# Compatibility

| Harness | mcpstack 0.1.0-0.2.0 | main (source) |
| --- | --- | --- |
| Codex | ✅ | ✅ |
| Claude Code | ✅ | ✅ |
| Gemini CLI | ❌ | ❌ |

✅ Supported · 🚧 In progress · ❌ Not implemented