LongHorizon-Harness
An AI agent system designed for long-running operations, supporting the continuous execution of complex tasks in desktop applications and terminal environments.
- Region
- Overseas
- Pricing
- Free
- Open source
- Yes
- GitHub Stars
- ★ 1.1k
- Views
- 5
- Source
- GitHub
- Added
- 2026-08-24
- Last verified
- 2026-08-24
Overview
LongHorizon-Harness is a system for long-running AI agents. It can continuously execute tasks in desktop applications and command-line interfaces (CLI), maintaining task states to ensure reliable progress through complex workflows. The system supports backends such as Claude Code, Codex, OpenCode, and DeepSeek Harness. Users need only set a goal once, and the system can autonomously run for multiple hours, repeatedly recovering goals, validating states, selecting next actions, executing them, checking results, saving progress, or handling failures.
Key features
- ▪Supports multiple AI backends
- ▪Long-term continuous task execution
- ▪Automatic recovery and state validation
- ▪Suitable for desktop applications and CLI
Use cases
Pros
- +Supports multiple AI backends
- +Stable long-term operation
- +Automatic recovery and validation
- +Easy to install and use
Limitations / notes
- -Requires some technical background
- -May require internet connectivity
Who it's for
This overview was compiled by AI from public sources and may contain inaccuracies — please refer to the official site.
FAQ
Is it free?
Yes, the project is open-source and free.
Which platforms are supported?
Supports Web, API, and desktop clients.
Do I need scientific internet access?
Some features may require internet connectivity, depending on the AI backend used.
Is Chinese supported?
The project documentation includes a simplified Chinese version, but specific support details should be checked in the full instructions.
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