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

The annotations already mark the tool as destructive. The description adds no additional behavioral context, such as whether deletion is permanent, requires special permissions, or affects associated data like segment members. It merely restates the action without disclosing consequences beyond the annotation.

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 one short sentence that gets straight to the point with no filler. It is maximally concise and structurally clear, delivering the core action efficiently with no wasted words.

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?

Even with the destructive annotation, the description omits important context such as irreversibility, side effects on segment members, or any prerequisites. For a simple delete tool, more behavioral detail would be expected, and the description alone does not fully prepare an agent for the consequences of invocation.

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 schema fully describes the single parameter segmentId with 'The segment ID to delete'. The description adds minimal value by clarifying the resource type ('customer segment'), but this is already implied by the tool name. Baseline 3 is appropriate since schema coverage is 100%.

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 uses a specific verb ('Delete') and resource ('customer segment'), clearly distinguishing it from sibling tools like create_segment, update_segment, and get_segment. There is no ambiguity about the tool's function.

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, prerequisites, or exclusions. It simply states the action without differentiating from alternatives or explaining conditions for deletion, leaving the agent to infer from the tool name alone.

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