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bvandevliet

Betaflight MCP

by bvandevliet

get_d_max_advance

Retrieves the setting that controls D boost timing relative to gyro rate peaks. Use only after baseline tuning is stable.

Instructions

Get d_max_advance: Allows D boost to start before the gyro rate peaks, using feedforward signal. Set to 0 during baseline tuning — rarely beneficial and can cause premature D oscillation. Only explore once the baseline is stable. [UINT8, 0–200, default: 20]

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

No annotations are provided, and the description does not explicitly state that this tool is read-only or non-destructive. While the name implies a get operation, the lack of side-effect disclosure or safety assurances means the agent cannot be sure of behavioral traits.

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?

The description is compact at three sentences, with front-loaded purpose and usage advice. However, it mixes read and write guidance, which could be streamlined by separating the get tool's role from the parameter-tuning advice.

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

Completeness5/5

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

For a zero-parameter get tool with no output schema or annotations, the description is remarkably complete. It explains the parameter's function, when to avoid it (baseline tuning), potential risks (oscillation), and numeric constraints, covering all needed context.

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?

The input schema has zero parameters, so schema coverage is trivially 100%. The description adds value by specifying the value range (0–200) and default (20) in brackets, providing context that is not required by the schema but aids understanding.

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

Purpose5/5

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

The description clearly states the tool retrieves the d_max_advance parameter and explains its role in allowing D boost to start before gyro rate peaks, with a specific verb (Get) and resource (d_max_advance). It also provides the value range and default, distinguishing it from sibling get_* tools.

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?

The description advises setting the parameter to 0 during baseline tuning and exploring only after stabilization, but this advice is more relevant to the set operation. It does not explicitly clarify when to use this get tool versus the set_d_max_advance sibling, leaving the agent to infer the read-only purpose.

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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