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 beriberikix/zephyr-agent-skills --skill multicoregit clone --depth 1 https://github.com/beriberikix/zephyr-agent-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/beriberikix/zephyr-agent-skills/multicore)<a href="https://agentmods.dev/skills/beriberikix/zephyr-agent-skills/multicore"><img src="https://agentmods.dev/badge/skills/beriberikix/zephyr-agent-skills/multicore/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/beriberikix/zephyr-agent-skills/multicore"><img src="https://agentmods.dev/badge/skills/beriberikix/zephyr-agent-skills/multicore.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 | $0.00070 | $0.00892 |
| Opus 5.5 | $0.00028 | $0.00357 |
| Sonnet 5.5 | $0.00014 | $0.00178 |
| Haiku 4.5 | $0.00007 | $0.00089 |
Grade A, and why
multicore 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 1mo 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 — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Zephyr Multicore Development
Leverage multiple CPU cores to increase performance, isolate critical tasks, and integrate heterogeneous systems.
Core Workflows
1. SMP Configuration
Run the Zephyr kernel and your threads across multiple identical cores.
- Reference: smp_configuration.md
- Key Tools:
CONFIG_SMP,k_spinlock, Thread Affinity.
2. OpenAMP & RPMsg
Communicate between heterogeneous cores (e.g., A-series and M-series) using standard protocols.
- Reference: openamp_rpmsg.md
- Key Tools:
CONFIG_OPENAMP, message vrings, Resource Tables.
3. IPC Patterns
Implement efficient data exchange between cores using high-level services or low-level mailboxes.
- Reference: ipc_patterns.md
- Key Tools:
IPC Service, IPM drivers, Shared Memory.
4. LLEXT (Linkable Extensions)
Dynamically load and run binary modules at runtime without a full firmware update.
- Reference: llext_basics.md
- Key Tools:
CONFIG_LLEXT, dynamic ELF loading, Symbol Export.
5. Multi-domain SoCs (nRF5340)
Build separate application-core and network-core images in one Sysbuild invocation.
- Reference: multidomain_sysbuild.md
- Key Tools:
west build --sysbuild,CONFIG_NRF53_BOOT_NETWORK_CORE_ON_STARTUP, domains.
Quick Start (SMP prj.conf)
# Enable SMP for dual-core SoCs
CONFIG_SMP=y
CONFIG_MP_NUM_CPUS=2
// Using spinlocks for cross-core sync
struct k_spinlock lock;
k_spinlock_key_t key = k_spin_lock(&lock);
// ... critical section ...
k_spin_unlock(&lock, key);
Professional Patterns (Architecture Design)
- Linux Bridging: Use OpenAMP/RPMsg to bridge Zephyr real-time logic with a Linux application controller.
- Core Isolation: Pin high-frequency interrupts (e.g., motor control) to Core 1 and keep the main application on Core 0 to prevent jitter.
- Zero-Copy Transfers: Use shared memory regions for large data (video/audio) and only pass meta-data via IPC channels to minimize overhead.
What ships with it
8 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.
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.
- 1mo ago First seen · 80 lines · 70 tokens per session scan A 62a8bf92f3ce
multicore is a skill published in the GitHub repository beriberikix/zephyr-agent-skills (72 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 70 tokens to every session and 892 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 2026-08-30.
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