GitHub MCP
Official GitHub MCP server exposing repos, PRs, issues, and code search to AI agents. Enables agentic workflows that read and write to GitHub.
Spec Kit
Open-source scaffold from GitHub that operationalizes spec-driven development with AI coding agents. Creates structured .specify/ folders that serve as the source of truth for Claude Code, GitHub Copilot, and Gemini CLI — steering AI generation from upfront specs rather than improvised prompts.