audience_create_pixel_viewers

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

Annotations already declare readOnly=false, idempotent=true, openWorld=true, destructive=false, so the safety profile is covered. The description reinforces this with 'guarded' and 'uncertain outcomes are not resent', adding nuance about non-resend on ambiguity, but says nothing about the confirmation_hash flow or required auth.

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?

A single front-loaded sentence with no filler, which is efficient. But the terseness tips into under-specification rather than precision for a 7-parameter mutation tool.

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 7-required-parameter mutation tool with an output schema present, the description should at least orient the agent on the confirmation/idempotency parameters, yet covers none of them. Return-value explanation is not needed given the output schema, but the parameter and selection gaps leave the definition substantially incomplete.

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 description coverage is 0% across 7 required parameters, so the schema provides no help either. The description offers no meaning for opaque fields like confirmation_hash, idempotency_key, or times_quantity_operation, only faintly implying a guarded/confirmation flow via 'guarded'.

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 verb ('create') and a resource ('pixel-viewer segment'), so the core action is identifiable. However, the odd phrasing 'Run one guarded pixel-viewer segment create' reads like an internal label and offers no differentiation from siblings such as audience_create_pixel or audience_validate_create.

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 on when to use this versus audience_validate_create, audience_create_pixel, or audience_reconcile_create. The only contextual hint is 'uncertain outcomes are not resent', which speaks to retry behavior rather than tool selection.

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