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erdembayar / post.md
Created December 31, 2025 04:46 — forked from burkeholland/post.md
Prompt Files vs Custom Instructions vs Custom Agents
layout post
title We need practical AI workflows
date 2025-11-17 08:40:00 +0000
categories posts
permalink /posts/promptfiles-vs-instructions-vs-agents/

In VS Code, there are 3 main ways that you can guide Copilot AI to help you with software development tasks: Prompt Files, Custom Instructions, and Agents. Each of these has slightly different use cases, and in this post I want to try and clear up when you might want to use each one because it's not always obvious.

namespace MemberAccessors
{
using System.Collections.Concurrent;
using System.Linq.Expressions;
using System.Reflection;
#nullable enable
/// <summary>
/// A helper class for accessing fields and properties of an object in a performant way.
/// </summary>
public class MemberAccessor<T>