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 mohitmishra786/low-level-dev-skills --skill resource-optimization-lowendgit clone --depth 1 https://github.com/mohitmishra786/low-level-dev-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/mohitmishra786/low-level-dev-skills/resource-optimization-lowend)<a href="https://agentmods.dev/skills/mohitmishra786/low-level-dev-skills/resource-optimization-lowend"><img src="https://agentmods.dev/badge/skills/mohitmishra786/low-level-dev-skills/resource-optimization-lowend/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/mohitmishra786/low-level-dev-skills/resource-optimization-lowend"><img src="https://agentmods.dev/badge/skills/mohitmishra786/low-level-dev-skills/resource-optimization-lowend.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 | $0.00067 | $0.00897 |
| Opus 5 | $0.00034 | $0.00449 |
| Sonnet 5 | $0.00013 | $0.00179 |
| Haiku 4.5 | $0.00007 | $0.00090 |
Grade A, and why
resource-optimization-lowend 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 9d 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 — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Resource Optimization (Low-End Systems)
Purpose
Guide agents through flash and RAM optimization on constrained devices: compiler size flags, linker map analysis, stack usage measurement, dead code elimination, and size-vs-speed tradeoffs — for bare-metal and small RTOS images.
When to Use
- Firmware exceeds flash budget
- Stack overflow in production only
- Choosing
-Osvs-O2on MCU - Finding unexpected
.rodataor.bssgrowth
Workflow
1. Size measurement toolchain
arm-none-eabi-size -A firmware.elf
arm-none-eabi-objdump -h firmware.elf
nm --size-sort -S firmware.elf | tail -20
2. Linker map file
/* linker.ld */
OUTPUT_FORMAT("elf32-littlearm")
ENTRY(Reset_Handler)
SECTIONS
{
/* ... */
}
/* Generate map */
/* gcc ... -Wl,-Map=firmware.map */
grep -E '\.text|\.rodata|\.data|\.bss' firmware.map | head
Identify largest symbols and unexpected library pull-in.
3. Compiler flags
| Flag | Effect |
|---|---|
-Os |
Size-first optimization |
-ffunction-sections -fdata-sections |
Per-symbol sections |
-Wl,--gc-sections |
Drop unused sections |
-flto |
Cross-TU dead code elimination |
-specs=nano.specs |
Smaller newlib (GCC ARM) |
CFLAGS += -Os -ffunction-sections -fdata-sections
LDFLAGS += -Wl,--gc-sections -Wl,--print-memory-usage
4. Stack analysis
# Static (if built with -fstack-usage)
find . -name '*.su' -exec cat {} \;
# Linker stack symbol
grep _estack firmware.map
Runtime: fill stack with pattern (0xDEADBEEF), run tests, scan high-water mark. FreeRTOS: uxTaskGetStackHighWaterMark.
5. RAM categories
| Section | Tactic |
|---|---|
.bss |
Shrink buffers; pool allocators |
.data |
Move const to flash (const → .rodata) |
| Heap | Avoid malloc; fixed pools |
| Stack | Reduce nesting; smaller ISR stacks |
6. Size vs speed decision
Hot path in ISR or 1 kHz loop?
├── Yes → -O2 for that file (#pragma GCC optimize)
└── No → -Os globally
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.
- 9d ago First seen · 117 lines · 67 tokens per session scan A db44ea86ac1b
resource-optimization-lowend is a skill published in the GitHub repository mohitmishra786/low-level-dev-skills (203 stars, last pushed 2mo ago), licensed MIT. It adds 67 tokens to every session and 897 once invoked, about $0.0003 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 2026-09-03.
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