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devoxx-2026: Instructions file for GitHub Copilot

.github/copilot-instructions.md

devoxx-2026 copilot-instructions.md is an instructions file for GitHub Copilot from b-fontaine/devoxx-2026. It costs 218 tokens per session, scanned A, original, MIT.

Project-specific guidance for GitHub Copilot while working on an anomaly-reporting application built with Flutter and Rust. It describes the project structure, coding conventions, tests, and required checks.

In plain words
What is it for?
Use it when adding or changing Flutter screens, Rust services, domain logic, or tests. It directs the work from BDD feature files—plain-language test scenarios—through implementation and verification.
Why use it?
It helps an AI coding assistant follow the project's existing design and development process instead of suggesting code that conflicts with it.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file. Also seen: mentions AGENTS.md.

This is b-fontaine/devoxx-2026's own configuration. It tells GitHub Copilot how to work on devoxx-2026 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 devoxx-2026 configures →

not rated 5repo 6mo ago A scan 218 tokens original MIT
View source ↗ b-fontaine/devoxx-2026
Reuse

Borrowing it

Nothing to install: this file belongs to b-fontaine/devoxx-2026. 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/b-fontaine/devoxx-2026/main/.github/copilot-instructions.md
Clone the repo
git clone --depth 1 https://github.com/b-fontaine/devoxx-2026

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 devoxx-2026 copilot-instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/b-fontaine/devoxx-2026/copilot-instructions/github.svg)](https://agentmods.dev/instructions/b-fontaine/devoxx-2026/copilot-instructions)
Your own site
<a href="https://agentmods.dev/instructions/b-fontaine/devoxx-2026/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/b-fontaine/devoxx-2026/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 devoxx-2026 copilot-instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/b-fontaine/devoxx-2026/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/b-fontaine/devoxx-2026/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 218 This file is loaded in full into every session.
When invoked 218 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 $0.00218 $0.00218
Opus 5.5 $0.00087 $0.00087
Sonnet 5.5 $0.00044 $0.00044
Haiku 4.5 $0.00022 $0.00022

Measured 2mo ago against content hash de281fe69316, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

devoxx-2026 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 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.

.github/copilot-instructions.md · 24 lines

What it actually says

Copilot Instructions — Projet Anomaly Reporter

Ce fichier configure GitHub Copilot pour ce projet. Pour les instructions partagées cross-agents, voir AGENTS.md à la racine.

Architecture

Ce projet suit une Clean Architecture (Flutter) et une Architecture Hexagonale (Rust). Les règles de dépendance et conventions sont définies dans AGENTS.md.

Conventions clés (résumé de AGENTS.md)

  • Frontend Flutter : flutter_bloc, get_it + injectable, Either<Failure, T> via dartz
  • Backend Rust : axum + serde_json (REST/JSON), sea-orm, Result<T, DomainError>
  • Tests BDD avec fichiers .feature Gherkin
  • Dépendances vers l'intérieur uniquement (domain ne dépend de rien)
  • TDD : écrire le test avant l'implémentation

Workflow

  1. Lire le .feature BDD concerné
  2. Implémenter domain/ d'abord
  3. Vérifier : flutter test + dart analyze + cargo test + cargo clippy
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 · 24 lines · 218 tokens per session scan A de281fe69316

Subscribe to this mod's changes

devoxx-2026 copilot-instructions.md is an instructions file published in the GitHub repository b-fontaine/devoxx-2026 (5 stars, last pushed 6mo ago), licensed MIT. It adds 218 tokens to every session, about $0.0009 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.

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