bb scaffold ai "product module with name, price, stock"Clojure is an excellent language for building reliable systems, but the ecosystem lacks opinionated, batteries-included frameworks. Most projects start from scratch, wiring together Ring, Reitit, next.jdbc, Malli, Integrant, and a dozen other libraries. Each project reinvents the same patterns — authentication, pagination, validation, admin UIs — differently.
Boundary packages the best-practice assembly of these libraries into a coherent whole, with one non-negotiable rule: the Functional Core / Imperative Shell pattern is enforced at every layer.
Use just boundary-core for validation utilities in an existing app,
or compose the full stack with JWT + MFA auth, auto-generated CRUD UIs,
background jobs, multi-tenancy, real-time WebSockets, and more.
Every library follows the same FC/IS structure, making any Boundary codebase instantly familiar.
bb scaffold ai "product module with name, price, stock"The scaffolder generates production-ready modules (entity + routes + tests) in seconds. The admin UI auto-generates CRUD interfaces from your schema — no manual forms. Built-in observability, RFC 5988 pagination, and declarative interceptors mean you write business logic, not plumbing.
Each library is a standard deps.edn dependency. Swap what doesn’t fit.
If you don’t need multi-tenancy, don’t include boundary-tenant. If you prefer a
different caching backend, implement the ICache protocol.
The most important property Boundary enforces is the separation between pure and impure code:
libs/{library}/src/boundary/{library}/
├── core/ ← Pure functions only. No I/O, no logging, no exceptions.
├── shell/ ← All side effects: persistence, HTTP, services.
├── ports.clj ← Protocol definitions (interfaces).
└── schema.clj ← Malli validation schemas.This keeps business logic:
Fast to test — no mocks needed for core functions
Easy to reason about — given the same input, always the same output
Safe to refactor — the type system and tests catch regressions immediately
| Property | Boundary | Pedestal | Luminus |
|---|---|---|---|
Enforces FC/IS | Yes | No | No |
Scaffolder | Yes (AI-assisted) | No | Partial |
Admin UI | Auto-generated | No | No |
Library granularity | 20 independent libs | Monolithic | Template-based |
Multi-tenancy | Built-in | No | No |
Can you improve this documentation?Edit on GitHub
cljdoc builds & hosts documentation for Clojure/Script libraries
| Ctrl+k | Jump to recent docs |
| ← | Move to previous article |
| → | Move to next article |
| Ctrl+/ | Jump to the search field |