Bring an idea for internal or operational software. We build it with you in weeks on Kumiko — event-sourced, multi-tenant, audit built in, hosted in Germany or on your own infra. Real code in your repo, no lock-in. Partnership, equity, or a fixed pilot — whatever fits.
Proof: cashcolt.kumiko.rocks and publicstatus.eu — both built end-to-end on Kumiko.
New here? Build your first real app → the Show Pony tutorial
Why this is credible
Kumiko is not a vague everything-platform. It is an AI-native platform for internal business software, with a live production showcase, a clear hosting posture, and a pilot path that buyers can understand.
Live today
cashcolt.kumiko.rocks and publicstatus.eu run end-to-end on Kumiko, and this site does too. Self-hosting, multi-tenant isolation, audit trail, and local LLM support exist now — not only on the roadmap.
See the live showcases →Pilot format
We review the use case, stand up an initial setup, and guide the pilot so business and IT can quickly decide whether Kumiko fits the process and operating model.
Read the FAQ →Hosting posture
Hetzner in Germany, your own Kubernetes cluster, or air-gapped deployment: Kumiko is for teams that need control over hosting, data flow, and model choice.
See pricing + operating model →Lock-in posture
No per-user lock-in and no proprietary data silo. Generated code stays in your own repo, and enterprise customers can get source access to the framework.
Compare with Retool →Is Kumiko a fit?
We would rather be explicit early than sound universally applicable. That makes the product easier to trust.
Industry use cases
The product definition stays the same across use cases: Kumiko is the AI-native platform for internal business software, adapted to each process and operating environment.
Tier-2/Tier-3 suppliers, IATF 16949. 8D workflow, supplier portal, audit-trail for OEM audits. Setup sprint or self-host.
Mid-market plants, ISO 9001. Maintenance work orders by QR, equipment file, spare-parts inventory linked, AI predictive hints.
Multi-tenant status-page platform. Subdomains, realtime, custom branding. Live system: publicstatus.eu. Self-host or managed.
Tenant portal, maintenance tickets, GDPR-compliant tenant data. Pilot in preparation with legal review.
Updates
TOTP-based 2FA for every Kumiko app — QR enrollment, recovery codes, and a login-time challenge that revokes other sessions on change. Bundled feature, no custom code.
Show Pony is a complete open-source RSVP app with a step-by-step tutorial. Read the source, follow the chapters and ship a real multi-tenant SaaS on Kumiko.
The CashColt showcase page now uses Playwright screenshots from the live app — dashboard, calculator, property folders. No demo mockups.
No black box
Bun, Hono, Postgres, Zod: standard, proven parts. Kumiko is the glue that makes them multi-tenant and event-sourced. Not a proprietary framework versus a standard stack. It is the standard stack, already wired together. Read it, take it with you, no lock-in.
No Kafka. No EventStoreDB. No NATS. Postgres is everything.
// One file, full backend feature. import { defineFeature } from "@kumiko/engine" export default defineFeature("incidents", (r) => { r.entity({ name: "incident", fields: { title, severity, status, assignee }, }) r.writeHandler("createIncident", …) r.projection("open-incidents", …) r.hook("postSave", notifyOncall) })
What you get
Build in public instead of hand-wavy promises: what is marked live is available today for self-hosting or pilot delivery. The rest stays clearly labeled as roadmap.
Live today
@cosmicdrift/kumiko-framework, bundled-features, dev-server. Source-available for enterprise.
bun kumiko dev / test / build / migrate. Hot-reload, ephemeral test DB, prod build.
Docker on Hetzner / Kubernetes / your laptop. Ollama + vLLM via OpenAI-compat for air-gapped setups.
cashcolt.kumiko.rocks — multi-tenant credit planner with property folders and building-savings. publicstatus.eu — status pages with uptime monitoring. Both end-to-end on Kumiko.
Roadmap
Visual editor for your feature files — entities, screens, nav, roles. Writes real code in your repo, custom code survives every patch.
Prompt → typed feature-patches → diff in your repo. claude.ai-style chat. BYOK or hosted Anthropic. Pilot users get early access.
Model Context Protocol — drive Kumiko from Claude Desktop, Cursor, or your own agent setup.
kumiko.rocks hosting for your Kumiko apps. Germany-hosted, BYOK, Free / Pro (~€49–149/month per app) / Enterprise (mid 4–5 figures p.a.). Pricing finalized Q3 2026 with the first pilot customers.
Built sovereign, run anywhere
Self-host on any cloud (Hetzner, OVH, AWS, GCP, your own DC) or air-gapped. Bring your own LLM via Ollama or vLLM. No surprise sub-processors. GDPR, SOC2, HIPAA — pick what applies; the framework supports compliance instead of locking you out of it.
Self-host or on-prem
Docker image, Postgres + Redis. Deploy to any cloud (Hetzner, OVH, AWS, GCP), Kubernetes, or air-gapped. Customer data, prompts, AI-generated code never leave your network.
Local LLM via OpenAI-compat
Ollama, vLLM, llama.cpp — all addressable via the OpenAI-compatible API. Your prompts and data never leave your network. Switch providers via env-var, no code change.
Multi-tenant by default
One instance, many tenants. Data separation, permissions, audit per tenant — built-in, not DIY. The #1 bug class in B2B SaaS, solved at the framework level.
Audit-trail by design
Every change to every entity is an event. Who changed what, when — plus time-travel (asOf) — in one query. ISO 27001-ready, GDPR access requests trivial.
Live showcases
Four screenshots from our two showcase apps — a multi-tenant credit planner and a status-page SaaS, both built end-to-end on Kumiko and live at cashcolt.kumiko.rocks and publicstatus.eu.
Pilot program open to indie founders and mid-market teams in any region. Source access on request, direct line to the maintainer, joint setup sprint instead of a sales funnel. — German mid-market with industry-specific needs? See [/de](/de/) for managed-service sales pages (manufacturing, maintenance, more).