Embedded-AI-Harness: Skill for Claude Code

.claude/skills/esp-idf-handling/SKILL.md

esp-idf-handling is a skill for Claude Code from SensorsIot/Embedded-AI-Harness. It costs 145 tokens per session (6,094 once invoked), scanned B, original, MIT.

A guide for the full ESP-IDF process, where ESP-IDF is Espressif's development framework for ESP32 chips. It covers creating, configuring, building, flashing, monitoring, and updating firmware.

In plain words
What is it for?
Use it to configure projects and partitions, build firmware, flash over USB or a remote connection, monitor crashes, perform OTA updates, and recover from unstable devices.
Why use it?
It adapts the process to either a locally connected device or a remote testbench and explains recovery when flashing, startup, or updates fail.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: reads .claude/ paths.

This is SensorsIot/Embedded-AI-Harness's own configuration. It tells Claude Code how to work on Embedded-AI-Harness itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Embedded-AI-Harness configures →

Reuse

Borrowing it

Nothing to install: this file belongs to SensorsIot/Embedded-AI-Harness. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/SensorsIot/Embedded-AI-Harness/main/.claude/skills/esp-idf-handling/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/SensorsIot/Embedded-AI-Harness

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for esp-idf-handling

README.md
[![agentmods](https://agentmods.dev/badge/skills/sensorsiot/embedded-ai-harness/esp-idf-handling/github.svg)](https://agentmods.dev/skills/sensorsiot/embedded-ai-harness/esp-idf-handling)
Your own site
<a href="https://agentmods.dev/skills/sensorsiot/embedded-ai-harness/esp-idf-handling"><img src="https://agentmods.dev/badge/skills/sensorsiot/embedded-ai-harness/esp-idf-handling/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for esp-idf-handling

Your own site · 80×15
<a href="https://agentmods.dev/skills/sensorsiot/embedded-ai-harness/esp-idf-handling"><img src="https://agentmods.dev/badge/skills/sensorsiot/embedded-ai-harness/esp-idf-handling.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 145 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,094 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 9 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Privilege Escalation · line 30
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium Data Exfiltration · line 128
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 233
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 273
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 314
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 354
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 403
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 471
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Privilege Escalation · line 522
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00145 $0.06094
Opus 5 $0.00072 $0.03047
Sonnet 5 $0.00029 $0.01219
Haiku 4.5 $0.00015 $0.00609

Measured 12d ago against content hash 0ee0520ad782, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade B, and why

esp-idf-handling scanned grade B with 2 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 12d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (discover-testbench.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo python3 .claude/skills/esp-idf-handling/discover-testbench.py --hosts

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s $TESTBENCH_URL/api/info
.claude/skills/esp-idf-handling/SKILL.md · 544 lines

How it starts

The opening of the file, as written. The whole thing — 544 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ESP-IDF Handling

Complete lifecycle for ESP-IDF projects — from project creation to flashing and monitoring. Automatically adapts to local USB or remote testbench.

Step 1: Detect Environment

Determine whether a testbench is available or the device is local.

curl -s $TESTBENCH_URL/api/info
  • Response received → testbench is available, use remote flashing (RFC2217/OTA)
  • Connection refused / timeout → try the discovery script:
    sudo python3 .claude/skills/esp-idf-handling/discover-testbench.py --hosts
    
  • Still no response → no testbench, use local USB flashing

Step 2: Project Setup

source /opt/esp-idf/export.sh
idf.py create-project <name>           # Create new project
idf.py set-target esp32s3              # Set target chip (esp32, esp32s3, esp32c3, etc.)
idf.py menuconfig                      # Interactive configuration (writes sdkconfig)

sdkconfig.defaults

Put persistent config in sdkconfig.defaults (not sdkconfig which is generated):

CONFIG_ESPTOOLPY_FLASHSIZE_4MB=y
CONFIG_PARTITION_TABLE_CUSTOM=y
CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions-4mb.csv"

Step 3: Build

source /opt/esp-idf/export.sh
idf.py build                           # Build
idf.py fullclean                       # Clean build directory

Step 3b: When there is no local toolchain

export.sh missing is not a broken setup — a project set up by the setup-action skill builds on GitHub deliberately, and some machines never install ESP-IDF at all. Check before assuming:

ls /opt/esp-idf/export.sh ~/esp/esp-idf/export.sh 2>/dev/null || echo "build in CI"

Then the binaries have to come back before Step 4 can run:

# `gh` needs a token, and a tool call is a NON-interactive shell, where
# ~/.bashrc returns before it sources the secrets. Without this line gh says
# "not logged into any GitHub hosts" even though the terminal works fine.
# Never `gh auth login` — see the `github` skill.
. /run/secrets/env 2>/dev/null

gh run download -R <owner>/<repo> -D /tmp/fw            # latest successful run
gh run download -R <owner>/<repo> <run-id> -D /tmp/fw   # one specific run
gh release download v1.2.0 -R <owner>/<repo> -D /tmp/fw # a published release

Read the full file on GitHub · 544 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 12d ago First seen · 544 lines · 145 tokens per session scan B 0ee0520ad782

Subscribe to this mod's changes

esp-idf-handling is a skill published in the GitHub repository SensorsIot/Embedded-AI-Harness (173 stars, last pushed 1mo ago), licensed MIT. It adds 145 tokens to every session and 6,094 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it B with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

m5stack-cap-lora-1262

Hardware reference and firmware helper for the M5Stack Cap LoRa-1262 (SKU U214) — a snap-on cap for the Cardputer Adv (K132-Adv) and CardputerZero that carries a Semtech SX1262 sub-GHz LoRa radio (868–923 MHz, +22 dBm TX, external RP-SMA antenna) and an ATGM336H-6N GNSS receiver (GPS/QZSS/BeiDou/Galileo/GLONASS, UART…

iot-forge/m5stack-skills · 254 tokens

new-device-skill

Build or update an M5Stack hardware skill in this marketplace — a Controller (a board that runs firmware, like Core2 or AtomS3), a Unit (a peripheral you drive from a Controller, like a ToF sensor or a relay), or a Chip (an Espressif SoC capability layer, like esp32-c6). Use whenever adding a new board/unit/chip to…

iot-forge/m5stack-skills · 171 tokens

m5stack-tab5

Hardware reference and development helper for the M5Stack Tab5 (product code C145) — an ESP32-P4-based 5" touchscreen IoT/industrial terminal with an ESP32-C6 wireless co-processor, MIPI-DSI display, MIPI-CSI camera, ES8388 audio codec, BMI270 IMU, RX8130CE RTC, RS485, and a removable NP-F550 battery. Use this skill…

iot-forge/m5stack-skills · 236 tokens

m5stack-core2

Hardware reference and development helper for the M5Stack Core2 family — a 2.0" touchscreen ESP32 (classic, Xtensa LX6) Controller built around an AXP192 power management IC, ILI9342C display, FT6336U capacitive touch, BM8563 RTC, and (on original/1.1/1.3 revisions) an MPU6886 or BMI270 IMU. Covers the plain Core2…

iot-forge/m5stack-skills · 328 tokens

esp32-c6

Chip-level ESP-IDF capability reference for the ESP32-C6 SoC (single-core RISC-V HP core + RISC-V LP core, WiFi 6 + BLE 5.3 + Thread/Zigbee) — what the chip can do, distinct from any board's wiring. Use when a user wants to exploit ESP32-C6 hardware — WiFi 6/BLE/802.15.4 radio coexistence (Thread Border Router, Zigbee…

iot-forge/m5stack-skills · 307 tokens

esp32-p4

Chip-level ESP-IDF capability reference for the ESP32-P4 SoC (dual-core RISC-V HP cores + a RISC-V LP core) — what the chip can do, distinct from any board's wiring. Use when a user wants to exploit ESP32-P4 hardware — MIPI-CSI/DSI with the on-chip ISP, hardware JPEG encode/decode, hardware H.264 encode, PPA/2D-DMA…

iot-forge/m5stack-skills · 270 tokens