set_clip_fades

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

With no annotations, the description carries the full burden. It discloses the key behavior that only supplied fade lengths are modified and that the final fade values are returned. It does not discuss side effects or error conditions, but the core mutation semantics are covered.

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 compact: a single purpose sentence, two behavior sentences, and an args list. Each sentence adds value, and the args list is necessary because schema descriptions are absent.

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 output schema exists, return values are covered, and the description provides all necessary context: target clip, optional fades, update behavior, and audio-clip restriction. It is complete for a moderately simple setter tool.

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?

The inline 'Args' section explains each parameter beyond the schema, including zero-based indexing and beat units, adding meaning the schema lacks. This fully compensates for the 0% schema description coverage.

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 clearly states it sets fade in and/or fade out lengths on an audio clip, using the specific verb 'Set' and the resource 'audio clip'. It also notes 'Only available for audio clips' to distinguish scope from clip types.

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 provides concrete context like 'Only provided values are changed' and applies only to audio clips, giving a clear sense of when to use it. However, it does not explicitly mention alternatives (e.g., get_clip_fades for reading) or provide exclusionary guidance beyond the audio-clip restriction.

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