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.
npx skills add alexex1993/mcu-skills --skill esp32s3-cam-40pingit clone --depth 1 https://github.com/alexex1993/mcu-skillsWrote 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.
[](https://agentmods.dev/skills/alexex1993/mcu-skills/esp32s3-cam-40pin)<a href="https://agentmods.dev/skills/alexex1993/mcu-skills/esp32s3-cam-40pin"><img src="https://agentmods.dev/badge/skills/alexex1993/mcu-skills/esp32s3-cam-40pin/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.
<a href="https://agentmods.dev/skills/alexex1993/mcu-skills/esp32s3-cam-40pin"><img src="https://agentmods.dev/badge/skills/alexex1993/mcu-skills/esp32s3-cam-40pin.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00269 | $0.06222 |
| Opus 5.5 | $0.00108 | $0.02489 |
| Sonnet 5.5 | $0.00054 | $0.01244 |
| Haiku 4.5 | $0.00027 | $0.00622 |
Grade A, and why
esp32s3-cam-40pin 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 6d 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.
How it starts
The opening of the file, as written. The whole thing — 339 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ESP32-S3-WROOM CAM — 40-pin
Twenty pins a side, a DVP camera connector on the front, a microSD slot on the back, and two USB-C sockets. The camera claims fourteen of the thirty-six GPIO pads, the card claims three more, and the octal PSRAM claims three that are printed on the header and look free. What is left is seven pins.
That arithmetic is the whole story of this board. It also means the Arduino defaults for
Wire and SPI land squarely on camera data lines, and that the single most common
failure — "the camera does not initialise" — is almost never the camera.
reference/board-hardware.md— the board: the full 40-pin header table with every alternate function, the camera and SDMMC maps traced to the vendor's own code, the PSRAM and strapping pins, the two USB routes, the power tree, the flash/partition layout — plus a development guide (§8 toolchain, §9 platformio.ini, §10 flashing and recovery, §11 symptom → cause → fix table).reference/esp32s3-soc.md— the silicon: which GPIOs do not exist, strapping semantics from the datasheet's own tables, ADC1/ADC2 and touch maps, the LCD_CAM DVP controller, power-up glitches, memory map and PSRAM addressing, deep sleep and RTC wake pins.reference/esp32-family.md— the rest of the family, for "should this be a different ESP32?" questions: what does and does not port between chips, radio and USB capability per chip, the RMT generation table (WS2812 under Wi-Fi load), deep-sleep memory and ULP/LP-core availability, and a chip-selection table.reference/recipes.md— code that compiles:platformio.ini, camera init and capture, SDMMC, camera → SD, an MJPEG web server, moving the console to native USB, I2C and SPI on the pins that are actually free, ADC, WS2812, deep sleep.template/— a project that builds clean, in two variants, plus a scaffold script. Seetemplate/README.md.
Confirm the board first
Several ESP32-S3 camera boards exist and their pin maps are mutually incompatible. This skill is for the 40-pin one. Check three things before writing any pin:
What ships with it
17 files 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.
- assets/IMAGE.md 464 B
- reference/board-hardware.md 16 KB
- reference/esp32-family.md 22 KB
- reference/esp32s3-soc.md 9.4 KB
- reference/recipes.md 11 KB
- template/.gitignore 15 B
- template/include/app.h 674 B
- template/include/board.h 3.4 KB
- template/partitions.csv 797 B
- template/platformio.ini 1.3 KB
- template/README.md 2.7 KB
- template/src/board_report.cpp 3.1 KB
- template/src/camera.cpp 3.7 KB
- template/src/main.cpp 1.7 KB
- template/src/sdcard.cpp 2.3 KB
- template/variants/minimal/main.cpp 1.3 KB
- template/variants/new-project.sh 1.5 KB runs code
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.
- 6d ago Changed · +2 lines · +269 tokens per session 81b6fa50a1a1
- 2mo ago Changed · +4 lines e006d895d0ef
- 2mo ago First seen · 333 lines · 0 tokens per session scan A 860b2dc49f93
esp32s3-cam-40pin is a skill published in the GitHub repository alexex1993/mcu-skills (25 stars, last pushed 7d ago), licensed MIT. It adds 269 tokens to every session and 6,222 once invoked, about $0.0011 per session on Opus 5.5. 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.
esp32s3-cam-40pin compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| esp32s3-cam-40pinalexex1993/mcu-skills | Skill | 25 | 7d ago | MIT | A | 269 | Claude Code, Codex |
| holoscan-install-wheelNVIDIA/skills | Skill | 3.9k | yesterday | Apache-2.0 | A | 34 | Claude Code, Codex |
| doca-argpNVIDIA/skills | Skill | 3.9k | yesterday | Apache-2.0 | A | 277 | Claude Code, Codex |
| holoscan-module-lifecycleNVIDIA/skills | Skill | 3.9k | yesterday | Apache-2.0 | A | 47 | Claude Code, Codex |
| mspm0-skillIbook000/mspm0-skill | Skill | 13 | 1mo ago | MIT | A | 76 | Claude Code, Codex |
| keymap-aijohncattrall/keymap-ai | Skill | 24 | 1mo ago | MIT | A | 146 | Claude Code, Codex |
| arduino-code-generatorwedsamuel1230/arduino-skills | Skill | 24 | 2mo ago | MIT | A | 86 | Claude Code |