--- title: Build Reusable Copilot Workflows with Skills and Agents description: A walkthrough video demonstrates how to use GitHub Copilot's skills, agent personas, and plugin marketplaces to automate a repeatable workflow. Two Microsoft... canonical: https://daily.dev/posts/build-reusable-copilot-workflows-with-skills-and-agents-hddwdhna7 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Build Reusable Copilot Workflows with Skills and Agents | daily.dev og:description: A walkthrough video demonstrates how to use GitHub Copilot's skills, agent personas, and plugin marketplaces to automate a repeatable workflow. Two Microsoft... og:url: https://daily.dev/posts/build-reusable-copilot-workflows-with-skills-and-agents-hddwdhna7 og:image: https://api.daily.dev/og/posts/hDDwdHnA7.png og:image:alt: Build Reusable Copilot Workflows with Skills and Agents og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Build Reusable Copilot Workflows with Skills and Agents **[Microsoft Developer](https://daily.dev/sources/microsoftdeveloper)** · 21 min read · 1 upvotes · 0 comments ## Summary A walkthrough video demonstrates how to use GitHub Copilot's skills, agent personas, and plugin marketplaces to automate a repeatable workflow. Two Microsoft engineers show how to package a multi-step blog-posting process (draft from notes, critique with a built-in 'rubber duck' persona, convert to HTML, commit and push to GitHub) into a reusable skill.md file, then demonstrate invoking that skill in a fresh session, installing a marketplace plugin for resume-to-website syncing, and distinguishing repo-level versus global skills. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is a skill.md file in GitHub Copilot and how does it work? A skill.md file is a markdown document that defines a sequence of steps forming a repeatable workflow for a Copilot agent to follow, such as drafting a blog post, critiquing it, converting it to HTML, and publishing it to GitHub. It can be stored in a project folder or globally, shared with others, and newer models can pick up relevant skills automatically just from prompt context without explicitly invoking them by name. _Developers building repeatable Copilot workflows can find deeper explainers and follow-up guides on daily.dev._ ### What is the rubber duck agent persona in GitHub Copilot? The rubber duck agent is a built-in Copilot persona that acts as a low-trust critic, reading back a draft or reasoning to surface holes, mistakes, or missing considerations rather than assuming the user's input is correct. It mirrors the classic programming rubber-duck-debugging technique, where explaining code or reasoning aloud helps reveal flaws, and is used as a second-opinion review step before publishing content. _Anyone experimenting with agent personas for review workflows can track new Copilot capabilities on daily.dev._ ### How do plugin marketplaces work for GitHub Copilot skills and agents? A Copilot plugin marketplace is a GitHub repository containing a marketplace file that bundles shareable skills and agent personas; adding the repository URL under Copilot's plugin settings lets you browse and install skills created by other developers, such as one that syncs a portfolio website with an updated resume. Installed skills can be global, working across every repo, or scoped to a single project. _Developers comparing Copilot plugin options for their own agent setups can keep up with marketplace changes on daily.dev._ ## Similar posts on daily.dev - [How to use GitHub Copilot Agent Skills in Visual Studio](https://daily.dev/posts/how-to-use-github-copilot-agent-skills-in-visual-studio-hbtqkum6o) · The Art of Simplicity · 2 upvotes · 0 comments - [Agent Skills in Visual Studio: Teach Copilot How Your Team Works](https://daily.dev/posts/agent-skills-in-visual-studio-teach-copilot-how-your-team-works-lmmgkfo2p) · Visual Studio Blog · 16 upvotes · 0 comments - [Can’t use Claude at work? How I recreated “Skills” in GitHub Copilot](https://daily.dev/posts/can-t-use-claude-at-work-how-i-recreated-skills-in-github-copilot-fw7azchj6) · LogRocket · 3 upvotes · 0 comments --- Tags: [#devtools](https://daily.dev/tags/devtools), [#github](https://daily.dev/tags/github), [#ai-agents](https://daily.dev/tags/ai-agents), [#prompt-engineering](https://daily.dev/tags/prompt-engineering) [View this post on daily.dev](https://daily.dev/posts/build-reusable-copilot-workflows-with-skills-and-agents-hddwdhna7) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Build Reusable Copilot Workflows with Skills and Agents","url":"https://daily.dev/posts/build-reusable-copilot-workflows-with-skills-and-agents-hddwdhna7","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/build-reusable-copilot-workflows-with-skills-and-agents-hddwdhna7"},"datePublished":"2026-08-21T19:14:19.690Z","dateModified":"2026-09-14T09:13:46.085Z","description":"A walkthrough video demonstrates how to use GitHub Copilot's skills, agent personas, and plugin marketplaces to automate a repeatable workflow. 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