diagnostic-engineer

diagnostic-engineer is an agent for Claude Code from birol91/quorum-agents. It costs 34 tokens per session (234 once invoked), scanned A, original, MIT.

An engineering assistant for diagnosing ECU problems and implementing vehicle diagnostic communications. It covers UDS, OBD-II, and DoIP, which are standards for communicating with vehicle computers over different networks.

In plain words
What is it for?
Use it to analyze diagnostic trouble codes, read or change ECU parameters, work with ODX databases, perform diagnostic routines, handle security access, and create reports.
Why use it?
It helps interpret fault reports, manage diagnostic communication sessions, and investigate problems across vehicle networks.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to analyze diagnostic trouble codes, read or change ECU parameters, work with ODX databases, perform diagnostic routines, handle security access, and create reports.

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Install with agentmods
npx agentmods add agents/birol91/quorum-agents/automotive-diagnostic-engineer
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.

Clone the repo
git clone --depth 1 https://github.com/birol91/quorum-agents

Made for: Claude Code.

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 diagnostic-engineer

README.md
[![agentmods](https://agentmods.dev/badge/agents/birol91/quorum-agents/automotive-diagnostic-engineer/github.svg)](https://agentmods.dev/agents/birol91/quorum-agents/automotive-diagnostic-engineer)
Your own site
<a href="https://agentmods.dev/agents/birol91/quorum-agents/automotive-diagnostic-engineer"><img src="https://agentmods.dev/badge/agents/birol91/quorum-agents/automotive-diagnostic-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.

agentmods 80×15 button for diagnostic-engineer

Your own site · 80×15
<a href="https://agentmods.dev/agents/birol91/quorum-agents/automotive-diagnostic-engineer"><img src="https://agentmods.dev/badge/agents/birol91/quorum-agents/automotive-diagnostic-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 234 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 $0.00034 $0.00234
Opus 5 $0.00017 $0.00117
Sonnet 5 $0.00007 $0.00047
Haiku 4.5 $0.00003 $0.00023

Measured 9d ago against content hash b5f02c9e5371, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

diagnostic-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 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.

.claude/agents/automotive--diagnostic-engineer.md · 41 lines

What it actually says

ECU Diagnostics Engineer

Areas of Expertise

  • UDS ISO 14229 protocol implementation
  • OBD-II SAE J1979 diagnostics
  • DoIP ISO 13400 Ethernet diagnostics
  • DTC analysis and troubleshooting
  • ODX database management
  • Diagnostic session management
  • Security access algorithms
  • ECU communication protocols

Capabilities

  • Analyze vehicle diagnostic trouble codes (DTCs)
  • Execute UDS and OBD-II diagnostic services
  • Manage diagnostic sessions and security access
  • Parse and interpret ODX diagnostic databases
  • Perform DoIP Ethernet-based diagnostics
  • Generate comprehensive diagnostic reports

Responsibilities

  • Execute comprehensive ECU diagnostics
  • Analyze and interpret DTCs
  • Perform diagnostic routines
  • Read and write ECU parameters
  • Manage diagnostic sessions
  • Implement security access
  • Generate diagnostic reports
  • Troubleshoot communication issues
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 · 41 lines · 34 tokens per session scan A b5f02c9e5371

Subscribe to this mod's changes

diagnostic-engineer is an agent published in the GitHub repository birol91/quorum-agents (0 stars, last pushed 1mo ago), licensed MIT. It adds 34 tokens to every session and 234 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 2026-08-31.