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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.
The field editor allows you to configure individual fields within your types with comprehensive options for type safety and documentation.
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 Code Generator tab produces production-ready code from your schema. Switch between visual and code views in the Schema Preview panel to access code generation features.
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.
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.
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.