tracesList

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

No annotations are provided, so the description carries full burden. It states 'Retrieves a list of traces' but does not disclose whether the operation is read-only, requires permissions, or has any side effects. Minimal behavioral insight.

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 sentence, which is concise but at the expense of missing essential information. It is front-loaded with the key verb, but every sentence should earn its place; this one is too sparse to be fully effective.

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?

Given the large set of sibling trace tools, the description lacks context to help the agent choose correctly. No output schema is provided, and the description does not explain what the list contains or how it differs from similar tools. Incomplete for the complexity.

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?

Both parameters are already documented in the input schema with descriptions (100% coverage). The description adds no additional semantic meaning to the parameters. Baseline 3 is appropriate.

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 action ('Retrieves a list of traces') and the resource ('traces'). However, it does not differentiate this tool from sibling trace tools like tracesListRequests or tracesHitList, which also list traces but with different scopes. A 4 reflects clarity without sibling distinction.

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?

The description provides no guidance on when to use this tool versus alternatives. Among the many trace-related siblings, the agent has no criteria to select tracesList. This omission significantly limits the tool's usability.

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