Text to PostgreSQL Schema Generator

VibeSchema turns plain text into a ready-to-run PostgreSQL schema. No SQL knowledge required. Describe your database in plain English and get complete CREATE TABLE statements, foreign keys, and constraints instantly.

The process is simple:

1. Open PostgreSQL mode. The button above takes you straight there. You can describe your app in plain English to generate a starting schema, or paste an existing schema in Code View to start from that.

2. Iterate. Not happy with a design choice? Just say what you’d like to change. Add tables, rename fields, adjust relationships. The diagram and the SQL update in real time.

3. Export when ready. Hit the export button to download your .sql file, ready to run against your PostgreSQL database using psql, pgAdmin, or your migration pipeline.

Example

The prompt:

A project management tool with workspaces, members, and tasks. Members belong to workspaces, tasks are assigned to members.

VibeSchema generates the structure instantly:

CREATE TABLE workspaces (
  id SERIAL PRIMARY KEY,
  name VARCHAR,
  created_at TIMESTAMP
);
CREATE TABLE members (
  id SERIAL PRIMARY KEY,
  workspace_id INTEGER,
  name VARCHAR,
  email VARCHAR,
  created_at TIMESTAMP
);
CREATE TABLE tasks (
  id SERIAL PRIMARY KEY,
  workspace_id INTEGER,
  assigned_to INTEGER,
  title VARCHAR,
  description TEXT,
  created_at TIMESTAMP
);
ALTER TABLE members
  ADD CONSTRAINT fk_members_workspace_id
  FOREIGN KEY (workspace_id) REFERENCES workspaces (id);
ALTER TABLE tasks
  ADD CONSTRAINT fk_tasks_workspace_id
  FOREIGN KEY (workspace_id) REFERENCES workspaces (id);
ALTER TABLE tasks
  ADD CONSTRAINT fk_tasks_assigned_to
  FOREIGN KEY (assigned_to) REFERENCES members (id);

From there you can keep iterating: add constraints, change types, introduce new tables, and re-export at any point.

How it works

VibeSchema’s PostgreSQL mode works directly in PostgreSQL: the AI reads and writes PostgreSQL DDL, not an intermediate format. There is no conversion step.

Most schema tools generate a neutral intermediate format like DBML or JSON and then convert it to PostgreSQL on export. That conversion is where things go wrong: constraints get dropped, defaults disappear, indexes vanish. VibeSchema does not have these issues.

The schema in the code view is the schema. When you ask the AI to add a CHECK constraint, a partial index, or a DEFAULT value, it writes that into the PostgreSQL source and it stays there. The ER diagram is rendered from the same source, so everything stays in sync.

Frequently asked questions

Is this free? Yes. VibeSchema is free to use, including the PostgreSQL export.

Do I need to know SQL? No. You describe your database in plain English and VibeSchema handles the SQL. If you want to refine the output manually you can, but it is never required.

Can I start from existing SQL instead of plain text? Yes. Paste your existing PostgreSQL schema into Code View and VibeSchema will load it as the starting point. You can then iterate in chat and re-export when done.

Do I need to sign up? No. VibeSchema currently has no accounts.