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bvandevliet

Betaflight MCP

by bvandevliet

get_rx_min_usec

Retrieve the minimum channel pulse width considered valid, used to detect signal loss on PPM/PWM inputs.

Instructions

Get rx_min_usec: Shortest channel pulse width considered valid. Values below this trigger signal-loss detection (PPM/PWM). [UINT16, default: 885]

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior3/5

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

No annotations exist, so the description carries full responsibility. It explains that values below this trigger signal-loss detection, adding behavioral context beyond the name. However, it does not explicitly state it is a read-only operation or any other side effects.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is extremely concise: one sentence with key information, front-loaded with the name and purpose. No wasted words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a parameterless tool with no output schema, the description covers the return type (UINT16), default value (885), and behavioral impact. It is complete enough for an agent to understand usage.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

There are no parameters, and schema coverage is 100%, so the baseline is 4. The description does not need to add parameter info as none exist.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it retrieves the shortest channel pulse width considered valid, with a signal-loss detection effect. While the sibling get_rx_max_usec exists, the description does not explicitly differentiate, but the name and context are sufficient.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Usage is implied as a simple getter for the minimum pulse width. No explicit when-not or alternatives are provided, but for a parameterless tool, this is minimally adequate.

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

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