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bvandevliet

Betaflight MCP

by bvandevliet

set_f_yaw

Set the feed forward gain for yaw axis. Input a value to tune yaw response and stick feel.

Instructions

Set f_yaw: Feed forward for yaw. [UINT16, default: 120]

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
valueYesValue for f_yaw (UINT16)
Behavior2/5

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

The description indicates it's a write operation ('Set'), but no annotations are provided. It doesn't disclose any side effects, persistence behavior, or validation rules beyond the schema. Minimal transparency for a mutation tool.

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

Conciseness4/5

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

Very short description, but it repeats the tool name in 'Set f_yaw:'. Could be trimmed to 'Feed forward for yaw. [UINT16, default: 120]' without losing clarity. Otherwise concise.

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

Completeness3/5

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

Adequate for a simple parameter setter with one parameter. It tells the parameter type and default, but lacks context on what f_yaw affects in the flight controller (e.g., yaw rate response). Given the simplicity, it is minimally complete.

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?

Schema coverage is 100%, so baseline 3. The description adds the default value of 120 and clarifies the type as UINT16, which is not fully captured in the schema (integer with no range or default). This provides useful additional meaning.

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 sets 'f_yaw' for yaw feedforward, distinguishing it from other set_* tools by specifying the exact parameter. However, it doesn't explain what feedforward for yaw means in the context of flight control, which might be unclear to non-experts.

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

Usage Guidelines2/5

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

No guidance on when to use this tool versus other set_* tools. It simply states it sets f_yaw, without any context on prerequisites, typical use cases, 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.

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