OpenHarness (Ohmo) · HKUDS (University of Hong Kong Data Intelligence Lab)
MIT-licensed open agent harness from HKU's Data Intelligence Lab (agent loop, tool registry, permission system, hooks, skills, plugins, MCP, React TUI, automatic context compression) built for clarity and Claude-style workflow compatibility, shipping with 'Ohmo', a built-in personal agent that runs on existing Claude Code/Codex subscriptions and works via Feishu/Slack/Telegram/Discord, autonomously branching, coding, testing, and opening PRs.
Identity
| Homepage | https://github.com/HKUDS/OpenHarness |
|---|---|
| Repository | https://github.com/HKUDS/OpenHarness |
| License | open-source |
| Domain | general |
| Form factor | sdk · tui · cli · chat-integration |
Model support
| Model-agnostic | partial |
|---|---|
| Native models | Claude (via Claude Code subscription) · OpenAI Codex models (via Codex subscription) |
| Local models | ? unknown |
| Pricing | free |
Extensibility
| MCP client | ✓ yes |
|---|---|
| Agent Skills support | ✓ yes |
| Plugins / hooks | ✓ yes |
Execution & safety
| Sandboxing | unknown |
|---|---|
| Autonomy spectrum | supervised → semi-autonomous → autonomous-local |
| Subagents | ✓ yes |
| Parallel sessions | ✓ yes |
| Context management | compaction |
Integration & evidence
| Headless / API | ✓ yes |
|---|---|
| GitHub integration | ✓ yes |
| Sources |
✓ profile last verified 2026-07-08 · benchmark figures are vendor-reported unless a source states otherwise