unfold_track

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

With no annotations, the description carries full burden. It specifies the basic action but fails to disclose important behaviors such as error handling (e.g., if track_index is not a group track), side effects, or required permissions.

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 extremely concise, with two sentences. It front-loads the action and separates the parameter explanation. However, it could omit the redundant "Parameters:" line since only one parameter exists and the schema already defines it.

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 simplicity (1 parameter, no output schema), the description is adequate but could be improved by mentioning that it only affects group tracks that are currently folded or by referencing the fold_track sibling.

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 schema has 0% description coverage, so the description adds value by explaining that track_index is "the index of the group track". However, this is minimal and does not elaborate on valid range or behavior if index is out of bounds.

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 the verb "Unfold (expand)" and the resource "group track", making the tool's purpose unmistakable. It also implicitly distinguishes itself from sibling tools like "fold_track" and "flatten_track" by specifying the operation on group tracks.

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 description indicates the tool operates on group tracks but provides no guidance on when to use it versus alternatives like fold_track or flatten_track. No explicit when-not-to-use or prerequisite information is given.

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