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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), so the extra value here is the required API-key scope `dashboards:read`, which is exactly the kind of auth prerequisite an agent needs and cannot get from annotations. It also states the efficiency characteristic (no pagination) and the aggregation dimensions, though it does not describe the shape or nesting of the returned counts.

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?

Three compact sentences: capability first, use case second, auth requirement last. No filler, no repetition of the tool name, and the most decision-relevant content is front-loaded.

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 explaining returns, and it does list the breakdown dimensions, which is the key information. It stops short of describing the response's grouping/nesting or whether custom-field summaries require admin permissions, but nothing critical to calling the tool correctly is missing.

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?

The phrase "for any scope" gestures at the scope enum but adds no semantics beyond it, and nothing explains the scope/scopeIdentifier pairing (that scopeIdentifier is required for space/folder/list and omitted for workspace). With 75% schema description coverage the schema already carries the parameter docs, so 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?

The description opens with a specific verb+resource ("Get aggregated counts and breakdowns") and enumerates exactly what is aggregated — status, priority, assignee distributions, custom-field summaries. It implicitly separates itself from task-listing siblings ("without paginating through tasks") but never names an alternative tool such as pm_search_tasks or pm_read_activity_log.

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?

Usage is conveyed through a scenario ("how is project X doing?" questions) and a negative constraint (avoid paginating through tasks), which is genuinely helpful routing. However, no sibling tool is named as the alternative and there is no explicit when-not-to-use guidance, so an agent must infer the boundary itself.

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