---
title: POLYTONE
description: An AI-native programming language with teaching errors, native media formats, and browser tools that run the real language.
url: https://polytone.lan-solo.com/
---

# POLYTONE

> POLYTONE is an AI-native programming language: one canonical form for
> every construct, compiler errors that teach the correct spelling,
> tests built into the language, five native media formats designed new
> for LLMs, and browser tools that run real POLYTONE.

The site is a client-rendered app; the hash routes below render from
the same content this file summarizes. Full detail: llms-full.txt.

## Core

- [Site](https://polytone.lan-solo.com/): guide, playground, tools
- [Guide](https://polytone.lan-solo.com/guide/getting-started/): install and first program
- [Playground](https://polytone.lan-solo.com/playground/) · [Error Lab](https://polytone.lan-solo.com/errors/) · [Prelude](https://polytone.lan-solo.com/prelude/) · [API reference](https://polytone.lan-solo.com/api/)
- [Download the toolchain](https://polytone.lan-solo.com/download/): native ptc + polytone-lsp for Windows/macOS/Linux
- [Roadmap](https://polytone.lan-solo.com/roadmap/) · [Changelog](https://polytone.lan-solo.com/changelog/)
- [Language specification](https://github.com/LAN-SOLO/POLYTONE/blob/develop/spec/polytone-spec-v1.0.md): the single source of truth, sections 1-27
- [Source repository](https://github.com/LAN-SOLO/POLYTONE): compiler (Rust), stdlib (POLYTONE), tools (TypeScript)
- [Changelog](https://github.com/LAN-SOLO/POLYTONE/blob/develop/CHANGELOG.md): versions read MAJOR.PHASE.SPRINT (1.6.48 era: 1.0.0)
- [Roadmap](https://github.com/LAN-SOLO/POLYTONE/blob/develop/ROADMAP.md)

## Formats (all text, designed for LLMs)

- [Format laws](https://github.com/LAN-SOLO/POLYTONE/blob/develop/formats/00-OVERVIEW.md): text never binary, intent over samples, one canonical form, teaching decoders, written in POLYTONE
- [.pti image](https://github.com/LAN-SOLO/POLYTONE/blob/develop/formats/pti-image.md) · [.pta audio](https://github.com/LAN-SOLO/POLYTONE/blob/develop/formats/pta-audio.md) · [.ptm 3D](https://github.com/LAN-SOLO/POLYTONE/blob/develop/formats/ptm-model.md) · [.ptw web](https://github.com/LAN-SOLO/POLYTONE/blob/develop/formats/ptw-web.md) · [.ptv video](https://github.com/LAN-SOLO/POLYTONE/blob/develop/formats/ptv-video.md)

## Packages

- [Registry index](https://polytone.lan-solo.com/registry/index.ptr): fetch with `ptc vendor https://polytone.lan-solo.com/registry <name>`
- [Manifest format](https://github.com/LAN-SOLO/POLYTONE/blob/develop/formats/pkg-manifest.md)