AI Plugin IndexMarrow AI: Control Layer for AI Agents vs Harness
Marrow AI: Control Layer for AI Agents and Harness are both ai and llm tools MCP servers. Harness scores higher (95 vs 92 out of 100). Harness has more GitHub stars (1.3k), and Harness was updated more recently (4 days ago). The table compares them side by side.
| Marrow AI: Control Layer for AI Agents | Harness | |
|---|---|---|
| Score | 92 / 100 | 95 / 100 |
| What it does | Approval gate and audit trail for AI agent actions: policy check first, proof after. Any MCP client. | Start Claude Code and Codex agents the person can watch, wait for them and read their answers. |
| Publisher | Verified: getmarrow.ai | Verified: harness.autonomous.ai |
| Grades | Maintenance A, Licence A, Quality C | Maintenance A, Licence A, Quality A |
| npm downloads a week | 4,891 | Not on npm |
| Runs | Local | Local |
| Works with | Claude Code, Claude Desktop, Cursor, Codex, Gemini CLI, VS Code, Windsurf | Claude Code, Claude Desktop, Cursor, Codex, Gemini CLI, VS Code, Windsurf |
| GitHub stars | 6 | 1,320 |
| Last commit | 17 Oct 2026 | 19 Oct 2026 |
| Licence | MIT | MIT |
| Listed since | 19 Oct 2026 | 19 Oct 2026 |
| Install Marrow AI: Control Layer for AI Agents | Install Harness |
Questions
Is Marrow AI: Control Layer for AI Agents or Harness more popular?
Harness has more GitHub stars: 1,320.
Can I use Marrow AI: Control Layer for AI Agents and Harness together?
Yes. AI assistants can load several MCP servers at once. Install both and the assistant picks the right one for each task.