jan3_logout

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

The description states it is 'idempotent,' which is helpful behavioral info. However, no annotations are provided, so the description carries the full burden. It does not mention side effects (e.g., invalidating sessions) or security implications (e.g., auth required). This is adequate but minimal.

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 very concise (two sentences), no wasted words. It front-loads the action and idempotency. Could optionally add 'logs out the user' for clarity, but current length is efficient.

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?

Given the tool's simplicity (one param, no output schema, no annotations), the description is minimally adequate. However, it lacks context such as return values or confirmation of success, and does not clarify the relationship to session management tools.

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 has one required parameter 'email' with 0% description coverage. The description does not explain the role of email, e.g., that it identifies which session to delete. The agent might guess from the tool name, but schema alone leaves ambiguity.

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 it deletes a persisted JAN3 session file, which effectively logs out the session. The verb 'delete' and resource 'session file' are specific, and it distinguishes from sibling tools like jan3_login or jan3_session_info.

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 vs alternatives such as jan3_login_start or jan3_login_complete. An agent would not know if this is the appropriate logout action or if there are prerequisites (e.g., must be logged in).

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