Herdr is an open-source agent harness and orchestrator designed to coordinate, manage, and execute autonomous terminal-based AI coding workflows. Developed under the herdrdev organization, the tool acts as a control plane for AI agents, organizing tasks across isolated workspace groups and repositories. In daily operations, Herdr manages agent lifecycles, scoped skill sets, and working trees directly from the command line. It delegates coding tasks to underlying agents and tools while enforcing boundary isolation across project workspaces. The platform incorporates terminal emulation capabilities—including native ConPTY support on Windows—to reliably run interactive terminal sessions, agent tooling, and environment scripts. Herdr differentiates itself by treating workspace management, skill definition, and agent orchestration as first-class infrastructure rather than simple process wrappers. By decoupling agent execution from the primary working directory via worktree and workspace group isolation, it prevents unintended side effects across development branches. Herdr is maintained as an open-source project on GitHub with build and packaging configurations for multiple environments, including Nix and Windows.
Tags: agent harness, ai agent, cli, coding agent, developer tools, OpenSource