Boundary is a batteries-included Clojure 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.
24 independently publishable libraries on Clojars — use only what you need (plus boundary-cli and boundary-devtools)
Scaffolder that generates fully structured 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 | Getting Started |
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 24 libraries | Library Overview |
# Install Boundary (JVM, Clojure CLI, Babashka, bbin, boundary CLI)
curl -fsSL https://get.boundary-app.org | bash
# Start a new project
boundary new my-app
cd my-app
# Add optional modules
boundary add payments
boundary list modules
# 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? These fine people already did:
Thijs Creemers & thijscreemersEdit on GitHub
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