Read Arduino code

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

Annotations already mark the tool as read-only, idempotent, and non-destructive. The description adds useful behavioral context by disclosing that it opens the Code panel and switches to Text mode, which is a UI state change that an agent should know about. No annotation contradiction.

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 compact: one procedural sentence followed by an Args line. It is front-loaded with the primary action and contains no filler, repetition, or unnecessary caveats.

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 read-only tool with one optional parameter and no output schema, the description covers the essential action and return value. It could be slightly more explicit about operating on the active circuit's sketch, but the tool name and Tinkercad context make this reasonably clear.

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 the description does not need to add much. The sole parameter response_format is fully documented in the schema with enum values and a clear description, and the tool description merely lists the arg name without adding new meaning.

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 a specific verb and resource: open the Code panel, switch to Text mode, and return the sketch. This distinguishes it from sibling tools like tinkercad_set_code, and the title 'Read Arduino code' reinforces the read-only retrieval purpose.

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 implies the tool should be used when the agent needs to read the current Arduino sketch, but it does not explicitly state when to use this tool versus alternatives such as tinkercad_set_code. There is no direct mention of exclusions or when-not-to-use conditions.

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