esp32-cpp

A review add-on for ESP32 C++ firmware, the software controlling small connected devices.

In plain words
What is it for?
It helps review ESP32 variants, FreeRTOS tasks, ESP-IDF and PlatformIO projects, peripherals, memory, and embedded C++ code.
Why use it?
It gives development work a focus on the device-specific concerns that can cause failures, crashes, or hard-to-debug hardware problems.

Plugin for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code
/plugin marketplace add mathisk2095/jko-claude-plugins
agentmods
npx agentmods add plugins/mathisk2095/jko-claude-plugins/esp32-cpp
Clone the repo
git clone --depth 1 https://github.com/mathisk2095/jko-claude-plugins

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

esp32-cpp scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/esp32-cpp/.claude-plugin/plugin.json · 30 lines

What it actually says

{
  "name": "esp32-cpp",
  "description": "ESP32 firmware review for all variants, FreeRTOS, ESP-IDF/PlatformIO, peripherals, and memory",
  "version": "1.0.0",
  "license": "MIT",
  "author": {
    "name": "John Kozaris"
  },
  "homepage": "https://github.com/johnkozaris/jko-claude-plugins",
  "repository": "https://github.com/johnkozaris/jko-claude-plugins",
  "keywords": [
    "esp32",
    "esp-idf",
    "platformio",
    "freertos",
    "embedded",
    "c++",
    "firmware",
    "iot",
    "rtos",
    "peripherals",
    "debugging",
    "memory",
    "esp32-s3",
    "esp32-c3",
    "esp32-c6",
    "esp32-p4"
  ]
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 30 lines scan A 37f56529b650

Subscribe to this mod's changes

esp32-cpp is a plugin published in the GitHub repository mathisk2095/jko-claude-plugins (3 stars, last pushed 3d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.