Ayan Gupta
65ba0b3922
* Add Java Modernization Studio canvas extension A canvas extension that drives the GitHub Copilot App Modernization for Java workflow from an interactive dashboard: environment readiness checks, repo assessment, prioritized plan/progress, validation gates (CVE scan, test generation), and one-click predefined-task runs — all grounded in the repo's real artifacts (.appmod/assessment.json, plan.md, progress.md). Includes a node:test suite (109 tests) for the grounding logic. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Signed-off-by: Ayan Gupta <74832088+ayangupt@users.noreply.github.com> * Secure cockpit loopback server with a per-instance token Address Copilot review feedback on the Java Modernization Studio canvas: - Mint a per-instance secret in createInstanceServer, embed it in the iframe URL, and validate it on every loopback request (/, /state, /events, /action). Other local processes can no longer read repo state or dispatch agent actions just by guessing the random port. Mirrors the existing diagram-viewer token pattern; the client echoes the token from its boot payload. The guard is a no-op when no token is set, so direct makeHandler unit tests are unaffected. - Handle async request-handler rejections in createServer with a .catch that returns 500 and logs, instead of leaking an unhandled rejection that could destabilize the extension process. - Tests: token guard 403s unauthenticated /, /state, /events and /action and allows valid-token requests; the end-to-end test asserts the tokenized URL and a tokenless 403. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * Fix CI: add preview screenshot and clear codespell hits Add the required assets/preview.png screenshot for the canvas-extension validator, and resolve two codespell findings in the cockpit: rename the planSim helper's `nd` variable to `notDone` and reword a catalog comment to avoid the `invokable`/`invocable` flag. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * Harden cockpit loopback server per Copilot review Address the second-round Copilot review comments on the loopback server: - broadcast(): drop an SSE client whose write() throws instead of keeping it in the Set, so a uncleanly-disconnected client can't cause repeated exceptions or leak dead entries on every subsequent broadcast. - POST /action: treat a malformed JSON body or a missing/invalid "kind" as a 400 client error (with an application/json body) instead of a 200 carrying { ok:false, error:"Unknown action: undefined" }. - Handler catch: set Content-Type: application/json on the 500 error response so it is consistent with the other JSON routes. Adds four tests covering dead-client eviction, the two 400 paths, and the JSON-typed 500. Full suite: 115 passing. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Signed-off-by: Ayan Gupta <74832088+ayangupt@users.noreply.github.com> * Add canvas.json gallery metadata for Java Modernization Studio Aaron requested a canvas.json so the awesome-copilot website/gallery can list this extension. Generated via `npm run website:data` (writePerExtensionCanvasManifests), which derives id/name/description/ version/keywords/screenshots from package.json + the createCanvas source + assets, and carries the author through. Output committed verbatim so a CI regeneration produces no diff. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Signed-off-by: Ayan Gupta <74832088+ayangupt@users.noreply.github.com> * Add author tag to package.json Declare the author in the package manifest (object form, matching the author already carried in canvas.json so it includes the profile URL). The published gallery sources author from canvas.json; this adds the conventional npm author tag to package.json for completeness. Verified `npm run website:data` still emits the author on the extensions record and leaves canvas.json byte-identical. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Signed-off-by: Ayan Gupta <74832088+ayangupt@users.noreply.github.com> --------- Signed-off-by: Ayan Gupta <74832088+ayangupt@users.noreply.github.com> Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
🤖 Awesome GitHub Copilot
A community-created collection of custom agents, instructions, skills, hooks, workflows, and plugins to supercharge your GitHub Copilot experience.
Tip
Explore the full collection on the website → awesome-copilot.github.com
The website offers full-text search and filtering across hundreds of resources, plus the Tools section for MCP servers and developer tooling, and the Learning Hub for guides and tutorials.
Using this collection in an AI agent? A machine-readable
llms.txtis available with structured listings of all agents, instructions, and skills.
📖 Learning Hub
New to GitHub Copilot customization? The Learning Hub on the website offers curated articles, walkthroughs, and reference material — covering everything from core concepts like agents, skills, and instructions to hands-on guides for hooks, agentic workflows, MCP servers, and the Copilot coding agent.
What's in this repo
| Resource | Description | Browse |
|---|---|---|
| 🤖 Agents | Specialized Copilot agents that integrate with MCP servers | All agents → |
| 📋 Instructions | Coding standards applied automatically by file pattern | All instructions → |
| 🎯 Skills | Self-contained folders with instructions and bundled assets | All skills → |
| 🔌 Plugins | Curated bundles of agents and skills for specific workflows | All plugins → |
| 🪝 Hooks | Automated actions triggered during Copilot agent sessions | All hooks → |
| ⚡ Agentic Workflows | AI-powered GitHub Actions automations written in markdown | All workflows → |
| 🍳 Cookbook | Copy-paste-ready recipes for working with Copilot APIs | — |
🛠️ Tools
Looking at how to use Awesome Copilot? Check out the Tools section of the website for MCP servers, editor integrations, and other developer tooling to get the most out of this collection.
Install a Plugin
For most users, the Awesome Copilot marketplace is already registered in the Copilot CLI/VS Code, so you can install a plugin directly:
copilot plugin install <plugin-name>@awesome-copilot
If you are using an older Copilot CLI version or a custom setup and see an error that the marketplace is unknown, register it once and then install:
copilot plugin marketplace add github/awesome-copilot
copilot plugin install <plugin-name>@awesome-copilot
Contributing
See CONTRIBUTING.md · AGENTS.md for AI agent guidance · Security · Code of Conduct
The customizations here are sourced from third-party developers. Please inspect any agent and its documentation before installing.
Contributors ✨
Thanks goes to these wonderful people (emoji key):
This project follows the all-contributors specification. Contributions of any kind welcome!
📚 Additional Resources
- VS Code Copilot Customization Documentation - Official Microsoft documentation
- GitHub Copilot Chat Documentation - Complete chat feature guide
- VS Code Settings - General VS Code configuration guide
™️ Trademarks
This project may contain trademarks or logos for projects, products, or services. Authorized use of Microsoft trademarks or logos is subject to and must follow Microsoft's Trademark & Brand Guidelines. Use of Microsoft trademarks or logos in modified versions of this project must not cause confusion or imply Microsoft sponsorship. Any use of third-party trademarks or logos are subject to those third-party's policies.