Canvas and DSL — model the full medallion stack
Sketch bronze, silver, and gold in one diagram, or write DSL and watch the canvas follow. Keys, roles, and relationships stay in sync both ways.
Schema review for warehouse teams
Review schema changes before they hit production
Diff planned changes against your live Snowflake, Databricks, or Postgres warehouse, get team approval, and hand off SQL, dbt, and contracts from one workspace.
Free plan, no cardRead-only by defaultdbt-native handoff
Works with your warehouse
SnowflakeDatabricksPostgreSQLMySQLdbtApache IcebergGitHub
The problem
Schema changes ship faster than anyone can review them
DDL runs in a console, the diagram drifts in a wiki, and the contract lives in a doc. Nothing reviews the change before it reaches production.
Changes ship without review
DDL gets run straight in a console or buried in a migration. Nobody sees the blast radius until something downstream breaks.
dbt models and BI dashboards break in production.
The warehouse drifts
The diagram in the wiki stopped matching reality months ago. Nobody trusts it, so nobody keeps it current.
Decisions made against a schema that no longer exists.
Diagrams and deploys disconnect
Modeling lives in one tool, DDL in another, contracts in a third. Keeping them in sync is manual and lossy.
Copy-paste errors between diagram, console, and PR.
How it works
One reviewed path from model to production
Five steps, one workspace — no copy-pasting DDL between a diagram tool, a console, and a pull request.
Model
Design on canvas or in DSL, or import from SQL, dbt, or a live warehouse.
Diff
Compare the planned schema against live warehouse state, column by column.
Review
Share an approval link; reviewers see exactly what's added, dropped, and breaking.
Approve
Sign off with a dry-run validated against production before any DDL runs.
Hand off
Push reviewed DDL, or hand off SQL, dbt models, and data contracts.
The workspace
Everything between a schema idea and a safe deploy
Approvals that gate DDL
Shareable review links. Reviewers see added, dropped, and breaking — then sign off.
Contracts that stay green
Owners, SLAs, and column rules — exported to ODCS, dbt, Soda, and GE, validated in CI.
Drift watch, in CI and on a schedule
When production diverges from the reviewed model, you find out from SchemaStruct — not from a broken dashboard.
Why SchemaStruct
Not another ERD tool
Diagrams, docs, and catalogs all describe your schema. None of them review the change before it ships.
ERD & diagram toolsPretty diagrams that drift from the warehouse the moment they're drawn.Diffs live state and pushes reviewed DDL.
dbt docs & CloudDocuments models, but review happens after the change already ran.Review and approve before any DDL runs.
Data catalogsInventory what exists; they don't model or gate what's coming next.Design, contract, and hand off in one flow.
Whiteboards & docsFree-form sketches with no types, keys, or connection to production.Warehouse-aware models with real types and FKs.
Security & governance
Enterprise-ready by design
SchemaStruct touches your warehouse with the least privilege possible and keeps every change auditable.
Read-only by default
Introspection uses read-only credentials. Writes only happen through reviewed, dry-run-checked DDL you approve.
Dry-run before any DDL
Every push is validated against live warehouse state first, so a plan never surprises production.
Git-native workflow
GitHub sync, a CI CLI, and PR comments on schema diffs — review lives where your team already works.
Shared workspace controls
Team workspace management, shared review links, and centralized billing. SSO and granular admin controls are on the Enterprise roadmap.
Auditable change log
Version history tracks every schema and contract change, with diff summaries you can replay or roll back.
Security & procurement
We support security questionnaires and procurement workflows — talk to us about data handling and team rollout.
Reviewing data handling or compliance posture? Talk to us →
Pricing
Start free, upgrade when you ship together
Model and diff for free. Paid plans add cloud save, review approvals, warehouse sync, and team workspaces.
Free
₹0/ forever
For trying schema design and review before you need shared delivery workflows.
- Up to 5 saved diagrams
- Canvas + warehouse-aware DSL editor
- Visual schema diff & version compare
- SQL & file import, validation, auto-layout
- Snowflake-ready SQL export
PopularPro
₹199/ user / mo
For individual data builders who need cloud save, reviews, and handoff outputs.
- Everything in Free, plus
- Unlimited diagrams + cloud save & sync
- Shareable review & approval links
- AI schema generation, copilot & star-schema drafts
- dbt import/export + published data dictionary
Team
₹1,499/ user / mo
For warehouse teams collaborating on reviews, delivery, and published docs.
- Everything in Pro, plus
- Up to 10 members + shared workspace sync
- Snowflake & Databricks introspection
- GitHub CI/CD sync & diff-driven review
- Workspace roles & admin controls
Prices in INR.Compare all features
Stop shipping blind
Every unreviewed schema change is a downstream break waiting to happen
Diff it, review it, and hand it off — before it ever reaches production.