RuView Hardware Setup
ruvnet/RuView
Brings a RuView CSI sensing node online by building ESP32-S3 or ESP32-C6 firmware, flashing the board, provisioning WiFi and checking the serial output.
Review Xtensa assembly code for ESP32 platforms. An agent skill from FastLED/FastLED.
Install Code Review Asm Xtensa
$ npx skills add FastLED/FastLED --skill code-review-asm-xtensa -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install FastLED/FastLED code-review-asm-xtensa --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/FastLED/FastLED.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/code-review-asm-xtensa .claude/skills/code-review-asm-xtensa && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "code-review-asm-xtensa" agent skill from https://github.com/FastLED/FastLED/tree/master/.claude/skills/code-review-asm-xtensa into .claude/skills/code-review-asm-xtensa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review-asm-xtensa", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/FastLED/FastLED/tree/master/.claude/skills/code-review-asm-xtensaType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add FastLED/FastLED --skill code-review-asm-xtensa -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install FastLED/FastLED code-review-asm-xtensa --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/FastLED/FastLED.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/code-review-asm-xtensa .agents/skills/code-review-asm-xtensa && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "code-review-asm-xtensa" agent skill from https://github.com/FastLED/FastLED/tree/master/.claude/skills/code-review-asm-xtensa into .agents/skills/code-review-asm-xtensa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review-asm-xtensa", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add FastLED/FastLED --skill code-review-asm-xtensa -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install FastLED/FastLED code-review-asm-xtensa --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/FastLED/FastLED.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/code-review-asm-xtensa .cursor/skills/code-review-asm-xtensa && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "code-review-asm-xtensa" agent skill from https://github.com/FastLED/FastLED/tree/master/.claude/skills/code-review-asm-xtensa into .cursor/skills/code-review-asm-xtensa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review-asm-xtensa", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/FastLED/FastLED.git --path .claude/skills/code-review-asm-xtensa--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add FastLED/FastLED --skill code-review-asm-xtensa -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install FastLED/FastLED code-review-asm-xtensa --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/FastLED/FastLED.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/code-review-asm-xtensa .gemini/skills/code-review-asm-xtensa && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "code-review-asm-xtensa" agent skill from https://github.com/FastLED/FastLED/tree/master/.claude/skills/code-review-asm-xtensa into .gemini/skills/code-review-asm-xtensa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review-asm-xtensa", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install FastLED/FastLED code-review-asm-xtensaInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add FastLED/FastLED --skill code-review-asm-xtensa -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/FastLED/FastLED.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/code-review-asm-xtensa .github/skills/code-review-asm-xtensa && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "code-review-asm-xtensa" agent skill from https://github.com/FastLED/FastLED/tree/master/.claude/skills/code-review-asm-xtensa into .github/skills/code-review-asm-xtensa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review-asm-xtensa", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add FastLED/FastLED --skill code-review-asm-xtensa -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install FastLED/FastLED code-review-asm-xtensa --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/FastLED/FastLED.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/code-review-asm-xtensa .opencode/skills/code-review-asm-xtensa && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "code-review-asm-xtensa" agent skill from https://github.com/FastLED/FastLED/tree/master/.claude/skills/code-review-asm-xtensa into .opencode/skills/code-review-asm-xtensa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review-asm-xtensa", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
code-review-asm-xtensa- GitHub stars
- 7.5k
- Token cost
- ~305 tokens
- SKILL.md length
- 111 words
- Files
- 1
- Skills in repo
- 23
- Repo updated
- First seen
- Licence
- MIT
At a glance
Review Xtensa assembly code for ESP32 platforms. An agent skill from FastLED/FastLED.
- Tasks that involve Embedded systems
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Tasks that involve Code review
What it does
Code Review Asm Xtensa is an agent skill from FastLED/FastLED. Review Xtensa assembly code for ESP32 platforms. Checks for critical errors in inline assembly, ABI compliance, and optimization opportunities. Use after modifying ESP32 assembly or inline asm code.
Its SKILL.md is about 310 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Development, covering Embedded systems and Code review. It works with ESP32. The repository describes itself as: The FastLED library for colored LED animation on Arduino. Please direct questions/requests for help to the FastLED Reddit community: http://fastled.io/r We'd like to use github… The licence is MIT.
When your agent uses it
- Tasks that involve Embedded systems
- Tasks that involve Code review
Example prompts
- “/code-review-asm-xtensa”
What it can do on your machine
Read from SKILL.md and the folder at commit 8d6ed12. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Code Review Asm Xtensa loads about 305 tokens when it runs. Until then it costs about 55 tokens; SKILL.md has 111 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from FastLED/FastLED at commit 8d6ed12, republished under its MIT licence (© FastLED). 111 words, ~305 tokens.
Download SKILL.mdSave it as
.claude/skills/code-review-asm-xtensa/SKILL.md (or your agent's skills folder).- name
- code-review-asm-xtensa
- description
- Review Xtensa assembly code for ESP32 platforms. Checks for critical errors in inline assembly, ABI compliance, and optimization opportunities. Use after modifying ESP32 assembly or inline asm code.
- disable-model-invocation
- true
- context
- fork
- agent
- code_review_asm_xtensa-agent
Perform comprehensive manual review of Xtensa assembly code in FastLED ESP32 platforms for correctness, ABI compliance, safety, and performance.
What Gets Checked
Critical Errors (Must Fix)
- E001: Invalid
movifor 32-bit addresses - E002: Wrong return instruction in interrupts
- E003: Missing
memwmemory barriers for MMIO writes - E004: Windowed ABI used in interrupt handlers
- E005: Unaligned memory access
- E006: Missing
IRAM_ATTRon interrupt handlers - E007: Mixed ABI usage in same function
Performance Warnings
- W001-W005: Load-use hazards, loop overhead, nesting depth, register pressure, dependency chains
Optimization Opportunities
- O001-O004: Array indexing, conditional moves, loop unrolling, code density
Search for Xtensa assembly code in git changes (inline asm and .S files) and perform deep analysis.
© FastLED, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .claude/skills/code-review-asm-xtensa of FastLED/FastLED.
Open the folder on GitHubat commit 8d6ed12
Compare with similar skills
Code Review Asm Xtensa next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Code Review Asm Xtensa this skillFastLED/FastLED | 7.5k | — | ~305 | Automated safety check: Pass | MIT | |
| RuView Hardware Setupruvnet/RuView | 97k | — | ~1.8k | Automated safety check: Notes | MIT | |
| Esp32 Firmware Engineeralxv2016/folloup-sticky | 115 | 1 repos | ~3.8k | Automated safety check: Pass | GPL-3.0 | |
| RuView mmWave Radar Setupruvnet/RuView | 97k | — | ~907 | Automated safety check: Notes | MIT | |
| Openscad MechanicalBlueAndi/Pixelix | 443 | — | ~1.8k | Automated safety check: Pass | MIT | |
| Auto EmbeddedDunCanYounG-1/MICU-auto-embedded | 253 | — | ~1.6k | Automated safety check: Pass | CC-BY-NC-4.0 |
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Related
Works with
Categories
Questions about Code Review Asm Xtensa
What does Code Review Asm Xtensa do?
Review Xtensa assembly code for ESP32 platforms. An agent skill from FastLED/FastLED. Code Review Asm Xtensa is an agent skill from FastLED/FastLED. Review Xtensa assembly code for ESP32 platforms.
When should I use Code Review Asm Xtensa?
Code Review Asm Xtensa fits situations like: tasks that involve Embedded systems; tasks that involve Code review.
How do I install Code Review Asm Xtensa in Claude Code?
Run `npx skills add FastLED/FastLED --skill code-review-asm-xtensa -a claude-code`. Or copy the skill folder (.claude/skills/code-review-asm-xtensa in FastLED/FastLED) into .claude/skills/code-review-asm-xtensa in your project. Claude Code loads it when a task matches its description.
How do I install Code Review Asm Xtensa in Codex?
Run `npx skills add FastLED/FastLED --skill code-review-asm-xtensa -a codex`. Or copy the skill folder (.claude/skills/code-review-asm-xtensa in FastLED/FastLED) into .agents/skills/code-review-asm-xtensa in your project. Codex loads it when a task matches its description.
Can I use Code Review Asm Xtensa in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add FastLED/FastLED --skill code-review-asm-xtensa -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/code-review-asm-xtensa, .gemini/skills/code-review-asm-xtensa, .github/skills/code-review-asm-xtensa and .opencode/skills/code-review-asm-xtensa in your project.
What does Code Review Asm Xtensa need to run?
SKILL.md names no scripts, command-line tools or credentials: Code Review Asm Xtensa is instructions for the agent only.
Does Code Review Asm Xtensa access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Code Review Asm Xtensa safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Code Review Asm Xtensa use?
Code Review Asm Xtensa is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Code Review Asm Xtensa use?
About 305 tokens (SKILL.md is roughly 1.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Code Review Asm Xtensa?
Skills that share tags, products or a category with Code Review Asm Xtensa: RuView Hardware Setup (ruvnet/RuView, 97k stars), Esp32 Firmware Engineer (alxv2016/folloup-sticky, 115 stars), RuView mmWave Radar Setup (ruvnet/RuView, 97k stars) and Openscad Mechanical (BlueAndi/Pixelix, 443 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Code Review Asm Xtensa?
FastLED (a GitHub organization) maintains it in FastLED/FastLED, which has 7,506 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on October 7, 2026.
Source: FastLED/FastLED on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.