Build GraphQL Schemas Visually with Real-Time Code Generation
A powerful tool for designing GraphQL schemas through a visual interface. Create types, queries, mutations, and subscriptions, then generate production-ready code in multiple formats.
The GraphQL Schema Generator provides a visual interface for designing GraphQL schemas. Whether you're building a new API from scratch or analyzing existing schemas, this tool simplifies the process with drag-and-drop functionality and instant code generation.
Tip: Use the "Import" tab to introspect existing GraphQL endpoints and import their schemas automatically.
Schema elements define the structure of your data types. The sidebar provides drag-and-drop access to all GraphQL type definitions.
The primary building block representing structured data with multiple fields. Use for entities like User, Product, etc.
Special type for mutation input arguments. Ensures type safety for data being submitted to the server.
A special scalar type restricted to a predefined set of values. Perfect for status fields and categorical data.
Leaf node types like String, Int, Boolean, Float, ID. Can also define custom scalars for special data.
Abstract type that defines a set of fields which concrete types must implement. Enables polymorphic queries.
Abstract type that represents a set of possible types. Allows a field to return one of several types.
Note: All elements can be edited after creation by clicking the edit button on their card. Fields can be added, modified, or removed at any time.
Operations define the entry points into your GraphQL API. Three types of operations are supported, each serving a specific purpose.
Read-only operations for fetching data. Every GraphQL schema must have at least one query. Examples: getUser, listProducts, etc.
Write operations that modify server-side data. Used for creating, updating, or deleting resources. Examples: createUser, updatePost.
Long-lived connections for real-time updates. Clients receive updates when data changes. Examples: onNewMessage, onPriceChange.
Jump-start your schema design with pre-built templates. The tool includes a variety of common schema patterns that you can apply instantly and customize for your needs.
Complete e-commerce schema with Products, Orders, Customers, Categories, Reviews, and related queries and mutations.
Content management schema with Posts, Authors, Comments, Tags, Categories, and media handling.
Social platform schema with Users, Posts, Comments, Likes, Follows, Messages, and Notifications.
Tip: After applying a template, you can modify any type, add or remove fields, and customize operations to fit your specific requirements.
The field editor allows you to configure individual fields within your types with comprehensive options for type safety and documentation.
The Visual Schema Designer provides an intuitive drag-and-drop interface for building your GraphQL schema. Simply drag elements from the sidebar into the canvas to create types, queries, mutations, and subscriptions.
Quickly find any element in your schema with the built-in search functionality. Search across types, queries, mutations, and subscriptions by name, field, or type.
Press Ctrl+K or use the search bar to quickly find any schema element. Results show matching types, queries, mutations, and subscriptions.
Click on search results to jump directly to that element in the schema builder. Perfect for navigating large schemas.
Import schemas from existing GraphQL endpoints to analyze, document, or use as a starting point for new projects. This feature uses GraphQL's built-in introspection capabilities.
Enter your own GraphQL endpoint URL to introspect any standards-compliant GraphQL API. Supports authentication via headers.
Add custom HTTP headers (like Authorization) for authenticated endpoints. Each header on a new line: Key: Value
Tip: Use introspection to reverse-engineer APIs, generate documentation, or create TypeScript types from existing GraphQL backends.
The Schema Linter helps you maintain high-quality schemas by checking for common issues, best practices violations, and potential problems. It runs automatically as you make changes or can be triggered manually.
Critical issues that will cause schema validation failures. Must be fixed.
Issues that may cause problems but don't block schema generation. Recommended to fix.
Suggestions for improving schema quality and best practices.
Tip: Configure which rules are enabled in the linter settings. Toggle auto-lint to run checks only when you click "Run Lint".
The Query Playground allows you to write, test, and execute GraphQL queries against your schema. It provides a complete environment for exploring your API with syntax highlighting, auto-completion, and response visualization.
Write GraphQL queries with syntax highlighting. Support for multiple operations, variables, and fragments.
Define query variables and HTTP headers (including authentication) for your requests.
Automatically saves your query history. Click on any past query to reload it into the editor.
Browse your schema types, queries, and mutations. Click to auto-insert into the query editor.
Generate realistic mock data for your GraphQL types. Perfect for testing, prototyping, and development. The generator uses intelligent field name detection to produce meaningful data.
Standard JSON array of mock objects. Ready to use in tests or as fixture data.
TypeScript interface with mock data array. Full type safety for your tests.
Ready-to-use GraphQL mutation scripts for seeding your database.
The Code Generator produces production-ready code from your schema in multiple formats. Switch between the Preview tab and select your desired output format.
Standard GraphQL Schema Definition Language. Ready to use with Apollo Server, graphql-yoga, or any GraphQL server implementation.
Full TypeScript type definitions including interfaces for all types, input types, and common type helpers like Maybe and Exact.
TypeScript resolver skeleton with Context type, GraphQLResolveInfo, and placeholder implementations for all queries, mutations, and subscriptions.
Database-agnostic Prisma schema with models generated from your types. Ready to use with PostgreSQL, MySQL, SQLite, or MongoDB.
MongoDB Mongoose schemas with TypeScript interfaces, document definitions, and model exports for each type.
Complete Apollo Server setup with typeDefs, resolvers, and context configuration.
Apollo Client configuration with cache policies, authentication setup, and query/mutation definitions.
Custom React hooks (useQuery, useMutation) with TypeScript types for each operation in your schema.
GraphQL Code Generator configuration file for automatic type generation.
Apollo REST Data Source wrapper for converting REST APIs to GraphQL.
Java entity classes with JPA annotations, DTOs, and GraphQL resolvers.
Python Strawberry GraphQL type definitions with input types and resolvers.
Python Pydantic models with create and update schemas for each type.
Go types with gqlgen annotations, input types, and resolver scaffolding.
Configuration for schema stitching and federation with gateway and middleware setup.
Tip: The code generator includes schema validation that checks for common issues like missing Query types, naming convention violations, and empty schemas.
Each output format generates optimized, production-ready code. Below are examples of what you can expect from each format.
type User {
id: ID!
name: String!
email: String!
posts: [Post!]!
}
type Post {
id: ID!
title: String!
content: String!
author: User!
createdAt: DateTime!
}
type Query {
users: [User!]!
user(id: ID!): User
}export interface User {
id: string;
name: string;
email: string;
posts: Post[];
}
export interface Post {
id: string;
title: string;
content: string;
author: User;
createdAt: Date;
}Note: The code generator includes schema validation that checks for common issues like missing Query types, naming convention violations, and empty schemas.
The Docs tab generates professional API documentation in Markdown and HTML formats. Include project metadata like name, description, and version for comprehensive documentation.
GitHub-flavored Markdown with syntax highlighting, field documentation, and deprecation notices. Perfect for API docs and README files.
Standalone HTML documentation with embedded styles. Can be hosted on any web server or converted to PDF for offline distribution.
Tip: Include field descriptions in the Field Editor to generate comprehensive API documentation with usage examples.
Save snapshots of your schema at different points in time. This feature allows you to version your schema, track changes, and restore previous versions when needed.
Save snapshots with custom names, descriptions, and tags (production, staging, development, experimental, stable).
One-click restore to any previous snapshot. Perfect for rolling back after making unwanted changes.
Compare two schema versions side-by-side to see exactly what changed. The diff view highlights additions, removals, and modifications in your schema.
Types, fields, queries, or mutations that were added to the schema.
Elements that were removed from the source schema.
Fields that changed type, required status, or other properties.
Generate migration scripts to transform your schema from one version to another. Create documented, version-controlled migrations for your project.
Share your schema with team members, import/export projects, and connect to schema registries for centralized management.
Generate a shareable URL that encodes your entire schema. Anyone with the link can view and import it.
Export complete project as JSON or import existing projects. Supports file upload and paste JSON.
Connect to Apollo Graph Manager, Hive, Space, or custom registries to sync your schema.
Tip: The URL encoding uses compression to minimize length, but very large schemas may result in long URLs.
Customize the appearance of your code editor with multiple syntax highlighting themes. Choose from popular code editor color schemes to match your preferences.
Perform bulk operations on multiple schema elements at once. Save time by editing, deleting, or duplicating types and operations in batches.
Select multiple types or operations to apply changes to all at once.
Remove multiple schema elements with a single action.
Clone types or operations to create variations quickly.
Export only selected elements instead of the entire schema.
Export your schema in multiple formats for different use cases and workflows.
Quickly copy generated code to your clipboard for immediate use. Works with all output formats.
Download generated code as files with appropriate extensions (.graphql, .ts, .prisma, .md, .html).
Push your schema directly to a GitHub repository for version control and team collaboration.
Design your schema visually before writing code. Generate type definitions and resolver skeletons to jumpstart development.
Generate comprehensive API documentation from existing schemas. Export Markdown for GitHub or HTML for hosted docs.
Import and visualize third-party GraphQL APIs. Understand API structure and available types before integration.
Generate Prisma or Mongoose schemas from your GraphQL types for seamless database integration.
Generate TypeScript types from your schema to ensure end-to-end type safety across your GraphQL API and frontend.
Quickly prototype GraphQL APIs with placeholder resolvers. Export working scaffolding for client and server teams.