cyberware.sh

Sureffi
- aboutSoftware developer, Finland. .NET, Go, Rust. Products that run, and the tools coding agents work with. Available for work.
- sureffi@proton.meIt gets read.
- github.com/SureffiThe public repos.
- x.com/SureffiThe feed.
- writingOn context economics in agentic sessions: how to write an instruction file.
Products
- laskuduunariInvoicing for Finnish tradespeople, on the phone. Live at laskuduunari.fi, first pilot onboarding.
- tehdasThe website factory. A Finnish company's site, read and rebuilt by an agent, offered by letter and email, paid, hosted.
- kauppaThe shop where tehdas's buyer lands: preview and price behind a pin, payment over Paytrail, the bought site kept live.
- lumioLumio Software Oy. The company's site and identity, lumiosoftware.fi.
Wares
- drawerA dot fence in a Claude Code reply becomes a drawing, in place, as it streams. Go. Open source.
- kouraHands for coding agents on desktop apps: an Avalonia app on a virtual display, driven by its live control tree.
- penkkiA bench for instruction files: runs every case through the real model in its own container and leaves the receipt.
- listenSpotify inside Claude Code. Rust.
.NET
- AgentSDK.NETThe Claude Agent SDK for .NET. Drives the claude binary over stream-json. No API key.
- Tutka.NETOSINT for Finnish companies: registers, directories and the company's own site folded into one digest, every fact with its source.
- Lukija.NETA page reader for Finnish companies: any page as a browser shows it, as markdown with the contacts read out. Sandboxed Playwright.
- Clients.NETHTTP API clients as NuGet packages, one per API: PRH, Statistics Finland, Rala, Tukes, Google Places, whois, DNS, Paytrail.
- Sensor.NETA sensor engine: one base class per sensor kind, a repo's sensors derive it and the checks come with the base.
- Ikkuna.NETThe window: shell, rail, bar and places every desktop app in the house stands on. Avalonia 12.
- runkoThe .NET base: what a repo has, the templates every repo is cut from, the matrix that proves the cut.
Earlier
- CienceTerminalReal-time crypto attention terminal. .NET 8 microservices on AWS, LLM tweet classification, Solana on-chain checks, React 19. Ran in production 2025. Open source.

cyberware · augmenting agents with cyberware