diagrams.net (formerly draw.io) is a free online diagram software for making flowcharts, process diagrams, org charts, UML, ER and network diagrams
Why this server?
Generates Draw.io compatible diagrams (flowcharts, sequence diagrams, network diagrams, and custom diagrams) from natural language prompts, outputting XML files that can be opened directly in Draw.io
Why this server?
Enables programmatic control of Draw.io diagrams through MCP commands, allowing AI agents to create, modify, and analyze diagram content including architectural diagrams, flowcharts, process maps, and visual relationships.