Parallel Harness Pets (parallel-harness-pets) is an open-source companion tool and harness plugin created by TevvvB. It is designed for developers running terminal-based AI coding agents, including Claude Code and OpenAI Codex CLI environments, providing ambient workspace and git health telemetry directly within the agent interaction stream. The tool operates via a Go-based CLI utility (cmd/pets) and an integrated Claude Code plugin manifest. During agent execution, it injects compact, monochrome-safe status strings into terminal hooks and status lines. It tracks key git metrics—such as uncommitted modifications, unpushed local commits, and branch divergence from trunk—alongside ASCII/Unicode pet avatars and health meters (hearts and glyphs). What distinguishes Parallel Harness Pets is its focused role as an unobtrusive telemetry companion rather than a complex multi-agent framework. It surfaces critical repository state to the developer while agents perform automated file edits, preventing branch drift and forgotten unpushed changes during parallel agent sessions. The project is available as an open-source repository on GitHub and distributes via standard Go binary builds and the Claude Code plugin mechanism.
Tags: agent harness, cli, coding agent, developer tools, OpenSource