SigilYX

YXDB reader and writer for Rust, with Python bindings.

YXDB is the native binary format used by Alteryx Designer. SigilYX is a standalone, cross-platform library that reads and writes .yxdb files. The core is written in Rust; Python bindings are built on top with PyO3 and integrate with Polars, PyArrow, and Pandas.

Format scope: Full read/write support for the E1 (original engine) YXDB layout. Experimental read support for E2 (AMP engine) is included: 13 field types have been verified against real E2 files; 4 rarer types (Blob, SpatialObj, Time, WString) have speculative decoders behind an opt-in flag. E2 writing is not yet supported. See SPECIFICATION-E1.md and SPECIFICATION-E2.md.

Packages

Package	Install	Docs
Python (sigilyx)	pip install sigilyx	PyPI - API docs
Rust (sigilyx)	sigilyx = "0.2" in Cargo.toml	crates.io - docs.rs

What's in the box

• E1 + E2 format support - read both original (E1) and AMP-engine (E2) layouts; full E1 write support.
• All 17 E1 field types - including FixedDecimal, WString, Blob, and SpatialObj.
• Multiple output formats - Polars, PyArrow, or Pandas from the same call.
• Streaming - batched reads with constant memory, and Polars LazyFrame scans with projection and row-limit pushdown.
• Spatial - SpatialObj columns decoded to ISO WKB (compatible with Shapely, PostGIS, GDAL).
• Cross-platform - Linux, macOS, and Windows wheels for x64 and ARM; no native Alteryx install required.

Quick look

Python	Rust
import polars as pl import sigilyx # registers pl.read_yxdb() etc. df = pl.read_yxdb("data.yxdb") df.yxdb.write("output.yxdb")	use sigilyx::{read_yxdb, write_yxdb, SpatialMode}; let df = read_yxdb("data.yxdb", SpatialMode::Wkb)?; write_yxdb("output.yxdb", &df, &[])?;

Project layout

sigilyx/
  sigilyx/            # Rust core library (published to crates.io)
  sigilyx-python/     # PyO3 + pyo3-polars bindings
  python/sigilyx/     # Python wrapper (__init__.py - Polars/PyArrow/Pandas API)
  tests/              # Python test suite
  docs/               # Docusaurus site (sigilweaver.app/sigilyx/)
  SPECIFICATION-E1.md # YXDB E1 format spec
  SPECIFICATION-E2.md # YXDB E2 format spec (experimental)

Building from source

Requires Rust (>= 1.75) and Python 3.9+.

git clone https://github.com/Sigilweaver/SigilYX.git
cd SigilYX
python -m venv .venv
.venv\Scripts\activate         # Windows
# source .venv/bin/activate    # macOS / Linux
pip install maturin polars pyarrow pandas
maturin develop --release

Running tests

# Rust tests
cargo test --workspace

# Python tests
pytest tests/ -v

License

Apache License 2.0.

The format specification was reconstructed from the published Alteryx engine SDK headers and from existing open-source implementations; the implementation itself is original. See THIRD_PARTY_LICENSES.md for attribution of vendored components.