get_segments_metadata

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

Discloses return structure (list of objects with attributes: name, category, data_type, selectable, filterable, sortable). With no annotations, this provides sufficient behavioral insight for a read-only list tool. Could mention idempotency, but not critical.

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, front-loaded with the action, no filler. Every sentence provides essential 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?

For a tool with no parameters and an existing output schema, the description fully explains what is returned. Complete for the tool's simplicity.

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?

No parameters, so baseline 4. The description adds no parameter info, which is appropriate since none exist.

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?

Describes exactly what the tool does: lists all available GAQL segments with metadata. The verb 'list' and resource 'segments metadata' are specific and clearly differentiate from siblings like get_metrics_metadata or get_resource_metadata.

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?

Clear context for when to use: to get segment metadata. No explicit when-not or alternative tools mentioned, but given the straightforward nature (no parameters, simple list), the guidance is adequate.

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