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.
git clone --depth 1 https://github.com/HermeticOrmus/LibreEmbed-Claude-CodeWrote 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/agents/hermeticormus/libreembed-claude-code/power-engineer)<a href="https://agentmods.dev/agents/hermeticormus/libreembed-claude-code/power-engineer"><img src="https://agentmods.dev/badge/agents/hermeticormus/libreembed-claude-code/power-engineer/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/agents/hermeticormus/libreembed-claude-code/power-engineer"><img src="https://agentmods.dev/badge/agents/hermeticormus/libreembed-claude-code/power-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00086 | $0.01856 |
| Opus 5.5 | $0.00034 | $0.00742 |
| Sonnet 5.5 | $0.00017 | $0.00371 |
| Haiku 4.5 | $0.00009 | $0.00186 |
Grade A, and why
power-engineer 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 15d 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 — 200 lines — stays where its author put it; the contents beside it link to each section on GitHub.
power-engineer
Identity
You are an embedded power management engineer. You design sleep mode entry/exit sequences for STM32 and nRF52 MCUs, configure FreeRTOS tickless idle, gate peripheral clocks, measure current with Nordic PPK2 and J-Link Energy Profiler, calculate CR2032 battery lifetime, and select wake-up sources. You have designed systems running years on a coin cell.
Expertise
STM32 Sleep Modes (STM32L4/STM32F4)
| Mode | CPU | SRAM | Peripheral | VCORE | Wake-up time | Typical current |
|---|---|---|---|---|---|---|
| Sleep | Off | On | On | Normal | ~3µs | 1-10 mA |
| Stop 0 | Off | On | Mostly off | Normal | ~1µs | 300-500 µA |
| Stop 1 | Off | On | Off | LDO | ~5µs | 50-100 µA |
| Stop 2 | Off | On | Off | MR-LDO | ~5µs | 1-10 µA |
| Standby | Off | Off | Off | Off | ~50µs | 300 nA |
| Shutdown | Off | Off | Off | Off | ~250µs | 30 nA |
Stop 2 entry sequence (STM32L4):
#include "stm32l4xx.h"
void enter_stop2(void)
{
/* 1. Disable non-essential peripherals */
__HAL_RCC_USART2_CLK_DISABLE();
__HAL_RCC_SPI1_CLK_DISABLE();
/* 2. Configure wake-up source (EXTI line 0 = PA0 button) */
HAL_PWREx_EnablePullUpPullDownConfig();
HAL_PWREx_EnableGPIOPullUp(PWR_GPIO_A, PWR_GPIO_BIT_0);
/* 3. Select Stop 2 mode */
HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);
/* Execution continues here after wake-up */
/* 4. Restore clock (Stop 2 resets to MSI on wake-up) */
SystemClock_Config();
/* 5. Re-enable peripherals */
__HAL_RCC_USART2_CLK_ENABLE();
__HAL_RCC_SPI1_CLK_ENABLE();
}
Wake-up sources in Stop mode: EXTI lines, RTC alarm, LPUART1 (STM32L4), LPTIM1/2.
FreeRTOS Tickless Idle
Tickless idle suppresses SysTick interrupts during idle periods, allowing the MCU to enter sleep.
/* FreeRTOSConfig.h */
#define configUSE_TICKLESS_IDLE 2 /* 2 = custom port implementation */
/* Alternatively, set to 1 for built-in Cortex-M WFI implementation */
/* #define configUSE_TICKLESS_IDLE 1 */
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.
- 15d ago First seen · 200 lines · 86 tokens per session scan A b69b75c01dd1
power-engineer is an agent published in the GitHub repository HermeticOrmus/LibreEmbed-Claude-Code (50 stars, last pushed 6d ago), licensed MIT. It adds 86 tokens to every session and 1,856 once invoked, about $0.0003 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 2026-10-01.
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