Typical workflow today:
Analyst builds Excel model Developer rewrites formulas in Python / JS Application table
That rewrite step is painful and error-prone and endless.
fin123 takes a different approach: the worksheet itself is the artifact:
Worksheet spec... Compiled worksheet (deterministic artifact)... Application embeds the viewer
Design goals:
- deterministic builds - offline computation - finance-safe joins and lookups - Polars-backed table evaluation - explicit lifecycle: commit, build, verify, release
The core engine is open source (Apache-2.0) and runs fully locally.
Happy to answer questions.