redmine-mcp-stdio

A local Model Context Protocol server (stdio) for Redmine. Point an MCP client at it (Cursor, VS Code, Claude, Codex, Windsurf, Cline, Zed, JetBrains AI and others) and work with Redmine issues, projects and time entries straight from the editor.

Tools

Every tool ships MCP tool annotations (readOnlyHint, destructiveHint, …), so clients can auto-approve read-only calls.

Install

No manual install needed. The client launches the server on demand with npx, which downloads it on first run and caches it after. Just add the config for your client under Connect.

Prefer to run from a local clone? See Development.

Get a Redmine API key

My account > API access key > Show.

• If there's no such section, an admin must enable the REST API in Administration > Settings > API.
• The key must belong to a user with permission to view (and, for writes, create/edit) issues.

⚠️ Never commit your API key. Copy .env.example to .env for local use; .env is gitignored.

Connect

The server reads REDMINE_URL and REDMINE_API_KEY from the environment. Provide them via the client's MCP config env block.

Cursor

Edit ~/.cursor/mcp.json (global) or .cursor/mcp.json in a project root:

{
  "mcpServers": {
    "redmine": {
      "command": "npx",
      "args": ["-y", "redmine-mcp-stdio"],
      "env": {
        "REDMINE_URL": "https://redmine.your-company.com",
        "REDMINE_API_KEY": "your_key"
      }
    }
  }
}

Reload Cursor and enable the server in Settings > MCP.

VS Code (GitHub Copilot)

Edit .vscode/mcp.json in your workspace (or your user mcp.json). Note the top-level key is servers, not mcpServers:

{
  "servers": {
    "redmine": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "redmine-mcp-stdio"],
      "env": {
        "REDMINE_URL": "https://redmine.your-company.com",
        "REDMINE_API_KEY": "your_key"
      }
    }
  }
}

Claude Code

claude mcp add redmine \
  --env REDMINE_URL=https://redmine.your-company.com \
  --env REDMINE_API_KEY=your_key \
  -- npx -y redmine-mcp-stdio

Or edit ~/.claude.json / the project .mcp.json directly (same shape as Claude Desktop below).

Claude Desktop

Edit claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/claude_desktop_config.json):

{
  "mcpServers": {
    "redmine": {
      "command": "npx",
      "args": ["-y", "redmine-mcp-stdio"],
      "env": {
        "REDMINE_URL": "https://redmine.your-company.com",
        "REDMINE_API_KEY": "your_key"
      }
    }
  }
}

Restart Claude Desktop afterwards.

Codex CLI

Add a server table to ~/.codex/config.toml:

[mcp_servers.redmine]
command = "npx"
args = ["-y", "redmine-mcp-stdio"]
env = { REDMINE_URL = "https://redmine.your-company.com", REDMINE_API_KEY = "your_key" }

If node is installed via nvm, use the full path from which npx as command.

Windsurf

Edit ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "redmine": {
      "command": "npx",
      "args": ["-y", "redmine-mcp-stdio"],
      "env": {
        "REDMINE_URL": "https://redmine.your-company.com",
        "REDMINE_API_KEY": "your_key"
      }
    }
  }
}

In Cascade, open MCP servers > Manage > View raw config, paste, then refresh. Supports ${env:VAR} interpolation if you'd rather not inline the key.

Cline

In the Cline pane, click the MCP Servers icon and choose Configure MCP Servers to open cline_mcp_settings.json:

{
  "mcpServers": {
    "redmine": {
      "command": "npx",
      "args": ["-y", "redmine-mcp-stdio"],
      "env": {
        "REDMINE_URL": "https://redmine.your-company.com",
        "REDMINE_API_KEY": "your_key"
      }
    }
  }
}

Zed

Zed calls MCP servers context servers. Open the command palette and run zed: open settings, then add to settings.json (note "source": "custom"):

{
  "context_servers": {
    "redmine": {
      "source": "custom",
      "command": "npx",
      "args": ["-y", "redmine-mcp-stdio"],
      "env": {
        "REDMINE_URL": "https://redmine.your-company.com",
        "REDMINE_API_KEY": "your_key"
      }
    }
  }
}

Zed restarts the server on save, so no editor reload is needed.

JetBrains AI Assistant (2025.2+)

Settings > Tools > AI Assistant > Model Context Protocol (MCP) > Add:

• Type: stdio
• Command: npx (if node is installed via nvm, use the full path from which npx)
• Arguments: -y redmine-mcp-stdio
• Environment:
  • REDMINE_URL=https://redmine.your-company.com
  • REDMINE_API_KEY=your_key

Enable "Automatically enable new and changed MCP servers", then Apply. Click the status icon and you should see 12 tools. Invoke them in chat with /.

Verify locally (optional)

REDMINE_URL=https://redmine.your-company.com REDMINE_API_KEY=your_key npx -y redmine-mcp-stdio

The process should start and wait silently on stdio (Ctrl+C to exit).

Troubleshooting

• Failed to connect / server won't start: the command must resolve in the client's environment. If node is installed via nvm, a bare npx may not be found. Use the full path from which npx as the command.
• Missing REDMINE_URL or REDMINE_API_KEY: the env block wasn't passed. Double-check it's in the MCP config, not your shell.
• Redmine 401 / 403: bad API key, or the key's user lacks permission for that action.
• Redmine 404: the issue/project id doesn't exist, or REDMINE_URL points at the wrong host.

Configuration

Architecture

The code is organized in layers, with a single HTTP client injected into each tool group so that tools never touch transport or process.env directly: