archguardian: Instructions file for GitHub Copilot

.github/copilot-instructions.md

archguardian copilot-instructions.md is an instructions file for GitHub Copilot from ysfAskri/archguardian. It costs 752 tokens per session, scanned A, original, MIT.

Project instructions for Archguardian, a code checker that looks for security issues, AI-generated code smells, naming problems, duplicate code, and violations of architectural layers. It supports TypeScript, JavaScript, Python, Go, Rust, and Java.

In plain words
What is it for?
Use it to configure, build, test, type-check, and work on Archguardian. The project includes analyzers, parsers, Git hooks, metrics, plugins, and fixers.
Why use it?
It helps find code-quality and structure problems before they reach later review or production. It can also report results in terminal, JSON, or SARIF formats and supports selected automatic fixes.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is ysfAskri/archguardian's own configuration. It tells GitHub Copilot how to work on archguardian itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything archguardian configures →

Reuse

Borrowing it

Nothing to install: this file belongs to ysfAskri/archguardian. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/ysfAskri/archguardian/master/.github/copilot-instructions.md
Clone the repo
git clone --depth 1 https://github.com/ysfAskri/archguardian

Made for: GitHub Copilot.

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 archguardian copilot-instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/ysfaskri/archguardian/copilot-instructions/github.svg)](https://agentmods.dev/instructions/ysfaskri/archguardian/copilot-instructions)
Your own site
<a href="https://agentmods.dev/instructions/ysfaskri/archguardian/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/ysfaskri/archguardian/copilot-instructions/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 archguardian copilot-instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/ysfaskri/archguardian/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/ysfaskri/archguardian/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 752 This file is loaded in full into every session.
When invoked 752 The same file — it is already loaded in full.
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 $0.00752 $0.00752
Opus 5.5 $0.00301 $0.00301
Sonnet 5.5 $0.00150 $0.00150
Haiku 4.5 $0.00075 $0.00075

Measured 1mo ago against content hash 0d52015ad258, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

archguardian copilot-instructions.md 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.

.github/copilot-instructions.md · 71 lines

How it starts

The opening of the file, as written. The whole thing — 71 lines — stays where its author put it; the contents beside it link to each section on GitHub.

archguardian

Pre-commit hook and CLI that catches security issues, AI-generated code smells, naming convention violations, code duplication, and architecture layer breaches. Works with TypeScript, JavaScript, Python, Go, Rust, and Java.

Project structure

src/
├── cli/          Commander.js entry, 8 commands, output formatters (terminal, JSON, SARIF)
├── core/         Pipeline orchestrator, config loader, diff parser, suppression directives, baseline mode, types
├── parsers/      ast-grep NAPI parser (TS/JS/Python/Go/Rust/Java) + AST utilities
├── analyzers/    Security, AI smells, conventions, duplicates, layer violations
├── plugins/      Dynamic plugin loader for external analyzers
├── llm/          LLM client (OpenAI, Anthropic, Gemini), prompt builder, file-based cache
├── fixers/       Auto-fix engine (remove unused imports, rename conventions)
├── metrics/      Run history tracker (.archguard/metrics.json)
├── hooks/        Git hook installer (direct + Husky)
└── utils/        Git operations, logging, perf timing

Build & test

  • npm run build — tsup → dist/
  • npm test — vitest (165 tests across unit, integration, e2e)
  • npm run typecheck — tsc --noEmit

Key conventions

  • ESM-only ("type": "module"), all imports use .js extensions
  • Node >= 18 required
  • AST parsing via ast-grep NAPI (native tree-sitter bindings, not WASM)
  • Tests in tests/unit/, tests/integration/, tests/e2e/ using vitest
  • Config file: .archguard.yml validated with Zod schemas
  • Pipeline: analyzers run in parallel → deduplicate → suppress inline → filter baseline → optional LLM enhance

CLI commands

archguardian init                                 Create config + install git hook
archguardian check [--format] [--update-baseline] Analyze staged changes
archguardian scan  [--format] [--update-baseline] Analyze full project
archguardian fix   [--dry-run]                    Auto-fix simple findings
archguardian learn [--apply]                      Infer conventions from codebase
archguardian rules [--json]                       List all built-in rules
archguardian metrics [--json]                     Show findings trend
archguardian dashboard [--port]                   Open web dashboard

Read the full file on GitHub · 71 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. 1mo ago First seen · 71 lines · 752 tokens per session scan A 0d52015ad258

Subscribe to this mod's changes

archguardian copilot-instructions.md is an instructions file published in the GitHub repository ysfAskri/archguardian (4 stars, last pushed 8mo ago), licensed MIT. It adds 752 tokens to every session, about $0.0030 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.

Related

Other instructions, from other repositories

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 9,715 tokens

next.js AGENTS.md

AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

vercel/next.js · 7,786 tokens

vscode oss-third-party-notices.instructions.md

Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).

microsoft/vscode · 5,262 tokens

langchain AGENTS.md

AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.

langchain-ai/langchain · 4,680 tokens

vscode copilot-instructions.md

Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).

microsoft/vscode · 2,731 tokens

deno copilot-instructions.md

Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.

denoland/deno · 3,077 tokens