I'm building a Postgres-native workflow engine using pgmq for queues and TypeScript worker. Workflows compile to definitions (SQL rows), letting Postgres orchestrate the DAG as state machines. The TypeScript DSL is type-safe with inferred inputs/outputs across dependencies with full autocomplete.

Declarative and functional in nature. Just a manifest wiring functions into a DAG and a Postgres SQL functions that manage the graph of state machines. Simple in principle and very opinionated.

Replaces 240 lines of manual pg_cron -> pgmq -> Supabase Edge Function boilerplate with 20 lines of explicit DAG definitions. Currently Supabase-only (leverages their primitives) but planning to make it agnostic for vanilla Postgres setups.

Live demo / explanation here: https://demo.pgflow.dev