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Seeed-Studio

KiCad MCP Server

by Seeed-Studio

extract_pinmux_config

Extracts pin multiplexing assignments from KiCad schematics, showing which MCU peripherals map to which pins. Optionally filter by MCU type.

Instructions

Extract pin multiplexing configuration for MCUs.

This function extracts pin multiplexing (pinmux) configuration for MCU components, showing which peripherals are assigned to which pins.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
schematic_pathYesPath to .kicad_sch file
component_typeNoOptional MCU type filter (e.g., 'stm32', 'esp32', 'nrf52')

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

No annotations exist, so the description carries the burden. It describes the function but does not explicitly state behavioral traits like whether the tool is read-only or modifies anything, leaving room for ambiguity.

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 two sentences, front-loaded with the core purpose, and contains no unnecessary words.

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?

Given full schema coverage and an existing output schema, the description sufficiently explains the tool's purpose and scope without needing return value details.

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%, and the description adds context about 'showing which peripherals are assigned to which pins', which enhances understanding beyond raw parameter names and types.

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 identifies the verb 'extract' and resource 'pinmux configuration for MCUs', specifying what the tool does and differentiating from sibling tools like 'extract_gpio_config'.

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 is provided on when to use this tool versus alternatives such as other extraction tools (extract_gpio_config, extract_i2c_devices, etc.), nor are there any prerequisites or exclusions mentioned.

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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