What is the key difference between Open Greenhouse MCP and Calcom MCP?

Open Greenhouse MCP belongs to the Workplace & Productivity category with local stdio execution, while Calcom MCP belongs to the Workplace & Productivity category with cloud HTTP/SSE execution.

How do I install Open Greenhouse MCP or Calcom MCP in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Open Greenhouse MCP and Calcom MCP free or paid?

Open Greenhouse MCP operates under a Free / Open Source model (API Key required). Calcom MCP operates under a BYOK (Pay Provider Direct) model (API Key required).

Which MCP server has more tools and community activity?

Open Greenhouse MCP lists 6 tools with 3 views and 5 GitHub stars. Calcom MCP lists 6 tools with 3 views and 19 GitHub stars.

Can I use both Open Greenhouse MCP and Calcom MCP together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Open Greenhouse MCP vs Calcom MCP

In-depth architectural comparison of the Open Greenhouse MCP and Calcom MCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Open Greenhouse MCP

Workplace & Productivity · Local stdio

Quality: 51/100 (Good) | Auth: API Key required

Calcom MCP

Workplace & Productivity · Remote HTTP/SSE

Quality: 40/100 (Fair) | Auth: API Key required

Verdict Summary: Choose Open Greenhouse MCP if you need specialized Workplace & Productivity tools running via a local process. Choose Calcom MCP if your workspace requires Workplace & Productivity integration with remote web transport. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Open Greenhouse MCP when:

You need dedicated capabilities in the Workplace & Productivity domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: API Key required (Free / Open Source).
You have access to required keys: GREENHOUSE_API_KEY, GREENHOUSE_BOARD_TOKEN, GREENHOUSE_TOOL_PROFILE, GREENHOUSE_READ_ONLY, GREENHOUSE_ON_BEHALF_OF, GREENHOUSE_LOG_LEVEL, GREENHOUSE_LOG_FILE.
Primary tools included: Read-only, recruiter, and full access profiles, Greenhouse Harvest API coverage, Candidate screening and resume search.

Explore Open Greenhouse MCP Details

Choose Calcom MCP when:

You need dedicated capabilities in the Workplace & Productivity domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: API Key required (BYOK (Pay Provider Direct)).

Feature & Specification Comparison

Specification	Open Greenhouse MCP benmonopoli Workplace & Productivity	Calcom MCP Danielpeter-99 Workplace & Productivity
Summary	Production-ready MCP server for Greenhouse ATS with 175 tools for recruiting teams. Role-based profiles (full/recruiter/read-only), composite workflow tools for pipeline views, analytics, candidate search, and bulk operations.	MCP server for Calcom. Manage event types, create bookings, and access Cal.com scheduling data through LLMs.
Category & Scope

Tools & Capabilities Breakdown

Open Greenhouse MCP Tools (6)

Read-only, recruiter, and full access profiles

Greenhouse Harvest API coverage

Candidate screening and resume search

Pipeline analytics and workflow tools

Job board listing and application tools

Rate-limited bulk recruiting operations

Calcom MCP Tools (6)

Cal.com API v2 access

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Open Greenhouse MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "benmonopoli-open-greenhouse-mcp": {
      "command": "uvx",
      "args": [
        "open-greenhouse-mcp"
      ],
      "env": {
        "GREENHOUSE_API_KEY": "YOUR_GREENHOUSE_API_KEY_HERE",
        "GREENHOUSE_BOARD_TOKEN": "YOUR_GREENHOUSE_BOARD_TOKEN_HERE",
        "GREENHOUSE_TOOL_PROFILE": "YOUR_GREENHOUSE_TOOL_PROFILE_HERE",
        "GREENHOUSE_READ_ONLY": "YOUR_GREENHOUSE_READ_ONLY_HERE",
        "GREENHOUSE_ON_BEHALF_OF": "YOUR_GREENHOUSE_ON_BEHALF_OF_HERE",
        "GREENHOUSE_LOG_LEVEL": "YOUR_GREENHOUSE_LOG_LEVEL_HERE",
        "GREENHOUSE_LOG_FILE": "YOUR_GREENHOUSE_LOG_FILE_HERE"
      }
    }
  }
}

Calcom MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "danielpeter-99-calcom-mcp": {
      "url": "https://api.cal.com/v2"
    }
  }
}

Frequently Asked Questions

Open Greenhouse MCP is categorized under Workplace & Productivity and uses a local stdio subprocess. In contrast, Calcom MCP belongs to Workplace & Productivity using remote streaming HTTP/SSE transport. Select Open Greenhouse MCP when you need capabilities focused on workplace & productivity and Calcom MCP when you require tools for workplace & productivity.

More alternatives to Open Greenhouse MCP More alternatives to Calcom MCP Workplace & Productivity category hub