Bluebag – Model-agnostic runtime for AI agent skills in production

Summary: Bluebag is a production runtime that enables AI agents to run Anthropic-style skills across any large language model using Vercel AI SDK or LangChain. It provides a filesystem-based skill library with safe execution, dependency management, and concurrent file access, all manageable via CLI, SDK, and a web app.

What it does

Bluebag packages instructions, scripts, and references into skill directories, runs Python or JavaScript with automatic dependency installation, and offers a files API for agents to manage files securely. It supports skill lifecycle, reusability, and sandboxing at scale.

Who it's for

Developers building remote AI agents who want to use Anthropic-style skills across different LLMs without custom infrastructure.

Why it matters

It solves the challenge of running and managing agent skills safely and efficiently across multiple LLMs, enabling flexible and scalable AI agent development.