at_configure

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

With no annotations, the description carries full burden but only adds timing context. It lacks details on side effects, permission requirements, or whether changes take effect immediately. The statement 'Can be called before or after opening the port' is helpful but incomplete for a full behavioral picture.

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 two short sentences, both front-loaded with key information. Every word is necessary and there is no fluff, making it highly concise and structured.

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 7 optional parameters with full schema coverage and no output schema, the description adequately conveys the tool's purpose and timing. It could mention that all parameters have defaults, but the schema already provides those details. Overall, it is sufficiently complete for an agent to understand and use the tool.

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?

Schema description coverage is 100%, so baseline is 3. The description lists parameter categories but adds no extra meaning beyond the schema's descriptive names and defaults. It does not provide examples or constraints.

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 configures serial port parameters and lists the categories (baud rate, data bits, etc.). It distinguishes itself from sibling tools like at_open_port and at_send_command by focusing specifically on configuration, not opening or sending.

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 notes it can be called before or after opening the port, providing clear timing context. However, it does not mention when not to use it or suggest alternatives, though the sibling list implies distinct use cases.

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