Resources
Things to take.
No sign-up, no email address, no paid continuation. If a resource is worth anything, it should be useful to someone who never gets in touch.
Open tooling
Repositories are published under the practice's GitHub account. Some were built for specific projects, others because there was nothing suitable to use.
Enterprise architecture toolchain
A define → document → govern → maintain cycle with the model in git. A purpose-built DSL, a compiler to ArchiMate 3.2 Open Exchange validated against the Open Group XSD, an architecture description in the shape of ISO/IEC/IEEE 42010, standards with a lifecycle, dispensations with expiry dates, and a validator that returns an exit code in the pipeline.
Identity server extensions
SPI for Keycloak 26: an authenticator and credential provider for sign-in by cryptographic signature (EIP-191) with replay protection, OTP as a second factor, passkeys, custom screen templates and deployment documentation.
@archxs/keycloak-wagmi
An MIT-licensed npm package: a wagmi connector for IdP-managed EVM wallets, implementing EIP-1193 and supporting smart accounts (ERC-4337).
Accounting assistant for sole traders
A self-hosted alternative to accounting SaaS: Polish e-invoicing under the FA(3) schema, JPK filings, social-security and income-tax returns, a deadline calendar, expense-document OCR and a chat-driven agent. MIT licence, around 180 tests.
Language-model evaluation arena
A public tool for comparing models on multi-turn tasks: one Elo ladder for models and humans, server-side validation of every ranked game, per-move cost and latency telemetry, a hallucination ranking. The user's API key never leaves the browser.
Writing
Most of the practical material is in the essays, checklists and question sets are part of them, not a separate download.