Show HN: Agentpack – isolated config layers for Claude Code, Codex, and OpenCode (nexo.sh)

A new tool called Agentpack has been launched, designed to manage the diverse configurations needed by various AI coding agents like Claude Code, Codex, and OpenCode. This innovative solution creates isolated, ephemeral layers of configuration that eliminate the hassle of configuring global or project-specific settings, which often leads to clashing agent performance. The ability to maintain a clean project repository while enabling easy switching between different agent modes provides significant advantages for teams using multiple AI agent harnesses. Agentpack facilitates the download and staging of AI skills and configurations from GitHub, ensuring reproducibility and ease of access without the clutter typically associated with direct installations. It introduces a manifest-based system for managing configuration files, alongside the concept of "modes" to toggle specific skills based on the context of the project (e.g., frontend vs. backend). This functionality allows developers to customize AI tool behavior dynamically, addressing a critical need in modern software development workflows, especially for fast-paced startup environments. By streamlining the configuration process, Agentpack aims to boost efficiency and collaboration among developers working with multiple AI models, mitigating the limitations of current agent-specific configurations.