Selects or deselects a track item by index. Use exclusive mode to clear other selections first, ensuring only the chosen item remains active.
Select/deselect an item.
Args: item_index: Item index. selected: True=select. exclusive: Deselect others first.
| Name | Required | Description | Default |
|---|---|---|---|
| selected | No | ||
| exclusive | No | ||
| item_index | Yes |
Changes observed during successful MCP inspections.
v0.3.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description must carry behavioral info. It only states basic select/deselect action, missing details on side effects, scope (e.g., current track?), or visual feedback.
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?
Concise and clear with bullet-point style for parameters. No unnecessary words.
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?
Adequate for a simple selection tool, but lacks context on return value, error handling, and scope. With many sibling selection tools, more context would improve completeness.
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?
Description explains each parameter ('item_index: Item index.', 'selected: True=select.', 'exclusive: Deselect others first.'), adding meaning beyond the schema titles despite 0% coverage metric.
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?
Description clearly states 'Select/deselect an item.' It identifies the action and resource, and from sibling names, it's distinct from mass selection or deselection tools.
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?
No explicit guidance on when to use vs alternatives like selection_select_all_items or selection_deselect_all_items. Usage is implied but not clarified.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.