close_chat

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

With no annotations provided, the description carries the full behavioral burden. It discloses the key non-destructive behavior: the conversation remains in ChatGPT after the tab is closed. This gives the agent useful safety-relevant context beyond the bare action name.

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, front-loaded sentence with no filler. Every part contributes meaning, and the clarifying parenthetical adds important behavioral information without bloating the text.

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 one-parameter close action with no output schema, the description is mostly complete: it states the action and its main side effect. The only notable gap is that the 'chat' parameter is left underspecified, but the tool's simplicity limits the impact.

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 description coverage is 0%, so the description must compensate for the undocumented 'chat' parameter, but it does not. The parameter is only named, with no explanation of what format the chat identifier takes or where it comes from.

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 a specific verb and resource: it closes the browser tab of a chat. The parenthetical 'the conversation stays in ChatGPT' distinguishes this from ending or deleting a chat, and the action is clearly distinct from sibling tools like open_chat and new_chat.

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 when this tool should be used: when the agent wants to close the tab while preserving the conversation. However, it does not explicitly say when not to use it or mention alternatives such as stop or open_chat.

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