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yocto-security-ota

yocto-security-ota is a skill for Codex from prashantdivate/awesome-yocto-ai-agent-skills. It costs 93 tokens per session (344 once invoked), scanned A, original, MIT.

A guide for securing Yocto-based embedded Linux systems and planning software updates sent to devices. Yocto is a tool for building custom Linux images for embedded hardware.

In plain words
What is it for?
It supports checks for CVEs, licenses, firewalls, SSH, secure boot, signed updates, software inventories, and update systems such as RAUC, Mender, SWUpdate, and OSTree.
Why use it?
It helps identify security risks, known vulnerable packages, unsafe services, and missing recovery steps before devices are shipped or updated.

Skill for Codex

Written for Codex: agents/openai.yaml present.

not rated 4repo 4mo ago A scan 93 tokens original MIT

Good fit It supports checks for CVEs, licenses, firewalls, SSH, secure boot, signed updates, software inventories, and update systems such as RAUC, Mender, SWUpdate, and OSTree.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/prashantdivate/awesome-yocto-ai-agent-skills/yocto-security-ota
View source ↗ prashantdivate/awesome-yocto-ai-agent-skills
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 prashantdivate/awesome-yocto-ai-agent-skills --skill yocto-security-ota
Clone the repo
git clone --depth 1 https://github.com/prashantdivate/awesome-yocto-ai-agent-skills

Made for: Codex.

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 yocto-security-ota

README.md
[![agentmods](https://agentmods.dev/badge/skills/prashantdivate/awesome-yocto-ai-agent-skills/yocto-security-ota/github.svg)](https://agentmods.dev/skills/prashantdivate/awesome-yocto-ai-agent-skills/yocto-security-ota)
Your own site
<a href="https://agentmods.dev/skills/prashantdivate/awesome-yocto-ai-agent-skills/yocto-security-ota"><img src="https://agentmods.dev/badge/skills/prashantdivate/awesome-yocto-ai-agent-skills/yocto-security-ota/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 yocto-security-ota

Your own site · 80×15
<a href="https://agentmods.dev/skills/prashantdivate/awesome-yocto-ai-agent-skills/yocto-security-ota"><img src="https://agentmods.dev/badge/skills/prashantdivate/awesome-yocto-ai-agent-skills/yocto-security-ota.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 93 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 344 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 $0.00093 $0.00344
Opus 5.5 $0.00037 $0.00138
Sonnet 5.5 $0.00019 $0.00069
Haiku 4.5 $0.00009 $0.00034

Measured 2mo ago against content hash 410a692e2778, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

yocto-security-ota 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 2mo 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.

yocto-security-ota/SKILL.md · 27 lines

What it actually says

Yocto Security OTA

Workflow

  1. Identify threat model, update model, physical access assumptions, recovery path, and regulatory constraints.
  2. Inspect image package set, enabled services, network listeners, users, credentials, SSH policy, firewall, and debug features.
  3. Check Yocto release security status, CVE tooling, license manifests, and SBOM/SPDX output.
  4. Select update strategy: full image, package feed, A/B slots, bootloader-managed rollback, OSTree, RAUC, Mender, SWUpdate, or vendor OTA.
  5. Tie secure boot and artifact signing to key management and manufacturing flows.
  6. Verify with boot tests, rollback tests, power-cut tests, and update failure tests.

References

Guardrails

  • Do not promise security from package removal alone.
  • Do not add firewall rules without documenting network services and default policy.
  • Do not recommend OTA updates without rollback and recovery planning.
  • Do not put signing keys, credentials, or production secrets in layers or CI logs.
Files

What ships with it

2 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.

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. 2mo ago First seen · 27 lines · 93 tokens per session scan A 410a692e2778

Subscribe to this mod's changes

yocto-security-ota is a skill published in the GitHub repository prashantdivate/awesome-yocto-ai-agent-skills (4 stars, last pushed 4mo ago), licensed MIT. It adds 93 tokens to every session and 344 once invoked, about $0.0004 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 2026-08-31.

Hardware and IoTSecurityagent-skillsai-agentsai-coding-assistantbitbakebspbuild-system
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