Show HN: Kodaii generated a 20K-line FastAPI back end from one prompt
github.comWe’ve been working on the Kodaii engine, aimed at generating complete backends that stay coherent across models, routes, workflows, and tests — not just isolated snippets.
To get a sense of how well the engine handles a real project, we asked it to build a Calendly-style booking system from a single prompt. It ran the whole process — planning, code generation, tests, infra, and deployment — in about 8 hours.
What it generated: - ~20K lines of Python (FastAPI, async)
- Postgres schema (6 tables)
- Services, background tasks, booking logic
- Email notifications
- 40 unit tests + 22 integration tests
- Docker Compose (API + Postgres)
- GitHub Actions pipeline
- A running deployment tied to Postgres
- Code & live endpoints
Everything is open: Repo: https://github.com/OlivierKodaii/calendarKodaii
API docs: https://calendar.kodaii.dev/docs
OpenAPI schema: https://calendar.kodaii.dev/openapi.json
Admin interface: https://calendar.kodaii.dev/admin
Why we’re sharing this
We think this line of work may be of interest to peers on HN who care about backend architecture, tooling, and large-scale code generation and your feedback would be very much appreciate.
If you inspect the repo, we’d appreciate any comments on:
- structure,
- code clarity,
- decisions that look odd,
- failure points,
- or anything that feels promising or problematic.
For those who want to follow the project or join the upcoming alpha: https://kodaii.dev
Happy to discuss details or answer questions.
Kodaii can really speed up small to medium projects, MVPs, or prototypes by quickly handling all the “plumbing” (infrastructure, tests, configuration), leaving more time to focus on core business logic. It’s promising !