Build an iReal Pro chord chart from structured measures (or a raw progression). Every measure is padded to a fixed cell width so iReal Pro wraps to exactly measuresPerLine measures per line (default 4). By default the chart is SAVED to the on-disk library and served by the standalone HTTP server (so it's reachable from other devices on the network). Returns a modern irealb:// import link, a legacy irealbook:// link, the served URLs, an ASCII layout preview, and validation warnings.

Render only the ASCII layout grid for a chart (measuresPerLine per row) without building the import links. Fast way to check the 4-bars-per-line layout while iterating on chords.

Parse an existing irealb:// or irealbook:// URL (or HTML containing one) back into its title, composer, style, key, the raw progression, and a best-effort measure list — useful for editing an existing chart.

List the built-in iReal Pro play-along styles, grouped by family (Jazz / Latin / Pop).

List the chord roots, qualities, time signatures, and key signatures iReal Pro understands, so generated charts use valid symbols. Chord = root + quality + optional /bass (e.g. C-7/Bb).

Harmonic analysis to help plan a solo: Roman numerals, chord function, a chord-scale recommendation per chord (with the actual scale notes), detected ii–V(–I) cells, and a short jam plan. Pass slug to analyze a saved chart, or pass key + measures to analyze inline.

List all charts in the on-disk library, with their slugs and served URLs.

Remove a chart from the library by slug (deletes its .json and .html).

Report the library directory, the configured port, and the LAN URLs where the chart server is (or will be) reachable from other devices. Also gives the command to start the server.