NEXO Brain

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

No annotations are provided, so the description carries the full burden. It discloses that the tool generates a formatted menu using box-drawing characters, which is useful behavioral context. However, it doesn't mention whether this is a read-only operation, if it requires specific permissions, or if it has side effects like logging. For a tool with zero annotation coverage, this leaves gaps in understanding its safety and operational impact.

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 highly concise and well-structured. The first sentence states the core purpose, and the following sentences add specific details (what it shows and formatting) without redundancy. Every sentence earns its place, and it's front-loaded with the main action.

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 that the tool has 0 parameters, 100% schema coverage, and an output schema exists, the description is reasonably complete. It explains what the tool does and what information it includes, which is sufficient for a no-parameter tool. However, it could be more complete by specifying the output format or linking to the output schema for details, but the presence of an output schema reduces this need.

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 tool has 0 parameters, and schema description coverage is 100% (since there are no parameters to describe). The description doesn't need to add parameter semantics, so a baseline of 4 is appropriate. It correctly indicates no input is required by not mentioning any parameters.

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 tool's purpose: 'Generate the NEXO operations center menu with alerts and active sessions.' It specifies the verb ('Generate') and resource ('NEXO operations center menu'), and lists what it shows (date, due alerts, menu items, active sessions). However, it doesn't explicitly distinguish it from sibling tools like 'nexo_status' or 'nexo_heartbeat', which might also provide status information.

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 provides no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites, frequency of use, or compare it to siblings like 'nexo_status' (which might show general status) or 'nexo_reminders' (which might list alerts differently). Usage is implied only by the purpose statement.

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