Koskamo

HollyHR MCP MCP server

HollyHR provides an official Model Context Protocol endpoint that allows AI agents to interact with HR records and time-off management systems. It supports reading organization, people, reference, and time-off data, and enables governed write operations for time-off actions when explicitly granted by a System Admin. The server handles authentication via API keys or OAuth, ensuring secure access to HR data.

Endpoint and access

OAuth sign-in: the first time you connect, your client opens the vendor's own authorization prompt in a browser.

OAuth sign-inEndpoint checked 2026-10-05Operated by HollyHR
MCP endpoint (Streamable HTTP)
https://app.hollyhr.com/api/mcp
Vendor documentation

What you can do with it

  • Read employee and organization data
  • Manage time-off requests and records
  • Access HR reference information
  • Governed write actions for time-off

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http hollyhr-mcp https://app.hollyhr.com/api/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add hollyhr-mcp --url https://app.hollyhr.com/api/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable hollyhr-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "hollyhr-mcp": {
      "url": "https://app.hollyhr.com/api/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.
Cline configuration
{
  "mcpServers": {
    "hollyhr-mcp": {
      "type": "streamableHttp",
      "url": "https://app.hollyhr.com/api/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start hollyhr-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "hollyhr-mcp": {
      "type": "http",
      "url": "https://app.hollyhr.com/api/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http hollyhr-mcp https://app.hollyhr.com/api/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.
Claude Desktop configuration
{
  "mcpServers": {
    "hollyhr-mcp": {
      "url": "https://app.hollyhr.com/api/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "hollyhr-mcp": {
      "serverUrl": "https://app.hollyhr.com/api/mcp"
    }
  }
}

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