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

Annotations already declare readOnly/idempotent/openWorld=false/non-destructive, so the safety profile is covered. The description adds real behavioral context beyond them: a 14,000-character cap per representation, the caveat that inferred expectations need review, that reproduction requires fresh observations, and that report content is untrusted data.

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?

Five compact sentences, each carrying a distinct fact (purpose, inputs, size cap, sibling routing, caveats), with the purpose front-loaded. Slightly dense and the 'Omitted full paths point to get_report' clause is terse to the point of ambiguity.

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 and 0% schema coverage on four parameters, the description compensates well: it names the returned artifacts, both scopes, the size cap, the required input combination, and the trust caveat. An agent has everything needed to call it correctly.

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 coverage is 0%, so the description carries the full burden and does: it explains projectId, the mutual-exclusion rule for eventId/groupId ('exactly one'), and the format enum defaulting to json. The one-of constraint is not encoded anywhere in the schema, so this is net-new guidance.

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 generative verb and the exact artifact produced: 'reproduction actions, captured setup requirements, provisional expectations and gaps.' It also distinguishes the two scopes (one report vs. the latest actionable occurrence in an error group), which no sibling tool does.

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?

Gives a clear selection condition ('Supply projectId and exactly one eventId or groupId') and routes the agent elsewhere for full paths ('Omitted full paths point to get_report'). It stops short of an explicit contrast against the closest sibling, get_error_group.

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