared, engaged and idle minutes per worker shift for a report. The line 'There are no view or open counts' sharpens the boundary against what an agent might expect from a generic 'engagement' report. It stops short of naming the sibling it displaces (e.g. tascan_get_report or tascan_get_cycle_report), so an agent must still infer the split.

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?

'Read tier' plus the read-only framing implies when it is appropriate, and the metric list implies the analytical use case. However, with close siblings like tascan_get_report, tascan_get_cycle_report and tascan_org_analytics, there is no explicit 'use this instead of X when Y' guidance, leaving selection to inference.

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