@onozaty/redmine-mcp-server

What it does

This MCP server bridges Claude to Redmine, exposing the full Redmine REST API as callable tools. It covers all major Redmine operations: creating and updating issues, managing projects and users, recording time entries, and authoring wiki pages. The server supports both read-only mode for safe data reference and full read-write access for operational automation.

Who it's for

Team leads and project managers who run Redmine for issue tracking and want to automate workflows through Claude. Developers building Claude-based tools that need to query or modify project data. Operations teams managing team capacity and project timelines.

Common use cases

• Create issues with full details and custom fields from Claude conversations
• Query open issues, project status, and team workload via natural language
• Update issue metadata—status, assignee, priority, due date—in bulk or individually
• Record time entries and generate time tracking reports
• Manage project memberships and team permissions

Setup pitfalls

• Requires valid Redmine API key generated in admin settings (Administration → Settings → API); the server cannot authenticate without it
• Both REDMINE_URL and REDMINE_API_KEY environment variables are mandatory; missing either will cause startup failure
• Read-only mode (REDMINE_MCP_READ_ONLY=true) is recommended for safety; disabling it allows destructive operations like issue deletion
• Tool filtering regex patterns can inadvertently block needed operations; test REDMINE_MCP_TOOLS_ALLOW_PATTERN and REDMINE_MCP_TOOLS_DENY_PATTERN before production deployment