ugs_connect

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the action but gives no insight into side effects, timeout behavior, failure modes, or whether the connection is persistent or requires reconnection after certain operations.

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, succinct sentence that conveys the core function without extraneous words. However, its extreme brevity sacrifices necessary detail, which prevents a higher score.

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 has 3 parameters, no annotations, and an output schema (not shown), the description is incomplete. It fails to explain parameter constraints, connection behavior, or error handling. While the output schema may cover return values, the description does not address usage context or potential exceptions.

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 input schema has 3 parameters with 0% coverage of descriptions. The tool description adds no information about what values are valid for 'port' (e.g., COM1, /dev/ttyUSB0), acceptable baud rates beyond the default, or possible 'firmware' options (GRBL, Marlin, etc.). This leaves agents without necessary context to set parameters correctly.

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: connecting UGS to a CNC machine via serial port. It uses a specific verb ('Connect') and resource ('UGS to the CNC machine'), and distinguishes from siblings like 'ugs_disconnect' and 'ugs_troubleshoot_connection'.

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 offers no guidance on when to use this tool versus alternatives, nor does it mention prerequisites (e.g., machine powered on, USB connected) or that this should be called before other operations like jogging or running files.

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