ploykit

README

---

ploykit is a full-stack framework for building multi-tenant SaaS products: eleven production-grade business domains, a cross-cutting authorization layer, a strong-profile authorization engine, 18 platform packages, and a React 19 client/UI layer — wired end-to-end in a runnable example app.

Dependencies are strictly one-way: product → framework. Your repository consumes ploykit; ploykit never knows your product. That rule (and every other boundary) is enforced by architecture tests, not by convention.

Why ploykit

• Months of table-stakes work, already built. Auth (password + OAuth + federated SSO), workspaces & membership, billing with Stripe and manual channels, quotas with reservations, notifications, audit trail, analytics, webhooks with retry and key rotation, scheduling, site settings — domain code you would otherwise write before writing your product.
• Security is a gate, not a guideline. Tenant isolation, CSRF, impersonation-safe sessions, egress SSRF protection, secret sealing, CSV-injection-safe exports — invariants pinned by architecture tests that fail the build when a boundary is crossed.
• Production posture out of the box. Prerendered SSR with versioned caching, River-backed transactional events, partitioned audit and analytics tables with retention workers, health and readiness probes, Prometheus metrics, structured logging with secret redaction.
• A real app, not a toy. The example/ product exercises every domain — pages, API, migrations, and tests — and is the reference for how a product consumes the framework.

What's inside

Layer	What you get
Business domains (11)	identity · workspace · billing · quota · admin · notify · audit · analytics · webhooks · schedule · settings
Cross-cutting	authz (simple RBAC) · authorization (strong profile: YAML operation catalog, staged evaluator, allow / deny / challenge) · contractx (deterministic hashing, route and OpenAPI comparison)
Platform packages (18)	renderx (SSR + prerender + QuickJS sandbox) · pg (tenant-scoped pools) · pgmigrate · pgpart · events (River) · webx · wsx (WebSocket rooms) · egressx (SSRF-safe egress) · sealx (secret sealing) · storagex · redactx · logx · metrics · workers · cronx · redisx · relayx · ids
Frontend	@ploykit/ui (Base UI component system, 40+ pages) · @ploykit/client (typed API + CSRF + realtime) · @ploykit/runtime (hydration and prerender bridge)

Screenshots

Workspace billing — plans & manual channel

Extend it in minutes

Every domain exposes hooks. React to anything your product cares about in a few lines — inside your own transaction boundary:

import "github.com/haozing/ploykit/platform/events"

// react to a domain event emitted by the framework
events.Subscribe("task.created", func(ctx context.Context, ev events.Event) error {
    slog.Info("task created", "workspace", ev.WorkspaceID)
    return nil // return an error to fail the emitting transaction
})

That is the whole idea: the framework owns the machinery (tenancy, auth, billing, quotas, events, rendering); your repository owns the product — pages, product migrations (1001+), and the reactions that make it yours. The example/ app is a complete, working demonstration.

Architecture at a glance

graph LR
    subgraph Product["Your product repository"]
        APP["Your application code"]
        WEB["@ploykit/ui · client · runtime"]
    end
    subgraph Framework["ploykit framework"]
        DOMAINS["11 business domains<br/>identity · workspace · billing · quota · …"]
        CORE["authz · authorization · contractx"]
        PLATFORM["18 platform packages<br/>renderx · pg · events · webx · sealx · …"]
    end
    DB[("PostgreSQL")]

    APP --> WEB
    APP --> DOMAINS
    WEB --> DOMAINS
    DOMAINS --> CORE
    DOMAINS --> PLATFORM
    PLATFORM --> DB

Every arrow above is one-directional and enforced: the architecture tests fail the build if a domain imports another domain, if platform/* reaches into business code, or if a product page shadows a framework page.

Quickstart

# 1. database (Docker)
make -C example db-up

# 2. backend (:8030, runs migrations, wires every domain)
make -C example backend

# 3. frontend dev server (:5173, proxies to :8030)
make -C example frontend

Open http://localhost:5173, register with the dev verification code 000000, and the whole stack is yours. Prefer a single production-style binary? make -C example build prerenders the frontend and embeds it into one Go executable.

Full-stack verification:

go test ./...                             # unit gates (architecture boundaries included)
make -C example db-up && make test-db     # integration tests against PostgreSQL
make verify-ui                            # frontend component tests
python tools/check_api.py                 # OpenAPI ↔ route contract check

Documentation

Doc	Contents
docs/architecture.md	Layering, domain map, hook model, boundary enforcement
docs/api-index.md	Every domain extension point (25 hooks) with semantics
docs/platform-api-index.md	The full platform/* API surface
docs/rendering.md	SSR, prerender, hydration, caching, sandboxing
docs/pages.md	Frontend page inventory and ownership rules
docs/dev-environment.md	Toolchain, database, sealing keys, RLS playground
docs/adr/	Architecture decision records
docs/ROADMAP.md	Trigger-based roadmap — what lands next and why not yet

Contributing

Issues and pull requests are welcome — see CONTRIBUTING.md for the full setup and the architecture contract. The short version: the architecture tests are the contract; if your change crosses a boundary on purpose, update the ADR and the allowlist in the same PR. Security issues go through SECURITY.md, never public issues.

License

MIT — see LICENSE.