How real projects brief GitHub Copilot, from .github/copilot-instructions.md.
Microsoft AzureCopilot instructionsAzure/azure-powershell/.github/copilot-instructions.md
Azure PowerShell is a collection of 200+ PowerShell modules for managing Azure resources. The repository contains modules with two types of projects: SDK-based projects and AutoRest-generated projects, all built using…
MicrosoftCopilot instructionsmicrosoft/msquic/.github/copilot-instructions.md
MsQuic is Microsoft's cross-platform C implementation of the IETF QUIC protocol. It also has C++ API wrappers and Rust/C# interop layers. The codebase targets Windows (user & kernel mode), Linux, macOS, and FreeBSD. The primary language is C (C17), with C++ (C17) for tests/tools, Rust bindings, and C# interop. Build system: CMake + PowerShell scripts. Key files: CMakeLists.txt (root build), version.json (version info), .clang-format (C/C++ style), src/.editorconfig (editor settings), Cargo.toml (Rust crate config), rust-toolchain.toml (Rust 1.93.1). Always use PowerShell 7+…
MicrosoftCopilot instructionsmicrosoft/perfview/.github/copilot-instructions.md
PerfView is a Windows performance-analysis tool for investigating CPU and memory issues, built on the TraceEvent library for parsing ETW and EventPipe trace data. The solution (PerfView.sln) contains the WPF GUI application, the cross-platform TraceEvent library, and several supporting libraries. Follow existing patterns — when in doubt, match the surrounding code.
MicrosoftCopilot instructionsmicrosoft/WindowsAppSDK/.github/copilot-instructions.md
Windows App SDK AI contributor guidance
MicrosoftCopilot instructionsmicrosoft/PyRIT/.github/copilot-instructions.md
PyRIT (Python Risk Identification Tool for generative AI) is an open-source framework for security professionals to proactively identify risks in generative AI systems. PyRIT uses a modular pluggable-brick design. doc/code/framework.md is the canonical reference for how these pieces fit together. It defines each component's responsibilities — what it owns and, critically, what it does not own — and how scenarios, attack techniques, executors, and the core/shared layers relate. Read it before adding or reviewing components so new code lands in…
Model Context ProtocolCopilot instructionsmodelcontextprotocol/csharp-sdk/.github/copilot-instructions.md
This repository contains the official C# SDK for the Model Context Protocol (MCP), enabling .NET applications to implement and interact with MCP clients and servers. This disclosure is not required…
crmneCopilot instructionscrmne/ruby_llm/.github/copilot-instructions.md
Use AGENTS.md and CONTRIBUTING.md as the source of truth for every change, review, and triage. AGENTS.md describes how the code is built and the boundaries Archspec.rb enforces; CONTRIBUTING.md describes what the project accepts. When they and this file disagree, they win. The four things every change is judged on, in order: the public API reads like Ruby a Rails developer already knows; persisted Rails records behave exactly like the plain-Ruby objects; providers and protocols stay in their layers with no…
MicrosoftCopilot instructionsmicrosoft/FLAML/.github/copilot-instructions.md
FLAML (Fast Library for Automated Machine Learning & Tuning) is a lightweight Python library for efficient automation of machine learning and AI operations. It automates workflow based on large language models, machine learning models, etc. and optimizes their performance. Key Components: The repository uses pre-commit hooks for:
MicrosoftCopilot instructionsmicrosoft/ApplicationInspector/.github/copilot-instructions.md
Microsoft Application Inspector is a source code characterization tool that identifies coding features based on well-known library/API calls using regex patterns and rules. It supports multiple programming languages and generates reports in HTML, JSON, SARIF, and text formats. Version Tracking: This project uses Nerdbank.GitVersioning (nbgv) for version tracking, which requires a deep clone of the repository. Shallow clones will not work correctly with version generation. NuGet Packages: The repository uses a custom nuget.config that points to a private Azure DevOps…
MongoDBCopilot instructionsmongodb/mongo-python-driver/.github/copilot-instructions.md
When reviewing code, focus on: Always prioritize security vulnerabilities and performance issues that could impact users. Always suggest changes to improve readability and testability. For example, this suggestion seeks to make the code more readable, reusable, and testable:
IvanMurzakCopilot instructionsIvanMurzak/Unity-MCP/.github/copilot-instructions.md
PROHIBITED: Using System.Reflection to access private, internal, or otherwise non-public fields, properties, methods, or classes in project code. This includes Type.GetType, BindingFlags.NonPublic, GetMethod, GetField, GetProperty, and similar reflection APIs when used to bypass access modifiers. Example of prohibited code: Note: This rule does NOT apply to ReflectorNet library usage, which is an external dependency specifically designed for reflection-based access patterns. Before performing any code review, you MUST read the project constitution: .specify/memory/constitution.md. All code review feedback must verify adherence to…
arcboxlabsCopilot instructionsarcboxlabs/arcbox/.github/copilot-instructions.md
ArcBox is a pure-Rust, high-performance container and VM runtime targeting macOS (primary) and Linux, aiming to surpass OrbStack's performance metrics. Three-tier structure: Key layers (bottom-up): Communication: Host <-> Guest via vsock and ArcBox protocol crates (arcbox-protocol, arcbox-grpc, arcbox-transport). Docker API compatibility is provided by arcbox-docker (Axum REST server + guest dockerd proxy). macOS specifics: Required for: examples, tests touching hypervisor. See arcbox.entitlements - modet types (e.g., libc::SIFMT) are u16 (Linux: u32). Use u32::from() for cross-platform compatibility - No fallocate -…
MicrosoftCopilot instructionsmicrosoft/skill-recorder/.github/copilot-instructions.md
Ongoing work in this repository lands on the current release branch, not main. Release branches are named release/<semver> — currently release/0.3.0, the highest-versioned release/* branch on origin. main trails the release branch and only advances when a version is cut and merged (see RELEASING.md). Unless a task explicitly says otherwise: Target main only for the release merge described in RELEASING.md.
nyldnCopilot instructionsnyldn/claude-octopus/.github/copilot-instructions.md
This repository is a Claude Code plugin that orchestrates multiple AI providers (Codex, Gemini, Claude, Perplexity, OpenRouter, and optionally Ollama) through structured Double Diamond workflows. Run the pre-push test suite: bash tests/run-all-tests.sh Run a single test: bash tests/unit/test-<name>.sh
MicrosoftCopilot instructionsmicrosoft/apm/.github/copilot-instructions.md
The CI Lint job is a hard gate. Mirror it locally before git push and before producing any artifact (PR body, release note, audit report) that claims CI is green. The Lint job runs (see .github/workflows/ci.yml): 1. uv run --extra dev ruff check src/ tests/ 2. uv run --extra dev ruff format --check src/ tests/ 3. YAML I/O safety guard (rejects raw yaml.dump(..., handle) outside utils/yaml_io.py; mark approved exceptions with # yaml-io-exempt). 4. File length guardrail (no src/*/.py may exceed…
MicrosoftCopilot instructionsmicrosoft/apm/packages/apm-contributor-dashboard/.github/copilot-instructions.md
This package ships a canvas extension. No agent instructions are needed.
MicrosoftCopilot instructionsmicrosoft/apm/packages/autopilot/autopilot-maintainer-canvas/.github/copilot-instructions.md
This package ships a canvas extension. No agent instructions are needed.
MicrosoftCopilot instructionsmicrosoft/apm/tests/integration/fixtures/target_resolution/s02b_copilot_instructions/.github/copilot-instructions.md
No summary in the file. Open it to read it.
yvgudeCopilot instructionsyvgude/lean-ctx/.github/copilot-instructions.md
lean-ctx shadow mode: native read/search/shell calls auto-route to ctx* — no tool-mapping needed. File editing → native Edit/StrReplace (lean-ctx only handles reads); if denied, use ctxpatch. Exclusive tools (no native trigger): ctxcompose (understand code, call first), ctxsearch(action=symbol) (exact symbol), ctxsearch(action=semantic) (by meaning), ctxcallgraph (callers), ctxknowledge / ctxsession (memory). <!-- lean-ctx-compression --> OUTPUT STYLE: expert-terse - Telegraph format: subject-verb-object, drop articles/prepositions - Symbolic vocabulary: → cause, ∵ because, ∴ therefore, ⊕ add, ⊖ remove, Δ change, ≈ similar, ≠ different, ∈…
MicrosoftCopilot instructionsmicrosoft/kiota/.github/copilot-instructions.md
This file defines repository-wide defaults for Copilot behavior. It is always applied. When modifying code generation or writer/refiner logic, treat schema-derived values as untrusted and ensure literal-context sanitization at the emission site. Use language/literal-appropriate sanitizers from src/Kiota.Builder/Writers/StringExtensions.cs (and Dart convention helpers where applicable). For writer changes that emit schema-derived text into generated code, ensure hostile content is escaped and covered by regression tests in tests/Kiota.Builder.Tests/Writers/. Before finishing implementation work:
Repository-wide instructions for GitHub Copilot, kept in .github/copilot-instructions.md.
How to build and test, the project's structure, and the conventions Copilot should follow in suggestions and reviews.
No. Copilot's coding agent also reads AGENTS.md, so many projects keep the shared rules there.
Open a file to see its discussion. Reports from people and their agents are coming.
