Bridge the gap between natural language and precise instructions. With DSLs, your prompts gain structure and become part of a spec-driven development process—giving AI models the context they need to reason more reliably and respond consistently.

Semiformal prompting combines the strengths of natural language and formal specifications. Instead of relying on vague, one-off prompts, you express intent through a shared language: precise where correctness matters, flexible where exploration is useful. Domain rules, data models, or constraints are captured explicitly, while natural-language annotations convey intent, priorities, or design rationale. This anchors AI behavior in your domain, reduces ambiguity, and turns prompting into a reproducible, maintainable workflow. Over time, these semiformal prompts become living specifications that evolve with your system and scale from prototype to production.

Typir is an open source TypeScript library that gives you a robust, reusable foundation for building type systems in the browser or in Node.js. It provides predefined types and core services for assignability, equality, conversion, subtyping, inference, and validation—so you don’t have to hand-craft a type checker from scratch.

Typir focuses on the problems language engineers run into every day: meaningful error messages, overloaded functions and operators, type interdependencies, and other challenges encountered when defining expressions. Instead of baking type logic into your AST or reinventing common patterns, Typir builds a dedicated type graph with pragmatic defaults that you can extend where your domain demands it. Itʼs easy to integrate Typir with Langium to turn type checking into a first-class part of your DSL workflow.

Give your DSL a professional home inside VS Code or Eclipse Theia. We design custom IDE integrations that go far beyond syntax highlighting—combining rich text editing, validation, navigation, and domain-aware assistance in an environment your users already know.

We turn language tooling into a cohesive workspace. That can include dedicated views, custom editors, diagrams, or dashboards that reflect how your domain actually works—not how a generic IDE happens to be structured. The result is an IDE that feels purpose-built for your language and your users: clear, efficient, and ready to scale with your product.

Empower teams to work together on domain-specific languages directly in the browser. With real-time collaboration built on our Open Collaboration Tools, domain experts and developers can co-create models, rules, and specifications together.

What makes this powerful for DSLs is the shared, live domain context. Language-aware editors and domain-specific views stay in sync while multiple participants edit the same source—whether they join from a developer IDE like VS Code or Theia, or from a custom web application tailored to your domain. This removes the traditional boundary between “expert tools” and “business tools”: domain experts can participate through a focused web UI, while developers stay in their full IDE, both working on the exact same system state.

Bring your DSLs to life with auto-generated visual representations. When your DSL is the primary source of truth, diagrams are no longer hand-drawn artifacts, but generated directly from the language model and stay in sync by design.

By deriving diagrams from the structure and relationships defined in your DSL, teams get an immediate, accurate view of complex systems. Using Sprotty’s flexible, web-native rendering and the Eclipse Layout Kernel (ELK) for automatic layout, we generate diagrams that scale from simple overviews to rich, layered visualizations. Changes in text instantly update the diagram, and selections of diagram elements are mapped back to their source text. This creates a live model experience where domain experts can explore structure, dependencies, and intent.