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

Annotations already establish readOnly/non-destructive/non-open-world, so the description's added value is the result composition: three distinct buckets, newest-first ordering, and inclusion of each failure's message. That is meaningful behavioral context beyond the structured fields. It stops short of saying whether the two proposal sections are capped or whether the log is truncated at the limit.

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 compact sentence, with the identity of the tool front-loaded and the three sections ordered as they presumably return. No filler or restatement of the name.

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?

With no output schema available, the description must carry return-shape information, and it does convey the three sections, ordering, and failure messages. The notable gap is that it never clarifies that the log is the only section the limit applies to and how the proposal lists are bounded.

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 limit parameter is fully documented in the schema, including its default of 20 and max of 100. The description adds nothing about the parameter, so the baseline of 3 applies.

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 inbox" plus the enumeration of three result groups (proposals awaiting a person, proposals held by a guardrail, recent execution log) tells an agent precisely what it will get back. The resource is specific, but the verb is never stated outright (implied by the name) and nothing distinguishes it from siblings such as list_app_events or list_campaigns.

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?

Calling it "the inbox" implies this is the triage/entry-point call for pending human work, which is useful implied guidance. However, there is no explicit when-to-use rule, no statement that it should be the first call, and no mention of alternatives for reviewing launches or campaigns.

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