set_firefox_tab_group_collapsed

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

With no annotations, the description carries the burden. It does reveal that the tool verifies the resulting collapsed state, which adds useful behavioral detail. However, it does not mention error handling (e.g., group not found), permission requirements, or side effects, leaving some transparency gaps.

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 entire description is one sentence, front-loaded, and contains zero waste. It packs action, resource, and a verification detail efficiently.

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?

The tool is simple, but this description alone doesn't fully prepare an agent for edge cases like multiple windows or missing groups. No output schema exists, and the description's verification claim isn't elaborated (e.g., how it verifies, what it returns). Still, it's adequate for a basic action.

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 100%, so baseline is 3. The description adds minimal parameter meaning beyond the schema; 'exactly named' aligns with the schema's exact case-sensitive matching, but the description does not enrich understanding of 'collapsed' or 'windowId' further.

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 action ('collapse or expand') and the resource ('one exactly named Firefox group'), plus adds a distinguishing trait: verifying the resulting state. This separates it from sibling tools like rename or color change.

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 implies the tool is for toggling collapse state but offers no explicit guidance on when to use it versus alternatives, nor any exclusions. Context is clear, but there is no mention of alternative approaches or prerequisites beyond the exact-name requirement.

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