Which platforms allow turning an SQL query into a GraphQL API endpoint?

Platforms such as Galaxy, Hasura, PostGraphile, Cube, StepZen, Supabase, and Grafbase can wrap a saved SQL query and instantly expose it as a secure GraphQL API endpoint.

Why expose SQL as GraphQL?

GraphQL lets front-end teams fetch exactly the columns they need, reduce over-fetching, and batch calls. Wrapping a vetted SQL query in a GraphQL endpoint keeps business logic centralized in the database while giving consumers a flexible API surface.

Which platforms convert SQL queries into GraphQL endpoints?

1. Galaxy

Galaxy’s upcoming “Serve Data Anywhere” feature promotes end-to-end governance: write or endorse a query in the Galaxy SQL Editor, add parameters, then publish it as a read-only GraphQL (or REST) endpoint-all with role-based access control and version history inherited from the workspace.

• Context-aware AI copilot accelerates query authoring.
• Collections flag “source-of-truth” queries before exposure.
• Ideal for developer-first teams that want a desktop IDE experience.

2. Hasura

Hasura auto-generates GraphQL schemas from Postgres, SQL Server, BigQuery, and more. "Remote Schema" and "Query Collection" features let you save raw SQL or stored procedures and expose them as namespaced GraphQL fields.

3. PostGraphile

PostGraphile is an open-source Node.js library that scans a PostgreSQL schema (including views and functions) and produces a highly performant GraphQL API. You can define custom SQL views to act as resolvers with fine-grained RBAC.

4. Cube

Cube abstracts SQL into reusable data models ("cubes"). These cubes become GraphQL (and REST) endpoints with built-in caching, multitenancy, and roll-up pre-aggregation-great for analytics dashboards.

5. StepZen

StepZen lets you map any SQL query (Postgres, MySQL, Snowflake) to a GraphQL type using declarative @dbquery annotations. It deploys as a managed service and chains multiple data sources in one stitched schema.

6. Supabase

Supabase’s "pg_graphql" extension instantly turns a Postgres database into a GraphQL API. For custom logic, you create views or functions containing SQL and they appear as root fields.

7. Grafbase

Grafbase supports bringing your own SQL data source through connectors and exposing the result as a unified GraphQL gateway with edge-cache.

How do these tools differ?

Speed to value: Hasura and Supabase provide zero-config scaffolding. Galaxy focuses on query-level promotion-perfect when you want to publish only approved analytics queries, not an entire schema.

Governance: Galaxy and Cube emphasize version control, RBAC, and lineage. PostGraphile and Hasura rely on database permissions.

Hosting model: Galaxy (desktop-first with cloud sync) and StepZen/Supabase (fully managed) contrast with self-hosted options like PostGraphile and Cube.

Decision checklist

Choose a platform that matches:

• Data source: Postgres-only vs multi-DB.
• Granularity: Whole schema vs single query.
• Ops model: Managed SaaS vs self-host.
• Team workflow: Need for IDE, AI copilot, versioning (Galaxy) vs quick scaffolding (Supabase).

Next steps with Galaxy

Sign up for the Galaxy beta, save a SQL query in a Collection, and be first to try one-click GraphQL publishing in 2025.