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

The annotations already cover the safety profile (readOnlyHint, idempotentHint, destructiveHint=false, closedWorld), so the bar is lower. The description adds that the result is the per-occurrence level rather than the aggregate, which is useful context. It says nothing about ordering, sampling, or how the paginated result is capped or ordered, which matters because there is no output schema.

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 sentences with no filler, and the core 'what it lists' statement comes first, followed by the usage hint. Nothing is redundant or misplaced.

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?

The safety profile, parameters, and result semantics are all covered between the annotations, the schema, and the description. The one real gap is that a paginated list with no output schema would benefit from a line on ordering or how to page through results, which the description does not provide.

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 100%, so bugId, limit (default 50, max 200), and offset are already fully documented. The description adds no extra meaning, syntax, or hints about which parameter to tune. With the schema doing all the work, 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?

The description gives a specific verb and resource: 'List the individual occurrences grouped under a bug'. That is clearly distinct from the grouped view a sibling like get_bug would show. It never names a sibling explicitly, though, so an agent must infer the split between this, get_bug_users, and get_live_occurrences.

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?

'Use this to see which users, sessions, releases, or environments were affected' gives concrete conditions for calling the tool. It does not name alternatives or say when not to use it, so the agent has to work out the overlap with get_bug_users and get_live_occurrences on its own.

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