set_vbat_display_lpf_period

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

With no annotations, the description discloses key behavioral details: sets a period, default value 30, does not affect alarm thresholds, and provides the data type (UINT8). It could further clarify if any side effects exist or if a confirmation is returned, but for a simple parameter setter, this is good.

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—two sentences plus inline spec—with no redundant or unnecessary words. Every sentence serves a clear purpose.

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 straightforward setter with one parameter and no output schema, the description provides adequate context: purpose, effect, what it doesn't affect, type, and default. Could mention acceptable range or if there's a confirmation, but overall sufficient.

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 coverage is 100% (parameter described). The description adds value by specifying the default value (30), data type (UINT8), and the purpose (smooths display flickering). This goes beyond 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 specifies the tool's function: setting the LPF period for voltage displayed on OSD to smooth flickering. It distinguishes itself from sibling tools like 'get_vbat_display_lpf_period' (read) and other vbat-related setters by stating 'Does not affect alarm thresholds'.

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 for smoothing OSD voltage flickering and clarifies it does not affect alarms. However, it lacks explicit guidance on when to choose this tool over alternatives (e.g., other vbat settings) or when not to use it.

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