automotive-protocols

automotive-protocols is a skill for Claude Code, Codex from pangzhenying2025/hermes-automotive-skills. It costs 45 tokens per session (21,509 once invoked), scanned A, original, MIT.

A reference guide to automotive networking standards, especially 100BASE-T1, which sends Ethernet data over one twisted-pair wire in vehicles.

In plain words
What is it for?
Use it when designing or reviewing in-vehicle networks, such as Ethernet, LIN, FlexRay, camera, display, or audio links.
Why use it?
It helps developers understand the specialised communication rules and safety standards used by vehicle electronics.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it when designing or reviewing in-vehicle networks, such as Ethernet, LIN, FlexRay, camera, display, or audio links.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/pangzhenying2025/hermes-automotive-skills/automotive-protocols
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 pangzhenying2025/hermes-automotive-skills --skill automotive-protocols
Clone the repo
git clone --depth 1 https://github.com/pangzhenying2025/hermes-automotive-skills

Made for: Claude Code, 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 automotive-protocols

README.md
[![agentmods](https://agentmods.dev/badge/skills/pangzhenying2025/hermes-automotive-skills/automotive-protocols/github.svg)](https://agentmods.dev/skills/pangzhenying2025/hermes-automotive-skills/automotive-protocols)
Your own site
<a href="https://agentmods.dev/skills/pangzhenying2025/hermes-automotive-skills/automotive-protocols"><img src="https://agentmods.dev/badge/skills/pangzhenying2025/hermes-automotive-skills/automotive-protocols/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 automotive-protocols

Your own site · 80×15
<a href="https://agentmods.dev/skills/pangzhenying2025/hermes-automotive-skills/automotive-protocols"><img src="https://agentmods.dev/badge/skills/pangzhenying2025/hermes-automotive-skills/automotive-protocols.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 21,509 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 $0.00045 $0.21509
Opus 5 $0.00023 $0.10755
Sonnet 5 $0.00009 $0.04302
Haiku 4.5 $0.00005 $0.02151

Measured 9d ago against content hash 50d9c22ae782, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

automotive-protocols 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.

skills/automotive-protocols/SKILL.md · 3,002 lines

How it starts

The opening of the file, as written. The whole thing — 3,002 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Automotive Protocols

8 skill files covering automotive-protocols domain.

Applicable Standards

  • AEC-Q100 (Automotive component qualification)
  • ANSI/TIA/EIA-644-A (LVDS Standard)
  • ASPICE Level 3
  • AUTOSAR 4.4
  • AUTOSAR LIN Driver
  • Automotive EMC compliance
  • BroadR-Reach specification
  • FPD-Link (Flat Panel Display Link)
  • IEEE 1722 AVTP (Audio Video Transport Protocol)
  • IEEE 802.1 AVB (Audio Video Bridging)
  • IEEE 802.1 TSN (Time-Sensitive Networking)
  • IEEE 802.3bw (100BASE-T1)
  • ISO 14230 (KWP2000 over MOST)
  • ISO 17458 (FlexRay Communications System)
  • ISO 17987 (LIN Specification)
  • ISO 26262 (Functional Safety)
  • ISO 26262 ASIL-D (Functional Safety)
  • LIN 2.2A specification
  • MIPI CSI-2 (Camera Serial Interface)
  • MOST Cooperation standard
  • MOST Specification Rev. 3.0
  • MOST150 (150 Mbps)
  • OPEN Alliance TC1 specification
  • OPEN Alliance TC8 specification
  • OpenLDI (Open LVDS Display Interface)
  • PSI5 Specification v2.3
  • SAE J2602
  • SAE J2716 (SENT Specification)
  • SOME/IP (Scalable service-Oriented MiddlewarE)

Instructions

BroadR-Reach Protocol

Core Competencies

Expert in BroadR-Reach physical layer for automotive Ethernet over single twisted pair.

Physical Layer Characteristics

  • Single unshielded twisted pair (UTP)
  • 100 Mbps full-duplex bidirectional
  • Cable length up to 15 meters (50 feet)
  • Voltage range: -2V to +2V differential
  • PAM3 (3-level Pulse Amplitude Modulation) encoding
  • Frequency: 33.33 MHz fundamental

Cable Requirements

  • Unshielded twisted pair (UTP)
  • AWG 24-26 gauge typical
  • Impedance: 100 ohms ±15%
  • Capacitance: <60 pF/m
  • Low crosstalk for bundled cables
  • Automotive temperature range (-40°C to +125°C)

PHY Features

  • Auto-negotiation (ANEG)
  • Link partner detection
  • Cable diagnostics (TDR - Time Domain Reflectometry)
  • Sleep/wake functionality
  • EMI/EMC compliance for automotive
  • Power over Data Line (PoDL) support

Connector Types

  • FAKRA coaxial connector (legacy)
  • USCAR connector
  • Rosenberger HFM connector
  • Amphenol Mini50 connector
  • Automotive-grade shielding

Read the full file on GitHub · 3,002 lines

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. 9d ago First seen · 3,002 lines · 45 tokens per session scan A 50d9c22ae782

Subscribe to this mod's changes

automotive-protocols is a skill published in the GitHub repository pangzhenying2025/hermes-automotive-skills (5 stars, last pushed 3mo ago), licensed MIT. It adds 45 tokens to every session and 21,509 once invoked, about $0.0002 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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