iyke_close

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

With no annotations provided, the description bears full responsibility. It discloses that closing a pane also closes all its tabs and that the last pane cannot be closed. While it doesn't detail side effects like unsaved changes, the disclosure is sufficient for the tool's simplicity.

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 two sentences long, with no extraneous information. It front-loads the core action and follows with key usage notes, making it concise and well-structured.

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?

For a simple tool with one optional parameter and no output schema, the description is complete. It explains the action, the alternative for single tabs, and a constraint (refusing to close the last pane). No gaps are evident.

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 input schema has 100% coverage with one optional parameter. The description adds meaning by stating that the default is the focused pane, which goes beyond the schema's minimal description. This effectively clarifies the parameter's behavior.

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 'close' and the resource 'pane', specifying that it closes the entire pane and all its tabs. It also distinguishes from closing a single tab via keyboard shortcuts, providing clarity amidst sibling tools like iyke_focus and iyke_split.

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 explicitly provides a when-not-to-use case: 'to close a single tab from the in-app keyboard, use ⌘⇧W (⌘W closes the whole pane).' It also notes that it refuses to close the last remaining pane, giving clear usage boundaries.

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