This Is How I Built an Open-Source Runtime Without Writing A Single Line of Code

Mycel is an open-source Go runtime that replaces microservice boilerplate with declarative config files. Instead of writing routers, handlers, validation, and database logic repeatedly, you declare connectors (HTTP, SQLite, Postgres, Kafka, etc.) and flows that wire them together. Validation, transforms, and retries all live in config — no application code required. WASM plugins handle genuinely custom logic when needed.