What is ToolkitLab?
ToolkitLab is a browser-based product focused on schema design and system modeling. Today, Schema Studio is the main tool available.
Browser-based schema and workflow modeling
Design Mermaid ER diagrams.Test schema workflows in one browser workspace.
Parse schemas. Edit tables. Generate data. Simulate workflows.
No signup. No data leaves your browser.
Inside Schema Studio
Parse, edit, and simulate in one workspace
Interactive demo
ER Input
Parse and apply Mermaid changes
live parse
erDiagram
users ||--o{ orders : places
orders ||--o{ payments : settles
payments {
string payment_id PK
string order_id FK
string status
}
Data Editor
Generated sample rows update with the schema
payment_idorder_idstatus
pay_1029ord_8821READY
pay_1030ord_8822HELD
Schema Canvas
Visual state stays close to the studio workspace
users
user_id
email
status
orders
order_id
user_id
total
payments
payment_id
order_id
status
Playback
Payment review table is highlighted as the next step
step 3
Tool index
Focused tooling for schema and system modeling.
Start with Mermaid schema builder for Mermaid ER diagram parsing, database schema exploration, and workflow simulation in the browser.
Live now
Schema Studio
Design, inspect, and simulate relational systems from Mermaid ER diagrams with local-first project storage.
Open toolIn progress
Workflow Modeling
The next area of focus after Schema Studio: workflow modeling and system behavior analysis.
View roadmapPlanned
Schema Modeling Tools
Future additions will stay close to schema exploration, modeling, and simulation rather than broad developer tooling.
View roadmapRoadmap
Toolkit Lab is being built as a collection, not a monolith.
Schema Studio is the first production-ready utility. Future work is aimed at adjacent schema and workflow modeling needs.
That gives `toolkitlab.dev` a clear top-level identity while keeping each tool accessible by its own route, metadata, and product language.
If you want to help fund those additions, visit Support My Work.
FAQ
Common questions
Is Schema Studio free?
Yes. Schema Studio is free to use in the browser.
Does ToolkitLab require signup?
No. You can use Schema Studio without creating an account.
What can I build with Schema Studio?
You can design database schemas, visualize Mermaid ER diagrams, edit sample data, and simulate workflows before implementation.