Tables, relationships and validation created visually — as real SQL schema, with previewed migrations, in a Postgres or MySQL database you own.
Already have tables? Import the schema and keep working — nothing changes without a previewed migration.
14-day Pro trial • No credit card required • Free forever tier after
No database to bring? Try our live Acme Store demo → or sign up to spin up your own.
Demo credentials: demo@schemastack.io / demodemo — editor role, changes aren't saved.
Paste one URL into Claude or ChatGPT and an agent can browse your schema, query records and enter data — inside the permissions you chose, and nowhere else.
Add SchemaStack as a connector in Claude or ChatGPT — the agent finds its own way in, you approve it on a consent screen that names the app, the workspace and exactly what it may do. Nothing to configure, no key to paste.
An agent that may write records still can't touch your schema — consenting to "write" never means "drop a column". Workspace access levels cap everything, and revoking an app cuts off its tokens immediately, not when they expire.
Claude Desktop, Claude Code and Cursor connect with an API key that carries its own access level and can be scoped to specific views. 57 tools, from querying rows to previewing schema migrations before they run.
SchemaStack is a platform — we serve a few distinct audiences well. You're probably one of these.
You're a developer or agency delivering a collaborative data tool to a client. You need spreadsheet UX, guest access, and a REST API — without hosting your client's data. Custom-building takes weeks you don't have; Retool is internal-only; Airtable sends the data to a place your client can't approve.
Airtable's linked records hit a wall. You need real relationships — M2M, 1:N, composite keys — and cross-field validation. And you'd rather the data live in your own Postgres than another vendor's cloud.
Product catalogs, inventory, vendor lists, configuration — in Google Sheets or Airtable, and it's breaking. You need validation, collaboration, and a setup IT won't reject on data-residency grounds.
Contentful is expensive, Strapi means self-hosting, Sanity locks you in. You want structured content with a REST API — living in your own Postgres, where you control backups, residency, and exit.
The common thread: managed software, self-owned data.
Connect your database or use managed hosting — either way, your data stays yours
Add a column in the UI and a real column appears in your database — types, foreign keys, M2M junctions, constraints and indexes. Works the same on tables you import as on ones you create, and every structural change is previewed as a migration before it runs.
Describe your data in plain English and Schema Advisor suggests a validated schema — entities, columns, constraints, relationships. Edit it, keep it, or ignore it. You're never locked into AI output.
View and edit your data through a familiar interface with real-time collaboration. Create custom views with filters, sorting, and presets for every workflow.
Every workspace automatically gets a full REST API with CRUD operations, filtering, pagination, and Swagger docs. No code generation — the API is live as soon as your schema is defined.
SchemaStack connects to your existing database and only stores metadata. Your business data never leaves your infrastructure — no vendor lock-in, ever.
Don't want to run Postgres yourself? Use our Managed RDS or Enterprise ZFS hosting. Even managed, your database is dedicated to your org — no shared multi-tenant database, no data commingling, portable out anytime.
Each workspace gets its own database connection — no cross-tenant data commingling. Granular permissions, member roles, and external guest access built in.
Create guest links for clients, contractors, or auditors — they see only the view you share, with read or edit access. Time-limited, revocable, no org membership required.
Four layers that give you powerful tools while keeping your data under your control
Access your data anywhere with RESTful APIs and Model Context Protocol
Work together in real-time with your team on shared schemas
Define, validate, and manage your data structures with precision
Connect any PostgreSQL or MySQL database — AWS RDS, Supabase, Neon, and many more
All layers work together seamlessly — or use just what you need
Start BuildingThree simple steps to transform your schema management workflow
Bring your own database or let us host one for you. SchemaStack connects to your infrastructure — your data stays yours.
Set up entities, columns, types, and validation rules. Your data structure is explicit, versioned, and enforced.
Invite your team, create views, and use the auto-generated REST API to integrate with anything.
Agencies and product teams deliver client-facing data tools on SchemaStack — without hosting the client's data themselves.
Keep every client in their own organisation with their own workspaces, members and roles — and their data in their own database, where their IT can approve it.
Share a single view with a client, contractor or auditor — read or edit, time-limited, revocable. They see exactly the table you shared and nothing else, with no organisation membership required.
Point a workspace at the client's Auth0, Clerk or Firebase and their end-users call the generated REST API with their own identities — filtered by row-level security, so each user sees only their own records.
Choose the plan that's right for your team. Start free, upgrade anytime.
For individuals and small projects
Get Started FreeFree for 14 days • No credit card required
For growing teams and production workloads
Start Free TrialFor large organizations with custom needs
Contact SalesEvaluating against another tool? See the honest, head-to-head breakdowns — and where SchemaStack fits into stacks you may already have.
| Airtable | NocoDB / Baserow | Directus | SchemaStack | |
|---|---|---|---|---|
| Data lives in a database you own | No | If you self-host | Yes | Yes — hosted anyway |
| Editing the UI creates real SQL schema, with previewed migrations | No | Partially | In admin settings, no dry run | Yes |
| Spreadsheet UX for non-technical people | Best in class | Yes | Admin-tool style | Yes |
| Instant REST API with OpenAPI docs | Yes | Yes | Yes | Yes, per workspace |
| AI agents: one-URL connector, consent, scopes, instant revocation | No | No | MCP server only | Yes |
| Guest access without accounts | Paid tiers | Partially | Item shares only | Yes — view-scoped links |
Same spreadsheet-style interface — but your data stays in your own Postgres or MySQL, with a real REST API and flat pricing instead of per-seat.
Retool is for internal tools. SchemaStack is for the client-facing data tool you're about to ship — with guest access and no per-seat pricing.
Already on Supabase? Give your non-technical teammates a spreadsheet-style editor on top of your existing database — no migration needed.
Both keep your data in a database you own. We host the software for you — and add an AI layer that previews a migration before it runs.
Directus administers a schema that already exists. SchemaStack is the spreadsheet that builds it — hosted, with previewed migrations and governed AI-agent access.
Baserow wants to be the home of your data. We join the Postgres or MySQL you already run — and host the interface on top of it.
Everything you need to know about SchemaStack
Start with your own Postgres or MySQL. Keep it that way.
Free forever · No credit card required · 2 minute setup