get_segments

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

With no annotations, the description must disclose behavioral traits. It only states 'Get all segments for a subscriber list', implying a read operation but omits details such as whether results are paginated, ordered, or rate-limited. The tool's simple nature partly mitigates this, but the description fails to add substantive behavioral context.

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 that directly states the tool's purpose. It is appropriately sized with no wasted words and is front-loaded with key information.

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?

While the description states what the tool does and the required input, it does not explain the output format or any pagination behavior. For a simple retrieval tool with no output schema, this is adequate but not complete; it could mention that the output is a list of segment objects.

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 only parameter 'list_id' has a schema description 'The list ID' with 100% coverage. The tool description adds no additional meaning beyond the schema, so a baseline score of 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 'Get all segments for a subscriber list' clearly specifies the verb 'Get', the resource 'segments', and the context 'subscriber list'. It effectively distinguishes from sibling tools like 'get_segment_details' (specific segment) and 'create_segment'.

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?

No guidance is provided on when to use this tool versus alternatives such as 'get_segment_details' or 'get_segment_subscribers'. The description lacks context about scenarios where this tool is appropriate and does not mention exclusions.

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