set_blackbox_device

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

With no annotations, the description must carry behavioral disclosure. It mentions a behavioral requirement for SERIAL ('high baud rate required') but does not disclose persistence, reboot requirements, or side effects. This is adequate but minimal.

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 extremely concise, using two brief lines to define purpose, valid values, default, and data type. Every sentence is necessary and adds value without redundancy.

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 single-parameter setter with no output schema, the description covers the essential semantics. However, it lacks information on whether the change is persistent, requires a reboot, or has any runtime implications. Slightly incomplete but functional.

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 only describes the parameter as 'Value for blackbox_device (UINT8)' without enumerating values. The description significantly adds meaning by listing the three possible values and their real-world mapping, exceeding the schema's minimal description.

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: 'Set blackbox_device: Logging destination.' It lists the specific valid values (SPIFLASH, SDCARD, SERIAL) and their meanings, distinguishing it from sibling set_* tools that modify other parameters.

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 usage by naming valid options but provides no explicit guidance on when to use this tool versus alternatives or when not to use it. It does not mention any prerequisites or conflicts with other settings.

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