Packages

AUSUS v0.1.0 publishes 10 Composer packages and 1 npm package. This page is the authoritative list of what each one is — and which ones are reserved names with no code yet.

:::warning Implemented vs reserved Four Composer packages in v0.1.0 are name reservations only. They contain a composer.json and a README.md but no source code. They are listed here so the namespace is documented and claimed; they are planned to ship as working code in v0.2.0. Do not depend on them as functional packages. :::

Implemented — Composer

Package	Layer	Role
ausus/kernel	L0	contracts, value objects, DSL, Compiler
ausus/runtime-default	L2	the Invoker chain
ausus/persistence-sql	L3	SQLite persistence driver
ausus/api-http	L4	PSR-7/15 HTTP API

ausus/kernel

Layer L0. Contracts and value objects only — no runtime side effects. Defines the metadata graph node types, the Plugin contract, the Compiler, the DSL (DslPlugin, Dsl, Field, Action), the Policy / Effect / Repository / Auditor contracts, the value objects (Tenant, Reference, Actor, …), Ulid, and the exception taxonomy. Every other package depends on it.

ausus/runtime-default

Layer L2. The execution engine: Invoker, PolicyEngine, WorkflowRuntime, EffectDispatcher and the built-in effects, DefaultAuditor, and ProjectionRenderer. Depends on kernel. See The Runtime.

ausus/persistence-sql

Layer L3. A SQLite-backed PersistenceDriver: SqlitePersistenceDriver, SqliteRepository, SchemaDeriver, and DatabaseAuditSink. Depends on kernel. See SQL Persistence.

ausus/api-http

Layer L4. A PSR-15 Router exposing projections and actions over HTTP, plus ErrorMapper and a minimal Emitter. Depends on kernel and runtime-default. See The HTTP API.

Implemented — template and metapackage

Package	Type	Role
ausus/starter	project	composer create-project template — wires the stack and ships the HelloInvoice sample
ausus/standard-stack	metapackage	pins the validated v0.1.0 package set; depends on kernel, persistence-sql, runtime-default, api-http

Implemented — npm

Package	Role
@ausus/renderer-react	React 18/19 renderer for the ViewSchema wire format

ESM-only; react/react-dom are peer dependencies. See The React renderer.

Reserved — name only, no code in v0.1.0

These four packages are reserved names. They ship in v0.1.0 with metadata but no implementation, and are planned for v0.2.0.

Package	Reserved for	Planned layer
ausus/tenancy-row	a row-level multi-tenancy driver	L3
ausus/audit-database	a dedicated database audit sink/driver	L3
ausus/auth-bridge	the authentication / actor-resolution bridge	L2–L4
ausus/presentation-default	the L5 presentation layer beyond the kernel renderer	L5

:::note What this means for you

• Multi-tenancy in v0.1.0 is the tenant scoping built into persistence-sql — not a separate tenancy-row driver.
• Auditing in v0.1.0 is DatabaseAuditSink in persistence-sql — not the audit-database package.
• Authentication is not provided — auth-bridge is unwritten. See the security note in The HTTP API. :::

Dependency order

When installing packages by hand, follow the dependency order:

kernel
 ├─ runtime-default      (-> kernel)
 ├─ persistence-sql      (-> kernel)
 └─ api-http             (-> kernel, runtime-default)
standard-stack           (-> kernel, persistence-sql, runtime-default, api-http)
starter                  (-> kernel, persistence-sql, runtime-default)

Related

• Installation — how to install them.
• Release Notes v0.1.0 — the compatibility matrix.
• Package Integrity — artifact verification.