AI Plugin IndexREA vs Harness
REA and Harness are both ai and llm tools MCP servers. Harness scores higher (95 vs 94 out of 100). REA has more GitHub stars (335k), and REA was updated more recently (4 days ago). The table compares them side by side.
| REA | Harness | |
|---|---|---|
| Score | 94 / 100 | 95 / 100 |
| What it does | Reverse engineer anything from your terminal or agent with one CLI and MCP server. | Start Claude Code and Codex agents the person can watch, wait for them and read their answers. |
| Publisher | Community: morluto | Verified: harness.autonomous.ai |
| Grades | Maintenance A, Licence A, Quality A | Maintenance A, Licence A, Quality A |
| npm downloads a week | 415,576 | 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 | 335,219 | 1,320 |
| Last commit | 19 Oct 2026 | 19 Oct 2026 |
| Licence | MIT | MIT |
| Listed since | 19 Oct 2026 | 19 Oct 2026 |
| Install REA | Install Harness |
Questions
Is REA or Harness more popular?
REA has more GitHub stars: 335,219.
Can I use REA 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.