AI Plugin IndexMCP UI Ext Apps Openai vs Harness
MCP UI Ext Apps Openai and Harness are both ai and llm tools MCP servers. Harness scores higher (95 vs 50 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.
| MCP UI Ext Apps Openai | Harness | |
|---|---|---|
| Score | 50 / 100 | 95 / 100 |
| What it does | Unified utility for building apps that work on both OpenAI ChatGPT and MCP Apps platforms | Start Claude Code and Codex agents the person can watch, wait for them and read their answers. |
| Publisher | Verified: npm:mcp-ui-ext-apps-openai | Verified: harness.autonomous.ai |
| Grades | Maintenance B, Licence A, Quality C | Maintenance A, Licence A, Quality A |
| npm downloads a week | 11 | 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 | 1 | 1,320 |
| Last commit | 4 Aug 2026 | 19 Oct 2026 |
| Licence | MIT | MIT |
| Listed since | 20 Oct 2026 | 19 Oct 2026 |
| Install MCP UI Ext Apps Openai | Install Harness |
Questions
Is MCP UI Ext Apps Openai or Harness more popular?
Harness has more GitHub stars: 1,320.
Can I use MCP UI Ext Apps Openai 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.