chat_delete

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

With no annotations provided, the description must carry the full burden of behavioral disclosure. It only says 'Delete the chat' without detailing effects like whether messages are deleted for all participants, whether the action is reversible, or what permissions are required—a significant gap for a destructive operation.

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, concise sentence with no unnecessary words or repetition. It is front-loaded and easy to parse, though its brevity sacrifices crucial operational context.

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 mutation tool with two parameters and no output schema, the description is insufficient. It fails to specify the exact scope of the 'delete' operation, the importance of chatId, or the implications for messages, making it incomplete for an agent to select and invoke correctly.

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 schema descriptions cover both parameters (100% coverage), so the baseline is 3. The tool description does not add any extra meaning beyond the schema; notably, it doesn't clarify the relationship between chatId and sessionId or why chatId is optional despite being seemingly essential.

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 'Delete the chat' with a specific resource, distinguishing it from message deletion or clearing. However, it leaves ambiguity about whether it removes the entire chat history or just the chat entry from the list.

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 guidance is provided on when to use this tool versus the many related chat tools such as chat_clearMessages or client_archiveChat. There is no mention of prerequisites, alternatives, or exclusions.

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