engineering-principles

engineering-principles is a skill for Claude Code, Codex from Azure/GPT-RAG. It costs 34 tokens per session (179 once invoked), scanned A, original, MIT.

A set of engineering guidelines for building and maintaining a GPT-RAG application, which combines GPT with search over trusted documents.

In plain words
What is it for?
It is used when designing, reviewing, refactoring, securing, testing, or operating the application, including its Azure integration.
Why use it?
It helps developers choose appropriate design, security, testing, and operational practices without treating the guidelines as a substitute for the codebase or its requirements.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/azure/gpt-rag/engineering-principles
Any agent
npx skills add Azure/GPT-RAG --skill engineering-principles
Clone the repo
git clone --depth 1 https://github.com/Azure/GPT-RAG

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 engineering-principles

README.md
[![agentmods](https://agentmods.dev/badge/skills/azure/gpt-rag/engineering-principles.svg)](https://agentmods.dev/skills/azure/gpt-rag/engineering-principles)
Your own site
<a href="https://agentmods.dev/skills/azure/gpt-rag/engineering-principles"><img src="https://agentmods.dev/badge/skills/azure/gpt-rag/engineering-principles.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 179 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00034 $0.00179
Opus 5 $0.00017 $0.00089
Sonnet 5 $0.00007 $0.00036
Haiku 4.5 $0.00003 $0.00018

Measured 4d ago against content hash c06a22399a4a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

engineering-principles 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 4d 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.

.github/skills/engineering-principles/SKILL.md · 19 lines

What it actually says

GPT-RAG engineering principles

Load only the references needed for the task:

When the task involves Read
Repository purpose, boundaries, components, or Azure architecture GPT-RAG architecture
Tests, validation, compatibility, or evidence Testing and evidence
Identity, secrets, networking, retrieval security, or operations Security and operations

Use these principles as design questions rather than dogma. The task requirements, executable configuration, versioned contracts, and current implementation remain the sources of truth.

Files

What ships with it

3 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. 4d ago First seen · 19 lines · 34 tokens per session scan A c06a22399a4a

Subscribe to this mod's changes

engineering-principles is a skill published in the GitHub repository Azure/GPT-RAG (1,170 stars, last pushed today), licensed MIT. It adds 34 tokens to every session and 179 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 2026-08-30.

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