GitHub Team Unveils AI-Powered Emoji List Generator Built Entirely with Copilot CLI
New York — In a live-streamed development session this week, the GitHub team released an open-source emoji list generator powered entirely by the GitHub Copilot CLI and its SDK. The tool automatically converts plain bullet points into emoji-enriched lists and copies the result directly to the user’s clipboard, all from the terminal.
Key Details
The project, simply named Emoji List Generator, was built during the weekly Rubber Duck Thursdays stream. It uses @opentui/core for the terminal UI, @github/copilot-sdk for AI inference, and the clipboardy library for clipboard access.
“Coming up with the perfect emoji is far too slow in this ‘move fast and break things’ world,” said a GitHub engineer involved in the project. “We needed a way to instantly add relevant emojis to our launch tweets and updates. This tool does exactly that.”
Background
The development team started with a plan mode prompt using Claude Sonnet 4.6 inside the Copilot CLI. The initial instruction asked for an “AI-powered markdown emoji list generator” that would replace bullet points with appropriate emojis and copy the output to the clipboard.
Copilot responded with clarifying questions about the tech stack and library suggestions. After incorporating viewer feedback—particularly from a chat participant named Gabor who recommended OpenTUI—the assistant generated a comprehensive plan.md file for review.
The plan was then executed using Claude Opus 4.7 in autopilot mode. Within minutes, a fully functional terminal application was ready. The final tool leverages several Copilot CLI capabilities:
- Plan mode for architectural design
- Autopilot mode for code generation
- Multi-model workflow combining Sonnet and Opus
- The allow-all-tools flag for unrestricted tool access
- The GitHub MCP server for context-aware assistance
What This Means
The emoji list generator is a small but indicative example of how AI-assisted development can reduce friction in everyday tasks. By offloading the creative choice of emojis to a model, developers can focus on writing content while maintaining a polished, engaging presentation.
“This isn’t just about emojis,” the engineer added. “It demonstrates a workflow where a developer can describe a tool in plain language and have it built in minutes using Copilot CLI. The same pattern can be applied to countless small utilities.”
The project is free and open source, available now for anyone to inspect, modify, or extend. The GitHub team encourages the community to build similar tools by referring to the Copilot CLI documentation and the Copilot SDK.
How to Get Started
Interested developers can clone the repository, install dependencies, and run the tool with a single command. The interface requires no configuration: paste your bullet list, press Ctrl+S, and receive the emoji-enhanced version on your clipboard.
“We shipped the most amazing emoji list generator ever,” the engineer joked. “Works in the CLI, uses the Copilot SDK to intelligently convert bullet points to relevant emojis, and copies the result to the clipboard. We’re dogfooding it already.”
The Rubber Duck Thursdays stream airs weekly and has become a platform for collaborative, real-world Copilot experiments. The emoji list generator is the latest in a series of projects that showcase the evolving capabilities of AI pair programming.