kumiko.rocks beta
Technical build partner · Internal & operational software · EU-hosted, your code

You have the idea.
We build it — and you own it.

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.

$ npm install @cosmicdrift/kumiko-framework

Proof: cashcolt.kumiko.rocks and publicstatus.eu — both built end-to-end on Kumiko.

Why this is credible

Clear product scope, clear fit, clear next step.

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

Product and showcase already run in production.

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

A concrete starting point, not endless discovery.

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

Germany-hosted, on-prem, or fully inside your network.

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

Your repo and deploy path remain portable.

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.

Good fit

  • Mid-market or product teams replacing spreadsheet, email, and internal-tool sprawl with one controlled operating platform.
  • Organizations that care about hosting control, auditability, role models, or tenant separation from day one.
  • Use cases that should become tangible in weeks via a pilot instead of a long custom-software program.

Probably not a fit

  • Consumer apps or products optimized mainly for growth loops, app-store UX, or high-volume public traffic.
  • Extreme realtime, edge, or hyperscale infrastructure problems as the central requirement.
  • Teams looking only for a generic no-code tool without technical ownership or deployment control.

Industry use cases

Same platform, your industry.

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.

kumiko.rocks · this site, built on Kumiko
publicstatus.eu · multi-tenant production traffic
cashcolt.kumiko.rocks · multi-tenant credit planner
@marc on X · Build-stream weekly

Updates

What we're building — and what we're learning

All updates →

No black box

Real code, real stack.

Plain TypeScript on a battle-tested runtime. Read it, extend it, take it with you. No vendor lock-in — your repo, your audit trail.

Bun runtime
Hono HTTP layer
Postgres + Drizzle event store + read model
Redis SSE pub/sub for realtime
Zod / jose / Vitest validation, JWT, tests

No Kafka. No EventStoreDB. No NATS. Postgres is everything.

features/incidents.ts
// 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

Today vs late 2026.

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

Framework via NPM

@cosmicdrift/kumiko-framework, bundled-features, dev-server. Source-available for enterprise.

CLI dev workflow

bun kumiko dev / test / build / migrate. Hot-reload, ephemeral test DB, prod build.

Self-host + on-prem + local LLM

Docker on Hetzner / Kubernetes / your laptop. Ollama + vLLM via OpenAI-compat for air-gapped setups.

Production showcase

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

Designer · H2 2026

Visual editor for your feature files — entities, screens, nav, roles. Writes real code in your repo, custom code survives every patch.

AI-builder web UI · H2 2026

Prompt → typed feature-patches → diff in your repo. claude.ai-style chat. BYOK or hosted Anthropic. Pilot users get early access.

MCP server · H2 2026

Model Context Protocol — drive Kumiko from Claude Desktop, Cursor, or your own agent setup.

Managed cloud · 2027

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

Your data,
your jurisdiction.

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

Your DC, your domain.

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

AI stays in-house.

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

Tenant isolation in the pipeline.

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

Event-sourcing as default.

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.

Showcases · built with Kumiko

Real products, in production

A multi-tenant credit planner and a status-page SaaS — both built end-to-end on Kumiko. Auth, multi-tenant, audit, tiers, GDPR, all from defineFeature. Live at cashcolt.kumiko.rocks and publicstatus.eu.

Live showcases

Real products in production

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.

CashColt portfolio dashboard
CashColt — remaining debt, monthly payment and payoff chart
CashColt credit calculator
CashColt — live amortization table, chart and extra payments
PublicStatus tenant status page
PublicStatus — public status page with an active incident
PublicStatus uptime monitor
PublicStatus — uptime dashboard with availability and latency

Have an idea? Let's build it.

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).