nexo_stop

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

The description states the immediate effect (removes from active sessions) but lacks details about side effects, required permissions, or reversibility. Since no annotations are provided, the description should carry more weight, but it remains 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 short (two sentences plus an args line) and front-loaded with the core purpose. Every sentence serves a function, though the args line could be integrated.

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 stop tool with one parameter and no output schema, the description covers the basics. However, it does not address post-close behavior or potential triggers, which would be helpful given the large number of sibling 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?

With 0% schema description coverage, the description must explain the parameter. It only says 'sid: Session ID to close,' which is nearly a restatement of the schema. No additional meaning or context is provided.

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 'Cleanly close a session. Removes it from active sessions immediately.' This provides a specific verb (close/remove) and resource (session), making the tool's purpose unambiguous. It distinguishes from sibling session tools by focusing on termination rather than reading or writing.

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 explicitly advises calling this tool 'when ending a conversation to avoid ghost sessions.' This gives clear guidance on when to use it, though it does not mention when not to use it or suggest alternatives.

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