pulse_line

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

There are no annotations, so the description must disclose behavior on its own. It explicitly states that the line is always restored even if interrupted and that the tool is refused in read-only mode, which are important side-effect and safety details. It does not cover connection-related behavior, but the core behavioral contract is clear.

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 and front-loaded: the core behavior appears in the first sentence, followed by practical uses and important caveats. Every sentence adds value and there is no filler.

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?

With an output schema present, the lack of return-value detail is acceptable. The main gap is the undocumented connection parameter, but the description otherwise provides enough operational context for an agent to select and invoke the tool correctly.

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 0%, yet the description explains line, level, and ms in context: DTR/RTS choices, boolean level, and millisecond duration. The connection parameter is not explained, so the parameter semantics are strong but incomplete.

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 first sentence states a precise operation: drive DTR or RTS to a level for a specified duration, then restore it. This clearly distinguishes pulse_line from siblings like set_lines or send_break, which involve sustained or different line manipulation.

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 Uses section gives concrete scenarios (Arduino reset, bootloader entry, PTT timing) and even suggests typical parameters such as DTR and 100 ms. It does not explicitly say when not to use the tool or name alternatives, so it stops short of a 5.

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