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

The description goes beyond annotations by explaining the side effect: it 'records an application for manual review' and does not approve distribution, sign agreements, transfer rights, or deliver music. It also adds a nuanced qualifier to the idempotency annotation—'for an active application'—which is valuable 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 three focused sentences with no filler. It front-loads the core action and condition, then efficiently lists exclusions and requirements. Every sentence adds necessary operational context.

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?

Given the tool's complexity (7 required parameters, no schema descriptions, a meaningful approval workflow), the description provides sufficient detail for correct invocation: when to call, which parameters must be present, the side effect, and the non-effects. An output schema exists, so not describing return values is acceptable.

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?

With 0% schema description coverage, the description carries the parameter-documentation burden. It explains that all three two-letter country codes are required, that adultSignerAttestation is a signer attestation, that confirmApplicationSubmission must be true, and that userIntentSummary should be concise. This meaningfully supplements the bare schema, though artistId is not explicitly described beyond 'artist's application.'

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 uses a specific verb and resource ('Submit an artist's application for Dynamoi music distribution') and clearly scopes what the tool does and does not do. It distinguishes itself from related operations like approving, releasing, or configuring splits, making its role unambiguous alongside siblings such as dynamoi_get_distribution_application and dynamoi_launch_campaign.

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?

It explicitly states the condition for use ('after the user explicitly asks to apply and all five eligibility requirements are met') and gives a clear when-not-to-use list via what it does not do. It does not name alternative sibling tools explicitly, but the behavior boundaries are sufficient for an agent to route correctly.

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