AI Plugin Indexcalendly-mcp-server vs Harness
calendly-mcp-server and Harness are both ai and llm tools MCP servers. Harness scores higher (95 vs 21 out of 100). Harness has more GitHub stars (1.3k), and Harness was updated more recently (3 days ago). The table compares them side by side.
| calendly-mcp-server | Harness | |
|---|---|---|
| Score | 21 / 100 | 95 / 100 |
| What it does | Connect Claude to Calendly — schedule meetings, check availability, manage events | Start Claude Code and Codex agents the person can watch, wait for them and read their answers. |
| Publisher | Community: NyxToolsDev | Verified: harness.autonomous.ai |
| Grades | Maintenance D, Licence A, Quality C | Maintenance A, Licence A, Quality A |
| npm downloads a week | Not on npm | 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 | 0 | 1,320 |
| Last commit | 6 Apr 2026 | 19 Oct 2026 |
| Licence | MIT | MIT |
| Listed since | 19 Oct 2026 | 19 Oct 2026 |
| Install calendly-mcp-server | Install Harness |
Questions
Is calendly-mcp-server or Harness more popular?
Harness has more GitHub stars: 1,320.
Can I use calendly-mcp-server 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.