postfader_delivery_manifest

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

Annotations already cover the safety profile (readOnlyHint=true, idempotentHint=true, destructiveHint=false, openWorldHint=false), so the bar is lower. The description's 'without writing a file' adds a concrete, useful behavioral detail that reinforces the read-only nature in human terms, but it doesn't add richer context such as behavior with invalid/stale sessions or whether the view is regenerated fresh each call. No contradiction with annotations.

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 containing zero filler. The verb comes first, the resource follows, and the distinguishing qualifier ('without writing a file') is placed at the end without bloating the sentence. Every word earns its place.

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 one-parameter tool with 100% schema coverage, a rich annotation set, and an output schema, the description covers what matters: the purpose and the key non-persistence behavior. It stops just short of perfect because it does not explicitly name postfader_delivery_export_manifest as the file-writing counterpart, though the contrast is obvious from the wording and sibling list.

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 coverage is 100% and the single parameter review_session_id is fully described ('Review Session whose current delivery view should be built'). The description's 'delivery view' vocabulary aligns with the parameter description, but it adds no parameter-specific semantics beyond what the schema already provides. 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 states a specific verb ('Build'), a specific resource ('the final multi-dimensional delivery view'), and adds the scope-limiting qualifier 'without writing a file,' which distinguishes it from the sibling postfader_delivery_export_manifest. An agent can tell at a glance what this tool produces and what it deliberately does not do.

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 phrase 'without writing a file' implies the usage boundary — use this when you need the delivery view in memory, not persisted — and the sibling name postfader_delivery_export_manifest makes the alternative inferable. However, the description never explicitly names the alternative or states when-to-use vs. when-not-to-use, leaving the routing to inference rather than direct guidance.

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