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domain-embedded — Claude Code skill: setup and use

Guides embedded and no_std Rust work around memory, interrupts, and peripheral access. Use it when building firmware for microcontrollers.

Install into Claude Code · Skills CLI (Vercel) All methods and platforms ↓ 
npx skills add actionbook/rust-skills --skill domain-embedded -a claude-code
Open on GitHub

What domain-embedded does

This skill adds embedded Rust constraints to the agent context: no heap, static buffers, peripheral ownership, and interrupt-safe shared state. It steers code away from Vec towards heapless::Vec<T, N>, and points to critical sections with Mutex<RefCell<T>> where state is shared.

It watches Cargo.toml and .cargo/config.toml, including the target configuration. The guidance covers PAC and HAL layers, embedded-hal, RTIC, Embassy, plus patterns based on #![no_std], #![no_main], #[entry], and static state.

Blocking code does not belong in an ISR because it can delay other interrupts. That is a reason to inspect interrupt handlers before adding I/O work.

What it helps with

  • replace heap-backed collections in no_std code
  • protect shared state from ISR races
  • assign clear ownership to GPIO and peripherals
  • choose RTIC, Embassy, or bare metal execution patterns

Example prompts for the agent

  • Review this Cargo.toml for embedded no_std Rust constraints.
  • Replace this Vec buffer with a fixed heapless collection.
  • Check GPIO access shared by an interrupt handler and the main loop.

How to install domain-embedded

1Skills CLI (Vercel)

npx skills add actionbook/rust-skills --skill domain-embedded -a claude-code

2Manually: put the files in place

~/.claude/skills/domain-embedded/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/domain-embedded/

Step by step, with commands for each platform: How to install skills in Claude Code: five ways

Questions about domain-embedded

How do I install domain-embedded in Claude Code?

Run npx skills add actionbook/rust-skills --skill domain-embedded -a claude-code, then run npx skills add actionbook/rust-skills --skill domain-embedded -a claude-code again. The skill file is placed at ~/.claude/skills/domain-embedded/SKILL.md.

What does domain-embedded do?

It gives an agent rules for embedded and no_std Rust, including static memory, peripheral ownership, and interrupt safety. It also maps those constraints to Rust patterns and crates.

Why should I avoid Vec and blocking work in an ISR?

Vec commonly relies on heap allocation, while the skill points to fixed-capacity heapless collections. Blocking an ISR can delay other interrupts, so work should be deferred to the main loop.

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