Show HN: Pixels.rocks – Collaborative pixel canvas like R/place, always online

2 pointsposted 14 hours ago
by pazant

1 Comments

pazant

14 hours ago

Hey HN! Built this as an experiment with agentic coding workflows.

Stack: React + TypeScript, FastAPI + WebSockets, Celery, Redis, PostgreSQL, k3s.

What made autonomous coding actually work:

  - Monorepo (frontend + backend + deploy configs) — full context in one place
  - Heavy documentation in the repo — architecture patterns, conventions, examples
  - TDD-first — "make this test pass" beats "implement this feature"
  - Micro-tasks — break issues into chunks small enough to complete without losing context
  - Strict tooling — linters, type checking, Playwright for UI testing
  - Tight feedback loop — run all checks, see failures, fix autonomously
Honest take: you become a tech lead with an incredibly fast junior dev. Colossally fast. But still a junior — need to review everything, catch architectural mistakes, guide direction.

Happy to answer questions about the workflow or stack!