--- title: "Packages — @zudojs/*" description: "Browse all 39 @zudojs packages by category: foundation, runtime, application, transport, security and platform. Search by name and pick a version." source: https://zudojs.oyinlola.site/docs/packages --- ## Architecture Tiers Dependencies flow inward: a package may depend only on packages of the same or a lower tier. Tier 0 means it depends on no other Zudo package. The tiers below are the ones defined in `scripts/package-tiers.js`, the single source of truth the architecture tests enforce — a category spanning a range simply groups packages that sit at different tiers. Tier 0–1 Foundation Tier 1 Runtime Primitives Tier 2 Application Tier 3 Transport Tier 1–2 Security Tier 1–4 Platform / DX ## Foundation 11 packages The building blocks everything else rests on. `@zudojs/errors` and `@zudojs/types` are tier 0 — they depend on no other Zudo package. The other nine sit at tier 1, depending only on those two. [@zudojs/errors v1.3.0 Shared error base class, error codes, and error handling utilities for the Zudo framework. No dependencies](https://zudojs.oyinlola.site/docs/packages-errors.md) [@zudojs/types v1.2.0 Shared type guards, utility types, and type converters for the Zudo framework. No dependencies](https://zudojs.oyinlola.site/docs/packages-types.md) [@zudojs/constants v1.1.2 Shared constants, enums, and type-safe literals for the Zudo framework. depends on: errors](https://zudojs.oyinlola.site/docs/packages-constants.md) [@zudojs/container v1.2.0 Token-based dependency injection container for managing application dependencies and service lifetimes. depends on: errors](https://zudojs.oyinlola.site/docs/packages-container.md) [@zudojs/logger v1.4.0 Structured logging with transports, log levels, and context propagation for Zudo applications. depends on: errors](https://zudojs.oyinlola.site/docs/packages-logger.md) [@zudojs/crypto v1.3.1 Cryptographic primitives for hashing, encryption, tokens, and secure random generation. depends on: constants, errors](https://zudojs.oyinlola.site/docs/packages-crypto.md) [@zudojs/validation v1.1.0 Schema validation with Zod integration, constraints, parsers, composers, and depth/size checks. depends on: errors, constants, types](https://zudojs.oyinlola.site/docs/packages-validation.md) [@zudojs/schema v1.2.0 Type-safe schema definition, parsing, and validation engine for data contracts. depends on: errors, constants, types](https://zudojs.oyinlola.site/docs/packages-schema.md) [@zudojs/config v1.3.0 Layered configuration management with multiple sources, validation, and environment-specific overrides. depends on: errors, constants](https://zudojs.oyinlola.site/docs/packages-config.md) [@zudojs/middleware v1.1.0 Composable middleware pipeline with composition, timing, error handling, and context propagation. depends on: errors](https://zudojs.oyinlola.site/docs/packages-middleware.md) [@zudojs/serialization v1.2.0 Data translation layer with JSON serializer, type transformers, envelopes, and registry. depends on: constants, errors, types, validation](https://zudojs.oyinlola.site/docs/packages-serialization.md) ## Runtime Primitives 11 packages Infrastructure for events, messaging, lifecycle, storage, and background processing. [@zudojs/events v1.3.0 Event-driven architecture with event bus, emitter, middleware, and registry for decoupled communication. depends on: errors, constants, middleware](https://zudojs.oyinlola.site/docs/packages-events.md) [@zudojs/messaging v1.2.0 In-process message bus infrastructure with handlers, middleware, and publish/subscribe patterns. depends on: errors, constants, middleware](https://zudojs.oyinlola.site/docs/packages-messaging.md) [@zudojs/lifecycle v1.2.1 Application and component lifecycle orchestration with state machine, dependency ordering, graceful shutdown. depends on: errors, constants](https://zudojs.oyinlola.site/docs/packages-lifecycle.md) [@zudojs/transactions v1.2.0 Transaction lifecycle and coordination with state machine, AsyncLocalStorage, savepoints, and hooks. depends on: errors](https://zudojs.oyinlola.site/docs/packages-transactions.md) [@zudojs/cache v1.2.0 Caching primitives, abstractions, and adapters for the Zudo framework. depends on: errors, constants, types, serialization](https://zudojs.oyinlola.site/docs/packages-cache.md) [@zudojs/storage v1.2.0 Storage abstractions including database, object storage, repository, serialization, locking, and lifecycle. depends on: errors, constants, types, serialization](https://zudojs.oyinlola.site/docs/packages-storage.md) [@zudojs/queue v1.4.0 Background job and asynchronous task infrastructure with in-memory and adapter-based queue implementations. depends on: errors, constants, serialization](https://zudojs.oyinlola.site/docs/packages-queue.md) [@zudojs/scheduler v1.2.0 Scheduled task and job infrastructure with cron-like scheduling, persistence, and worker management. depends on: errors, constants, types](https://zudojs.oyinlola.site/docs/packages-scheduler.md) [@zudojs/adapters v1.2.1 Boundary layer between Zudo and external platforms with adapter contracts, registry, and transport abstractions. depends on: errors](https://zudojs.oyinlola.site/docs/packages-adapters.md) [@zudojs/database v1.3.0 Database abstraction layer with clients, repositories, transactions, and query building. depends on: errors, types, logger](https://zudojs.oyinlola.site/docs/packages-database.md) [@zudojs/observability v1.2.0 Structured logging, metrics, tracing, context propagation, and exporters for Zudo applications. depends on: errors, logger](https://zudojs.oyinlola.site/docs/packages-observability.md) ## Application Architecture 7 packages High-level application patterns: CQRS, runtime, API operations, auth, RPC, and OpenAPI. [@zudojs/core v1.2.2 Application lifecycle management, execution context propagation, and runtime orchestration. depends on: errors, constants](https://zudojs.oyinlola.site/docs/packages-core.md) [@zudojs/cqrs v1.2.0 CQRS primitives for separating read and write operations. depends on: errors, events, middleware](https://zudojs.oyinlola.site/docs/packages-cqrs.md) [@zudojs/auth v1.3.0 Authentication and authorization services — JWT tokens, sessions, RBAC, and password hashing. depends on: errors, constants, types, crypto, permissions](https://zudojs.oyinlola.site/docs/packages-auth.md) [@zudojs/auth-oauth v1.2.2 Sign in with Google, GitHub, Microsoft, Apple or Discord — authorization URLs, PKCE, state checks, and code exchange. depends on: errors, security](https://zudojs.oyinlola.site/docs/packages-auth-oauth.md) [@zudojs/runtime v1.3.0 Application lifecycle orchestrator with dependency ordering, rollback, signals, and readiness checks. depends on: errors, constants, container, core, events, logger](https://zudojs.oyinlola.site/docs/packages-runtime.md) [@zudojs/api v1.2.0 Application-facing API layer — operation definitions, execution context, interceptors, and result types. depends on: errors, types, openapi, queue, rpc, schema, security, serialization](https://zudojs.oyinlola.site/docs/packages-api.md) [@zudojs/rpc v1.4.0 Remote procedure call infrastructure for Zudo applications. depends on: errors, constants, types, schema, security, serialization](https://zudojs.oyinlola.site/docs/packages-rpc.md) [@zudojs/openapi v1.5.0 OpenAPI 3.1 specification generation, validation, and SDK generation for Zudo applications. depends on: errors, constants](https://zudojs.oyinlola.site/docs/packages-openapi.md) ## Transport 2 packages External interfaces — HTTP server and CLI tooling. [@zudojs/http v1.4.0 HTTP primitives, request handling, routing, middleware, and server infrastructure. depends on: errors, crypto, logger, middleware, openapi, security](https://zudojs.oyinlola.site/docs/packages-http.md) [zudojs-cli v2.1.0 Command-line interface for scaffolding, generating, and managing Zudo framework projects. depends on: config, core, errors, logger](https://zudojs.oyinlola.site/docs/packages-cli.md) ## Security 4 packages Authentication, authorization, input validation, and cryptographic security. [@zudojs/security v1.3.0 Security primitives for input validation, header security, CORS, CSRF, rate limiting, and security headers. depends on: errors, constants](https://zudojs.oyinlola.site/docs/packages-security.md) [@zudojs/permissions v1.4.0 Generic authorization engine with RBAC, ABAC, resource authorization, wildcards, role hierarchy, and policies. depends on: errors, middleware](https://zudojs.oyinlola.site/docs/packages-permissions.md) [@zudojs/crypto Foundation Cryptographic primitives for hashing, encryption, tokens. Listed in Foundation above.](https://zudojs.oyinlola.site/docs/packages-crypto.md) [@zudojs/auth Application Authentication and authorization. Listed in Application above.](https://zudojs.oyinlola.site/docs/packages-auth.md) [@zudojs/auth-oauth Application OAuth 2.0 sign-in. Listed in Application above.](https://zudojs.oyinlola.site/docs/packages-auth-oauth.md) ## Platform & DX 4 packages Multi-tenancy, feature flags, plugins, documentation infrastructure, and testing utilities. [@zudojs/tenancy v1.3.0 Multi-tenant context and isolation with tenant resolution, AsyncLocalStorage propagation, and guard middleware. depends on: errors, constants, middleware](https://zudojs.oyinlola.site/docs/packages-tenancy.md) [@zudojs/feature-flags v1.4.0 Feature flag system with deterministic rollouts, rule engine, providers, variants, and evaluation context. depends on: errors, types](https://zudojs.oyinlola.site/docs/packages-feature-flags.md) [@zudojs/plugins v1.3.0 Plugin system for extending Zudo applications with modular capabilities. depends on: errors](https://zudojs.oyinlola.site/docs/packages-plugins.md) [@zudojs/docs v1.0.4 Documentation infrastructure with structured document model, registry, validation, navigation, and generation. depends on: errors](https://zudojs.oyinlola.site/docs/packages-docs.md) [@zudojs/testing v1.2.0 Test helpers, fixtures, mocks, and utilities for testing Zudo applications. depends on: 14 packages](https://zudojs.oyinlola.site/docs/packages-testing.md) 0 No packages match your filter.