Boundary brings Django’s productivity and Rails' conventions to Clojure — with functional programming rigor.
It is a batteries-included web framework that enforces the Functional Core / Imperative Shell (FC/IS) pattern:
pure business logic in core/, side effects in shell/, and clean interfaces through ports.clj protocols.
20 independently publishable libraries on Clojars — use only what you need
Scaffolder that generates production-ready modules (entity + routes + tests) in seconds
Auto-generated admin UI from your schema — no manual forms
Built-in observability, RFC 5988 pagination, and declarative interceptors
Framework-aware AI tooling — NL scaffolding, error explainer, test generator, SQL copilot
| I want to… | Go to |
|---|---|
Try Boundary in minutes | Quickstart |
Understand the design philosophy | Why Boundary? |
Learn the core architecture | Functional Core / Imperative Shell |
Add a module to an existing app | Create a Module |
Browse all 20 libraries | Library Overview |
# Start a new project
curl -fsSL https://raw.githubusercontent.com/thijs-creemers/boundary-starter/main/scripts/bootstrap.sh | bash
cd boundary-starter && bb setup
# REPL-driven development
export JWT_SECRET="change-me-dev-secret-min-32-chars"
export BND_ENV="development"
clojure -M:repl-clj
# Scaffold a new module (interactive)
bb scaffold
# Run all tests
clojure -M:test:db/h2Can you improve this documentation?Edit on GitHub
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