refly-ai/refly: First Open-Source Agent Skills Builder — Define Skills via Vibe Workflow, Export as MCP Servers or SDKs to Claude Code, Cursor, Codex

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Refly positions on the thesis that 'skills are infrastructure, not prompts': users define reusable agent capabilities via natural language vibe workflows in a visual IDE, then deploy them as MCP servers, standard APIs, or portable SDKs to any agent framework with 3,000+ native integrations including Stripe, Slack, Salesforce, and GitHub. With 7K stars, the project enters the same skills-as-packages space as eljulians/skillfile (covered yesterday) but takes a builder-first workflow approach rather than a package manager metaphor. Native Claude Code and Cursor export means skills become versioned, shareable primitives that any agent can invoke reliably.