End S3Session

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

Annotations already declare destructiveHint:true and readOnlyHint:false, so the description's 'End' confirms mutation. However, it adds no additional behavioral context—no mention of side effects, reversibility, or what happens to the session. With annotations present, the description adds minimal value.

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 extremely short, which is concise, but it is under-specified rather than efficiently written. It front-loads the action but omits any supporting details, making it less useful than a more structured description of similar length.

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 destructive action with one parameter and no output schema, the description is nearly empty. It does not explain what workspaceSlug refers to, what side effects occur, or what the tool returns. The agent has almost no information beyond the tool name and annotations.

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, workspaceSlug, with 0% description coverage. The description does not mention or explain this parameter at all, leaving the agent without any semantic guidance beyond the schema's bare type definition.

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 states a specific verb ('End') and resource ('S3 session'), and the name and sibling list make it clear it's the counterpart to createS3Session. It is unambiguous about its function, though it does not explicitly differentiate itself from siblings.

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 alternatives. It does not mention when it should be called, prerequisites, or that it should be used to terminate a session started by createS3Session. The agent must infer usage from the name and context.

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