By LifeSG
VS Code agent plugin for software engineering knowledge — SOLID principles, design patterns, clean code, architecture styles, git workflow, testing strategy, and debugging methodology.
Software Engineer for system architecture decisions, technical debt strategy, scalability analysis, and cross-cutting engineering concerns. Provides multi-perspective trade-off analysis and strategic technology guidance.
Specialist subagent that analyzes a user's prompt, returns a single improved version optimized for better Copilot responses, and explains the prompt engineering principles applied. Invoked by the prompt-refinement instruction -- not user-facing.
Enhancement Proposal (EP) creation — stepwise, KEP-style EP authoring with template discovery, parallel codebase research, and structured Part-1 / Part-2 / Part-3 generation. Use when creating or drafting an EP or feature design document.
Atomic commit workflow — groups changed files into logical commits and produces Conventional Commit messages prefixed with branch name and author initials. Use when performing any git staging, committing, or when the user asks to save, commit, or push work.
Markdown formatting rules: 80-character hard line wrap, heading hierarchy (no H1), fenced code blocks with language tags, table alignment, and YAML front matter conventions. Use when creating or editing any .md or markdown file.
Implementation plan generation — decomposes an EP or task description into a parallelised, phase-based workplan with a Mermaid dependency graph, critical path analysis, per-task agent prompts, and a parallel dispatch table. Use when creating an implementation plan for an EP or any task description.
Uses power tools
Uses Bash, Write, or Edit tools
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A curated collection of GitHub Copilot agent plugins for the Singapore Government digital ecosystem
This repository is a marketplace of GitHub Copilot agent plugins. Each plugin ships a curated set of customization files — agents, instruction files, prompts, and skills — that are installed directly into a user's VS Code workspace.
Plugins are independent and self-contained. Install only the ones relevant to your project.
| Plugin | Description |
|---|---|
| ccube-fds-web-app-builder | Turns Copilot into an AI web app developer that builds React applications strictly following the Flagship Design System (FDS) |
| ccube-frontend-dev | VS Code agent plugin for frontend development knowledge — React 18/19 patterns, React fundamentals, CSS essentials, and styled-components best practices |
| ccube-software-craft | Brings principal-level software engineering knowledge into Copilot — architecture decisions, system design, clean code, git workflow, EP authoring, and markdown standards |
| ccube-ux-designers | Gives Copilot the knowledge to create validated DESIGN.md files by browsing live design system documentation directly in the integrated browser |
Do you work at GovTech?
If yes, you must complete the Copilot licence signup before continuing: Sign up for agentic AI coding tools (without MCP)
If you do not work at GovTech, skip this and go straight to Step 1.
This step tells VS Code where to find the CCube plugins. You only need to do this once.
Open User Settings JSON and press Enter{ }. Add the following block
inside the outermost { }. If the file already has other settings,
add a comma after the last existing entry before pasting this:
"chat.plugins.marketplaces": [
"https://github.com/LifeSG/ccube-agent-plugin-marketplace.git"
]
When done, the relevant part of your file should look like this:
{
.........
"some.existing.setting": true,
"chat.plugins.marketplaces": [
"https://github.com/LifeSG/ccube-agent-plugin-marketplace.git"
]
}
You should see no error highlighting in the file. If VS Code shows a
red underline, check that every line ends with a comma except the last
entry before a closing } or ].
If you have never enabled agent plugins before, you need to turn the feature on first.
Open User Settings JSON and press Enter — a file called
settings.json opens} at the very end of the file. Place your cursor
on the line just above it and add the following line. If the line
above already ends with } or ], add a comma first:
"chat.plugins.enabled": true
Open the Extensions view (Cmd + Shift + X on Mac) You should now see an Agent Plugins section

npx claudepluginhub lifesg/ccube-agent-plugin-marketplace --plugin ccube-software-craftVS Code agent plugin that builds web applications strictly following the Flagship Design System — enforces FDS components, tokens, and accessibility patterns across every Copilot suggestion.
VS Code agent plugin for frontend development knowledge — React 18/19 patterns, React fundamentals, CSS essentials, and styled-components best practices.
VS Code agent plugin for UX designers — creates and validates DESIGN.md files by browsing live design system documentation directly in the integrated browser.
Comprehensive feature development workflow with specialized agents for codebase exploration, architecture design, and quality review
A growing collection of Claude-compatible academic workflow bundles. Covers scientific figures, manuscript writing and polishing, reviewer assessment, citation retrieval, data availability, paper reading, literature search, response letters, paper-to-PPTX conversion, and evidence-grounded Chinese invention patent drafting. Rules are organized as reusable skill folders with explicit workflows and quality checks.
Harness-native ECC operator layer - 67 agents, 271 skills, 92 legacy command shims, reusable hooks, rules, selective install profiles, and production-ready workflows for Claude Code, Codex, OpenCode, Cursor, and related agent harnesses
Comprehensive skill pack with 66 specialized skills for full-stack developers: 12 language experts (Python, TypeScript, Go, Rust, C++, Swift, Kotlin, C#, PHP, Java, SQL, JavaScript), 10 backend frameworks, 6 frontend/mobile, plus infrastructure, DevOps, security, and testing. Features progressive disclosure architecture for 50% faster loading.
Tools to maintain and improve CLAUDE.md files - audit quality, capture session learnings, and keep project memory current.
Develop, test, build, and deploy Godot 4.x games with Claude Code. Includes GdUnit4 testing, web/desktop exports, CI/CD pipelines, and deployment to Vercel/GitHub Pages/itch.io.