{"repo":"kajitiluna/erd-designer","free":true,"listed":false,"github":"https://github.com/kajitiluna/erd-designer","clone":"git clone https://github.com/kajitiluna/erd-designer.git","description":"Free, open-source ERD designer for browser, VS Code & Google Drive — with AI agent integration (MCP / Claude Code plugin). DDL export for 7 databases.","language":"TypeScript","stars":17,"topics":["erd","database-design","entity-relationship-diagram","erd-design","agent-skills","ai-agents","bigquery","claude-code","database","ddl"],"license":"Apache-2.0","category":"databases-storage","readme_excerpt":"Entity Relationship Diagram Designer ERD Designer is a free, open-source tool for visually designing database schemas. Design your tables and relationships in the browser, VSCode, or Google Drive — with AI integration via an agent plugin (CLI + skill) or MCP (Model Context Protocol). Inspired by ERMaster, built for the modern development workflow. ▶ Try it now — kajitiluna.github.io/erd-designer No installation, no account. Your diagrams stay in your browser. Why ERD Designer? - Design on a canvas, not in a config file — drag-and-drop tables, click-to-connect relationships, and instant DDL — no YAML or hand-written SQL to start. - Your coding agent can edit it too — the diagram is not a dead-end artifact. Claude Code and other agents create tables, add columns, wire up relations, and generate DDL through the same tool catalog the app itself uses. - Output your team actually needs — DDL for 7 databases, plus Excel / Google Spreadsheet specification documents and PNG / SVG / interactive HTML diagrams. - Reviewable in Git — .erd is plain JSON, so schema changes show up as a readable diff in pull requests instead of an opaque binary blob. - Define a column once, reuse it everywhere — Column Share Models and Column Groups keep created at , tenant keys, and audit columns consistent across every table that uses them. Features Visual Database Design - Drag-and-drop table design — Create and arrange tables, define columns, and set constraints on an interactive canvas - Relationship ma","default_branch":null,"files":null,"tree":[],"storefront":"/r/kajitiluna","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/kajitiluna/erd-designer/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}