HAR

Open agent harness with isolated worktrees and deterministic verification for coding agents

PlatformWebfreeglobal

HAR is a free, open-source harness (CLI plus MCP server) for AI coding agents like Claude Code, Cursor, and Codex, giving each agent run an isolated worktree and a deterministic verify step so results can be trusted. It's aimed at developers who want reliable, software-factory-style workflows for running AI coding agents rather than ad-hoc sessions.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of HAR - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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