AI Plugin IndexHost Codex vs Harness
Host Codex and Harness are both ai and llm tools MCP servers. Harness scores higher (95 vs 86 out of 100). Harness has more GitHub stars (1.3k), and Host Codex was updated more recently (3 days ago). The table compares them side by side.
| Host Codex | Harness | |
|---|---|---|
| Score | 86 / 100 | 95 / 100 |
| What it does | OpenAI Codex CLI host adapter for agent-harness-generator (MCP via ~/.codex/config.toml) | Start Claude Code and Codex agents the person can watch, wait for them and read their answers. |
| Publisher | Verified: npm:@metaharness | Verified: harness.autonomous.ai |
| Grades | Maintenance A, Licence A, Quality A | Maintenance A, Licence A, Quality A |
| npm downloads a week | 590 | 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 | 709 | 1,320 |
| Last commit | 20 Oct 2026 | 19 Oct 2026 |
| Licence | MIT | MIT |
| Listed since | 20 Oct 2026 | 19 Oct 2026 |
| Install Host Codex | Install Harness |
Questions
Is Host Codex or Harness more popular?
Harness has more GitHub stars: 1,320.
Can I use Host Codex 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.