Write Arduino code

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

Annotations already include destructiveHint=true, and the description adds what gets destroyed: the entire Text-mode Arduino sketch. It also discloses non-obvious behavior around automatic Blocks-to-Text switching. No contradiction with annotations.

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?

Very compact: one purpose sentence, a small args block, and one behavioral note. Information is front-loaded and every sentence earns its place with no filler or repetition.

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 one-parameter seter, the description is sufficiently complete: it states the scope of the operation, the required sketch structure, and the automatic mode-switching behavior. It omits return/error details, but no output schema exists and this is a straightforward set-code operation.

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?

Input schema coverage is 100%, so baseline is 3. The description adds the requirement 'including setup() and loop()', which is meaningful beyond the schema's generic 'Full Arduino sketch' text.

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?

States a specific action ('Replace') and a specific resource ('entire Text-mode Arduino sketch'), which clearly distinguishes it from siblings like tinkercad_get_code. The title 'Write Arduino code' is expanded into a precise, scoped statement.

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?

Clearly indicates this is for full-sketch replacement, not partial modifications, via the word 'entire'. It also gives a concrete precondition: automatic Blocks-to-Text switching happens when the dropdown is present. It does not explicitly name alternatives, but the purpose is clear enough to route an agent.

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