GraphQL for Delphi is a fully spec‑compliant GraphQL library designed specifically for Delphi developers. It provides a complete toolset for parsing, validating, executing, and serving GraphQL queries across multiple platforms including Windows, Linux, macOS, Android, and iOS. The library includes a full document parser, schema creation support, introspection, validation, and execution components—all tightly aligned with the official GraphQL specification. With integrated GraphQL-over-HTTP handling, automatic JSON serialization, a built‑in GraphQL Playground, and extensibility through custom schema types and HTTP frameworks, GraphQL for Delphi enables rapid development of modern API‑driven applications. The solution includes both a Free Edition and a Registered License, with the registered edition enabling commercial use, source code access, and premium support.

Features

Full GraphQL Document Parser Supports:

• Full spec‑compliant document lexer
• Executable and type definition documents
• Operations
• Selection sets
• Fields, arguments, aliases
• Fragments (inline, type conditions)
• Input values
• All GraphQL types
• Variables
• Type references (List, Non‑Null)
• Directives GraphQL Schema Support Includes:
• Query & Mutation root types
• Scalars: Int, Float, String, Boolean, ID
• Objects, field arguments, field deprecation
• Interfaces, unions, enums
• Input objects
• List and non‑null types
• Directives including @skip, @include, @deprecated Execution Support (Spec‑Compliant)
• Execute GraphQL documents against a schema
• Selection set execution
• Variables, coercion, error handling
• Skip/include directive handling
• Field resolvers & abstract type resolvers
• Automatic field resolver binding using RTTI GraphQL over HTTP
• Handler compliant with upcoming GraphQL‑over‑HTTP specification
• WebBroker dispatcher component
• Deployment options: Windows, Linux, Apache, IIS, FastCGI, Standalone
• Automatic JSON serialization & deserialization Built‑in GraphQL Playground
• Web‑based IDE for query execution & debugging
• Fully customizable (themes, title) Extensibility
• Abstract HTTP request/response allows use with any Delphi HTTP framework
• Custom GraphQL types (incl. scalars) supported
• Full API documentation included Platform & Delphi Version Support
• Windows, Linux, macOS, Android, iOS
• Delphi versions: 10 Seattle → latest Notes
• Unsupported (in progress): Type extensions, subscriptions
• Linux requires Delphi Enterprise
• WebBroker functionality determines some deployment capabilities Comparison Table Highlights
• All core features available in both Free & Registered editions
• Registered Edition adds: Commercial use, source code, premium support

Benefits

• Enables Delphi developers to build fully spec‑compliant GraphQL servers without external dependencies
• Cross‑platform support allows deployment of modern APIs on Windows, Linux, macOS, Android, and iOS
• Built‑in GraphQL Playground enhances debugging, introspection, and testing
• Automatic JSON handling reduces boilerplate code
• Extensible design supports custom scalar types, interfaces, and resolvers
• Strong validation and error reporting ensure reliability and standard compliance
• Ideal for microservices, API gateways, mobile backends, and modern application architectures
• Premium support available for enterprise‑grade projects