esp32_pin_audit

esp32_pin_audit is a skill for Claude Code from agodianel/esp32-claude-workbench. It costs 22 tokens per session (752 once invoked), scanned A, original, MIT.

A skill that checks how ESP32 microcontroller GPIO pins are used across a project. GPIO pins are the hardware connections used to communicate with sensors, displays, and other devices.

In plain words
What is it for?
Use it before adding hardware support, during architecture reviews, when investigating hardware problems, or before release.
Why use it?
It finds pins assigned to more than one purpose, pins reserved for boot or serial communication, and differences between the code and its documentation.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it before adding hardware support, during architecture reviews, when investigating hardware problems, or before release.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/agodianel/esp32-claude-workbench/esp32_pin_audit
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.

Any agent
npx skills add agodianel/esp32-claude-workbench --skill esp32_pin_audit
Clone the repo
git clone --depth 1 https://github.com/agodianel/esp32-claude-workbench

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 esp32_pin_audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/agodianel/esp32-claude-workbench/esp32_pin_audit/github.svg)](https://agentmods.dev/skills/agodianel/esp32-claude-workbench/esp32_pin_audit)
Your own site
<a href="https://agentmods.dev/skills/agodianel/esp32-claude-workbench/esp32_pin_audit"><img src="https://agentmods.dev/badge/skills/agodianel/esp32-claude-workbench/esp32_pin_audit/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 esp32_pin_audit

Your own site · 80×15
<a href="https://agentmods.dev/skills/agodianel/esp32-claude-workbench/esp32_pin_audit"><img src="https://agentmods.dev/badge/skills/agodianel/esp32-claude-workbench/esp32_pin_audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 752 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00022 $0.00752
Opus 5 $0.00011 $0.00376
Sonnet 5 $0.00004 $0.00150
Haiku 4.5 $0.00002 $0.00075

Measured 12d ago against content hash 271a2129e84b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

esp32_pin_audit 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 12d ago.

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.

.claude/skills/esp32_pin_audit/SKILL.md · 100 lines

How it starts

The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ESP32 Pin Audit

Systematically audit GPIO pin usage across the project to detect conflicts, reserved pin misuse, and undocumented assignments.

When to Use

  • Before adding new peripheral code.
  • During architecture review.
  • When debugging mysterious hardware behavior.
  • Before release.

Steps

1. Collect All Pin Declarations

Search the project for pin definitions:

# Macro definitions
grep -rn "#define.*GPIO\|#define.*PIN\|#define.*SDA\|#define.*SCL\|#define.*MOSI\|#define.*MISO\|#define.*CS\|#define.*CLK" --include="*.h" --include="*.c"

# GPIO_NUM usage
grep -rn "GPIO_NUM_" --include="*.c" --include="*.h"

# Kconfig GPIO options
grep -rn "CONFIG_.*GPIO\|CONFIG_.*PIN" sdkconfig.defaults sdkconfig 2>/dev/null

2. Check Reserved Pins

Flag violations against these reserved pins:

GPIO Restriction Reason
0 Boot strapping Must be HIGH for normal boot, LOW for download
1 UART0 TX Default serial output
2 Boot strapping Must be LOW during flash
3 UART0 RX Default serial input
6–11 FORBIDDEN Connected to internal SPI flash
12 Boot strapping MTDI — affects flash voltage
15 Boot strapping MTDO — affects debug output
34–39 Input-only No output capability, no pull-up/pull-down

3. Detect Conflicts

Build a pin allocation table and check for:

  • Double assignment: Same GPIO used by two different peripherals.
  • Bus conflicts: I2C and SPI sharing the same pins.
  • ADC/DAC conflicts: ADC2 channels unusable when Wi-Fi is active.
  • Strapping conflicts: Boot pins used without awareness.

4. Verify Pull-Up/Pull-Down Configuration

For I2C lines:

  • External pull-ups are required. Internal pull-ups are too weak for reliable I2C.
  • Flag if only internal pull-ups are configured for I2C.

For inputs with no external circuitry:

  • Verify pull-up or pull-down is configured to avoid floating pins.

5. Check Documentation

Compare actual code pin usage against:

  • Pin map comments in source files.
  • README or documentation references.
  • Schematic references if available.

Read the full file on GitHub · 100 lines

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 · 100 lines · 22 tokens per session scan A 271a2129e84b

Subscribe to this mod's changes

esp32_pin_audit is a skill published in the GitHub repository agodianel/esp32-claude-workbench (79 stars, last pushed 5mo ago), licensed MIT. It adds 22 tokens to every session and 752 once invoked, about $0.0001 per session on Opus 5. 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 2026-08-30.

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