Rename pane

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

With no annotations provided, the description carries the burden. It discloses a key behavioral trait: the change is 'applied live to the pane header.' It also explains the exact semantics of clearing or omitting the subtitle. This goes beyond the schema, though it does not mention reversibility or error conditions.

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 a single, tightly written sentence that front-loads the primary purpose and then adds essential usage nuances. No wasted words; every clause contributes value.

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 rename tool with no annotations and no output schema, the description covers the action, the live behavior, and the subtitle edge cases. It lacks explicit error/prerequisite info, but given the low complexity, this is nearly complete. Minor gap: no mention of what happens if pane does not exist.

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?

Schema coverage is only 33%, so the description must compensate. It clarifies that label is the pane 'title' and explains the subtitle behavior in detail. paneId remains self-explanatory but is not given extra context. Overall, the description adds meaningful semantics beyond the schema for two of the three parameters.

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 begins with a specific verb ('Change') and clearly identifies the resource ('a pane's label (title)') plus the optional subtitle. It distinguishes from sibling pane tools (e.g., recolor_pane, lock_pane) by focusing on the naming aspect and the live header update.

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 gives clear parameter-level instructions ('Pass subtitle:"" to clear it; omit subtitle to leave it unchanged') and implies the tool is for changing pane labels. However, it does not explicitly compare with alternatives or state when not to use it, so it misses the 'explicit when/when-not' bar.

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