Rhomb is a text-first database schema designer. Define tables in an intuitive syntax — your ER diagram updates live.
users --- id INT PK email VARCHAR UNIQUE name VARCHAR posts --- id INT PK user_id INT FK -> users.id title VARCHAR body TEXT
Write schema in a clean syntax with syntax highlighting and context-aware autocomplete.
Tables, FK edges, and PK symbols render as you type. No manual drag-and-drop required.
Expose your schema to AI coding agents via a local MCP client. Available on the Agent tier.
No credit card required. Free forever.