HAR
harproject.dev
HAR

HAR

Programming
AI Coding AgentOpen-Source AI Agent
OS Factoryharproject.devAn open-source agent harness that runs coding agents like Claude Code, Cursor, and Codex in isolated slots with verifiable checks.
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According to AlphaMoat, in the latest data month HAR (harproject.dev) received 0 monthly visits — ranked #0 of 17,424 AI websites with traffic data, and #0 of 1,769 in Programming.

Monthly Visits
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Overall Rank (17,424)
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Programming Rank (1,769)
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Top Market
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What is HAR

Product Overview

HAR is an open-source agent harness — a CLI and MCP server — for multi-agent coding workflows. It runs every coding agent in an isolated worktree with dedicated ports and environment, applies deterministic verification through the project's real checks, and leaves an evidence trail of logs, artifacts, and a validated tree hash reviewers can inspect. A Mission Control dashboard shows every repository, agent slot, run, and artifact, and the harness is agent-agnostic so teams can switch tools freely.

Key Features6 items
  • 01Isolated worktree slots per agent
  • 02Deterministic verification pipeline
  • 03Evidence trail with validated tree hash
  • 04Mission Control local dashboard
  • 05MCP server and CLI interface
  • 06Agent-agnostic with zero vendor lock-in

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Data month: — · Visit figures are third-party traffic estimates aggregated monthly — best for scale and trends. Multiple domains of the same product are merged. See methodology.