Intuitive DSL for Java

A zero-dependency developer-friendly engine designed to build and execute Domain Specific Languages using an intuitive iBNF syntax. Built with Java 17+ and optimized for GraalVM Native Image, the engine provides a zero-boilerplate approach to turning complex string commands into type-safe Java executions.

Getting Started Browse Repository

Business Use Cases

From Semantic Firewalls for GenAI to Native CLI Tools: see how the engine integrates into your applications.

Semantic Firewall for GenAI

Act as a deterministic intermediation layer for your AI Agents. Translate unstructured intents into secure backend method calls, ensuring reliable execution on your critical systems with zero risk of hallucination.

Read LLM Use Case Mission-Critical B2B Consoles

Embed secure business terminals directly into your Spring Boot or Quarkus backends. Empower your support operators to execute complex actions rapidly.

Read Console Use Case Business Rules Engines

Bridge the gap between code and business analysts. Define complex business rules as pseudo-natural sentences using our iBNF grammar.

Read Rules Engine Use Case GraalVM Native CLI Tools

Break past the limitations of standard libraries. Build powerful standalone utilities with zero dependencies, natively compiled via GraalVM.

Read Native CLI Use Case

Powerful Features

Engineered for the Modern Java Ecosystem

A developer-friendly engine with zero dependencies and zero boilerplate. Securely parse and execute complex commands with deterministic precision, ensuring seamless integration into your mission-critical stack.

Zero Boilerplate

Define your grammar in a single annotation and bind parameters directly to fields or methods. No external files needed.

Intuitive BNF (iBNF)

A human-readable syntax supporting required or optional groups, alternatives, and repetitions effortlessly.

Zero Dependency

A pure Java implementation relying on no third-party libraries, ensuring a clean classpath and zero version conflicts.

GraalVM Native Ready

Uses MethodHandles instead of heavy reflection for high-performance injection, fully compatible with AOT compilation.

Dynamic Late-Binding

Resolve parts of your grammar at runtime. Validate user inputs against your live business state.

Compiler-Grade Errors

Provide exceptional UX with rich error messages featuring visual pointers and expected token lists.

Conflict-Free Parsing

An advanced LL(k) recursive descent parser handles complex grammar ambiguities effortlessly.

Defensive by Design

Strict grammar validation at startup. The engine fails fast if your iBNF is malformed.

Library

Technical resources and implementation guides.

Guide

Getting Started

Read Syntax

Introduction to iBNF

Read Core

Architecture & Core Concepts

Read Security

The Zero-Injection Promise

Read Advanced

Dynamic Macros & Late-Binding

Read Integration

Spring Boot & Quarkus

Read

FAQ

Need clarification?

What is Intuitive DSL for Java?

Intuitive DSL for Java is a zero-dependency library for building and executing deterministic command languages inside Java applications.

Is it a parser generator?

No. The grammar is defined directly in Java and compiled at runtime during registration.

How is it different from ANTLR or Picocli?

It is built for deterministic, business-oriented command DSLs embedded inside Java applications.

Can I define the grammar directly next to the code?

Yes. The grammar lives alongside the command implementation.

Does it work with Spring Boot or Quarkus?

Yes. The product is positioned for integration into modern Java applications.

Is it compatible with GraalVM Native Image?

Yes. The architecture is optimized for native-friendly execution.

Why zero dependency?

Because critical components should stay auditable, lightweight, and operationally predictable.

What kinds of systems is it built for?

Semantic firewalls for GenAI, mission-critical B2B consoles, business rules engines, and native CLI tools.

What license is available?

Open-source AGPL for public/community use, with commercial licenses for proprietary and distributed software.

Transparent Dual-Licensing Model

Built for mission-critical environments. Intuitive DSL Engine for Java operates under a strict dual-license model: open for the community, commercially licensed for proprietary enterprise software.

Open Source

FREE

For public-facing projects and community software. Perfect for academic projects and open-source software.

Licensed under AGPL-3.0. You can use the engine for free, provided that your entire application's source code is also made public under the same AGPL-3.0 license. No proprietary or closed-source distribution is allowed without a commercial waiver.

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Project

CHF 995

per year

Usage in 1 private project within the organization.

Removes AGPL-3.0 obligations for one private, non-distributed application.

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Corporate

CHF 3 995

per year

Usage in unlimited private projects within the organization.

Full corporate waiver for all private, non-distributed applications.

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Distributed

CHF 9 995

per year

Usage in 1 distributed application or network-accessible service.

Required for any proprietary (closed-source) application distributed to third parties or accessible via a network. This applies even if your application or service is provided free of charge.

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