Stop waiting on backend. Ship with realistic data now.
Define your schema (or prompt AI), generate seeded relational data, and connect your frontend to live CRUD endpoints in minutes.
- Model schemas visually or generate them with AI
- Create seeded relational datasets that regenerate predictably
- Ship frontend flows against live CRUD endpoints immediately
Free plan includes 1 project, 1 source, and up to 10,000 rows.
Mock data helps you design screens. It doesn’t help you ship flows
The issue is not missing data. It is missing consistency between what your frontend expects and what your backend eventually delivers.
The hidden cost of placeholder data
- Velocity drops: UI and backend integration work happens twice.
- QA confidence drops: failed scenarios are hard to replay exactly.
- Demo quality drops: product screens look convincing, interactions do not.
Problem 01
Fixtures drift quickly
Static JSON rarely matches real product behavior once flows get complex.
Problem 02
Backend timelines block frontend
UI delivery slows down when API contracts and data are not ready yet.
Problem 03
QA data is hard to reproduce
Without deterministic seeds, bug scenarios are hard to recreate consistently.
How Synthbrew works
Model your schema
Use the schema editor or AI prompt flow, then keep immutable versions.
Generate and regenerate
Populate seeded relational data now, and regenerate with controlled defaults.
Integrate instantly
Connect your app with runtime CRUD API endpoints and source API keys.
Core capabilities in one platform
Built for a clean and practical workflow: schema design, data generation, runtime access, and team controls.
Schema modeling + immutable versions
Define tables and relationships once, then publish versions your sources can pin to.
- Visual editing and AI-assisted schema creation
- Version history with stable references
- Per-source schema pinning for controlled changes
Schema editor preview
users
id, email, created_at
orders
id, user_id, total
subscriptions
id, user_id, status
Screenshot placeholder: replace with schema builder capture.
Seeded generation control
Control row volume, locale, timezone, and seed so environments stay reproducible.
- Deterministic regeneration with seeds
- Per-entity row distribution
Generation controls
Runtime API + key auth
Each source exposes CRUD endpoints and uses source-level API keys for runtime access.
- GET, POST, PATCH, DELETE per table
- `x-api-key` runtime authentication
Runtime endpoint
/api/runtime/:sourceId/:tableTeam workflows
Collaborate with role-based access, invite links, and usage visibility.
- Owner/admin/member permissions
- Scoped invites with expiry and max uses
Optional read-only Postgres access
On supported plans, provision a dedicated read-only Postgres user for a source schema.
- Dedicated credentials per source
- Connection URL shown once on provision/rotation
Short product clip placeholder
Suggested: 6-10s read-only DB access walkthrough.
Product proof, not promises
Runtime API example
GET /api/runtime/{sourceId}/users
POST /api/runtime/{sourceId}/orders
PATCH /api/runtime/{sourceId}/orders/{id}
DELETE /api/runtime/{sourceId}/orders/{id}
Headers:
x-api-key: sb_src_********************************Generation event timeline
queued
Generation request accepted and waiting to run.
active
Schema compile + data seeding in progress.
success
Rows inserted and runtime namespace updated.
Runtime calls use x-api-key with source API keys.
Where teams use Synthbrew
Frontend delivery before backend completion
Ship product flows and polish UX while backend APIs are still in progress.
Reproducible QA/test environments
Regenerate known states with the same seed to reproduce and verify fixes.
Production-like demos
Show realistic data and interactions without hardcoding brittle mocks.
Why not just use static generators or JSON files?
| Capability | Synthbrew | Static data generators |
|---|---|---|
| Live CRUD endpoints | Built in per source | Not available |
| Seeded regeneration | Deterministic | Manual reruns |
| Schema versioning | Immutable versions | Ad hoc |
| Team permissions + invites | Role-based and scoped | Usually absent |
Build with production-like data before production backend exists.
Start with a schema. Generate data. Integrate your frontend today.
Create your first source