LongHorizon-Harness plugin for Codex
The long-horizon computer-use harness. Run AI agents across desktop apps and the CLI for extended periods while preserving task state and making reliable progress on complex workflows. Features fresh-context execution, durable verified state, independent auditing, recoverable progress, and native Claude Code / Codex / OpenClaw integration.
How to install LongHorizon-Harness in Codex
We didn't find a Codex manifest at the repo root, so there's no one-line install. Follow the install steps in the repo README.
What it contains
Component list not published in a manifest we can read. See the repo README.
About this listing
LongHorizon-Harness is a community plugin on GitHub by AMAP-ML, tagged codex-plugin. It passed the CodexStacks quality filter (at least 10 stars, pushed in the last 180 days, not a fork, has a description and a manifest or README). OpenAI hasn't reviewed it and we haven't tested it. It's one of 104 listings in the Productivity category (category assigned by CodexStacks from the repo's topics and description).
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LongHorizon-Harness FAQ
How do I install LongHorizon-Harness in Codex?
We didn't find a Codex manifest at the repo root, so there's no one-line install. Follow the install steps in the repo README.
Is LongHorizon-Harness an official Codex plugin?
No. LongHorizon-Harness is a community repo on GitHub by AMAP-ML. It passed the CodexStacks quality filter, but OpenAI hasn't reviewed it and we haven't tested it, so read the code before you install it.
What does LongHorizon-Harness include?
Component list not published in a manifest we can read. See the repo README.
Details
- Type
- Plugin
- Category
- Productivity (assigned by us)
- Source
- Community
- Author
- AMAP-ML
- License
- MIT
- GitHub stars
- 1,748 (at last sync)
- Last push
- 2026-08-20
- GitHub topics
- agent, claude, claude-code, claude-plugin, cli, codex-desktop, cua, deepseek-harness, gui, harness, long-horizon, long-horizon-agents
- Source
- https://github.com/AMAP-ML/LongHorizon-Harness
- Website
- https://lh-harness.pages.dev
- Listed via
- GitHub topic codex-plugin
- Tested by CodexStacks
- Not yet
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For maintainers: badge and embeds
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Markdown
[](https://codexstacks.com/p/longhorizon-harness/)HTML
<a href="https://codexstacks.com/p/longhorizon-harness/"><img src="https://codexstacks.com/badge.svg" alt="Listed on CodexStacks" width="172" height="28"></a>Embed card (static HTML and inline CSS, no JavaScript). Preview:
<a href="https://codexstacks.com/p/longhorizon-harness/" style="display:block;max-width:380px;box-sizing:border-box;padding:14px 16px;border:1px solid #3a2c26;border-radius:12px;background:#0d0b0a;color:#f3ece6;font:14px/1.45 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;text-decoration:none"><span style="display:block;font-size:16px;font-weight:700;color:#f3ece6">LongHorizon-Harness</span><span style="display:block;margin:2px 0 8px;font-size:12px;color:#b5a9a1">Community Codex plugin</span><span style="display:block;margin:0 0 10px;color:#ddd3cc">The long-horizon computer-use harness. Run AI agents across desktop apps and the CLI for extended periods while…</span><span style="font-size:12px;font-weight:600;color:#ffb347">View on CodexStacks →</span></a>Markdown summary
**[LongHorizon-Harness on CodexStacks](https://codexstacks.com/p/longhorizon-harness/)**: Community Codex plugin.More on badges, embeds and keeping your listing up to date: CodexStacks for plugin authors.
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