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@zweiundeins

zwei und eins gmbh

Simpler software, ready for AI agents.
README.md

zwei und eins gmbh

Simpler software, ready for AI agents. We cut the cost of over-engineered web stacks and make applications usable by AI agents: one process on one server, one SQLite file, HTML over the wire, and an MCP server in front of your API.

A Swiss company in Aarberg, led by Michael Bolli, who has built and looked after web applications for over 20 years.

What we do

  • Architecture audit: one to two weeks of code review, a workshop and written findings on where your cost and complexity come from, and what to cut first.
  • Simplify & migrate: off microservices, serverless or a hyperscaler, step by step, without a big-bang rewrite.
  • Make your app LLM-ready: an MCP server, an OpenAPI spec, a typed SDK and a permission model your security team can sign off.
  • Agentic development: we build with your team using coding agents, and show them how to keep quality under control.

Not our focus: marketing-only websites, and frontend projects without backend or architectural responsibility.

Open source

  • lith: the runtime for our Go, SQLite and Datastar apps. One writer applies every write in order, each changed view renders once per tick for everyone who has it open, and goes out compressed over SSE. zweiundeins.gmbh, starbase and kanban run on it. Docs.
  • starbase: gallery of Datastar web components. Go, templ, SQLite, CQRS on lith: the stack we recommend, end to end.
  • kanban: collaborative Kanban board, one Go binary on lith, SQLite, Datastar. Measured against PLANKA, with every script and all raw data.
  • cashctrl-mcp: MCP server for the Swiss accounting system CashCtrl. 376 endpoints, read-only unless write mode is on, every write previewed.
  • cashctrl-ts-sdk: typed TypeScript client for all 376 endpoints of the CashCtrl API, with an OpenAPI 3.1 spec.
  • payrexx-go-sdk and wallee-go-sdk: Go SDKs for the Swiss payment providers Payrexx and Wallee.

Michael’s own projects include php-via, a real-time engine for PHP; nfsen-ng, a NetFlow visualiser; php-ron, RON for PHP; and the Datastar plugins data-on-keys and data-prop.

How we build

  • Go on the server, on lith; PHP where it is already in place, long-running on OpenSwoole with php-via
  • SQLite, or MySQL where it is already in place
  • HTML over SSE with Datastar, minimal client-side state
  • Every number in our blog posts comes with the source and the raw data

Contact

Popular repositories Loading

  1. starbase starbase Public

    Community Components for Rocket: a gallery of Datastar Rocket web components. Go, templ, SQLite, CQRS.

    Go 37 1

  2. lith lith Public

    lith: Linear writes, Immediate mode, Ticks, Hypermedia. A Go runtime for SQLite and Datastar apps.

    Go 6

  3. kanban kanban Public

    Collaborative Kanban board: one Go binary, SQLite, Datastar. Measured against PLANKA, with every script and all raw data.

    Go 3

  4. cashctrl-mcp cashctrl-mcp Public

    MCP server for the CashCtrl accounting API: 18 read tools over 376 endpoints, plus four write tools behind an explicit write mode. Deno or Node.

    TypeScript 2

  5. .github .github Public

    Organisation profile of zwei und eins gmbh: our services and open-source projects.

  6. tickit tickit Public

    An issue tracker and a wiki that several people use at once, live: the public demo of lith. Go, templ, SQLite, Datastar, event sourcing, ProseMirror co-editing.

    Go

Repositories

Showing 10 of 11 repositories
  • lith Public

    lith: Linear writes, Immediate mode, Ticks, Hypermedia. A Go runtime for SQLite and Datastar apps.

    zweiundeins/lith's past year of commit activity
    Go 6 MIT 0 0 0 Updated Nov 3, 2026
  • starbase Public

    Community Components for Rocket: a gallery of Datastar Rocket web components. Go, templ, SQLite, CQRS.

    zweiundeins/starbase's past year of commit activity
    Go 37 MIT 1 0 2 Updated Nov 3, 2026
  • tickit Public

    An issue tracker and a wiki that several people use at once, live: the public demo of lith. Go, templ, SQLite, Datastar, event sourcing, ProseMirror co-editing.

    zweiundeins/tickit's past year of commit activity
    Go 0 MIT 0 0 7 Updated Oct 29, 2026
  • lith-coedit Public

    Co-editing for lith apps: ProseMirror documents committed through lith's writer, with carets, comments and a shared editor protocol.

    zweiundeins/lith-coedit's past year of commit activity
    Go 0 0 0 0 Updated Oct 25, 2026
  • prosemirror-go Public

    A Go port of ProseMirror's document model and transform, schema-agnostic and standard library only, tested against upstream ProseMirror.

    zweiundeins/prosemirror-go's past year of commit activity
    Go 0 0 0 0 Updated Oct 25, 2026
  • kanban Public

    Collaborative Kanban board: one Go binary, SQLite, Datastar. Measured against PLANKA, with every script and all raw data.

    zweiundeins/kanban's past year of commit activity
    Go 3 MIT 0 0 0 Updated Oct 16, 2026
  • .github Public

    Organisation profile of zwei und eins gmbh: our services and open-source projects.

    zweiundeins/.github's past year of commit activity
    0 0 0 0 Updated Oct 15, 2026
  • cashctrl-ts-sdk Public

    Typed TypeScript client for the CashCtrl accounting API, covering all 376 endpoints. Includes a generated OpenAPI 3.1 spec. Runs on Deno, Node and Bun.

    zweiundeins/cashctrl-ts-sdk's past year of commit activity
    TypeScript 0 MIT 0 0 1 Updated Oct 15, 2026
  • cashctrl-mcp Public

    MCP server for the CashCtrl accounting API: 18 read tools over 376 endpoints, plus four write tools behind an explicit write mode. Deno or Node.

    zweiundeins/cashctrl-mcp's past year of commit activity
    TypeScript 2 MIT 0 0 0 Updated Oct 15, 2026
  • wallee-go-sdk Public

    Go SDK for the Wallee (wallee.com) payment API, generated from Wallee's OpenAPI spec, with JWT/MAC auth.

    zweiundeins/wallee-go-sdk's past year of commit activity
    Go 0 MIT 0 0 0 Updated Oct 15, 2026
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Go TypeScript