# WestCoast Charts documentation

> WestCoast Charts 1.1.5, release, public Core release, on npm. HTML: https://westcoast-charts.com/docs/ · Index for agents: https://westcoast-charts.com/llms.txt

## Guides

- [Getting started](https://westcoast-charts.com/docs/getting-started/index.md): Install the public MIT Core, use a pinned browser CDN or offline archive. ES modules, CommonJS, React, Vue, Svelte, Angular, SSR, TypeScript and CSP.
- [Premium and licensing](https://westcoast-charts.com/docs/premium/index.md): Premium chart families and separate type modules, licence keys, domain binding, watermark and dev hosts.
- [Radial column charts](https://westcoast-charts.com/docs/radial-column/index.md): radialColumn: layers, links, keys, markers, encodings, goals, gauge, chord, readable labels, API.
- [Quint timeline and convergence](https://westcoast-charts.com/docs/quint/index.md): Shared-time-axis lanes for operations data, crossfilter, incidents and deployment markers. The labelled convergence lens expands time around an incident without changing values; loading, interaction, describe() and export.
- [Vitals Clock and Practice Schedule](https://westcoast-charts.com/docs/medical/index.md): Two separate Premium type modules: vital-sign time slots, practice resources and controlled schedule changes. Explicit imports, caller-defined bands and alarms, missing measurements, schedule helpers and redaction. Examples use invented demo data.
- [Orient: align a radial view](https://westcoast-charts.com/docs/features/orient/index.md): Optional MIT feature for radial views: align a segment or time window, keep text upright, restore the view and respect reduced motion. Supported types, API, controls, events and persistence; the plain Core entry stays lean.
- [Performance and security](https://westcoast-charts.com/docs/performance-and-security/index.md): Large-data settings, measured numbers, bundle sizes, XSS, CSP, CSV, dependencies.

## Reference

- [Accessibility](https://westcoast-charts.com/docs/accessibility/index.md): Keyboard navigation, announcements, data tables, colour-vision palettes and reduced motion. Pinned library reference with source provenance.
- [Theming and design tokens](https://westcoast-charts.com/docs/theming/index.md): Built-in presets, light and dark modes, CSS tokens, precedence and registered themes. Pinned library reference with source provenance.
- [Options reference](https://westcoast-charts.com/docs/reference/options/index.md): Every option with type, default and description, generated from the shipped type declarations.
- [Premium options reference](https://westcoast-charts.com/docs/reference/premium-options/index.md): Options of the premium chart types (plotOptions.sankey, .gantt, .radialColumn, ...).
- [Premium and feature events](https://westcoast-charts.com/docs/reference/premium-events/index.md): Generated callback signatures, payloads and cancellation rules; existing family signatures and optional standard event arguments.
- [Map coverage and small states](https://westcoast-charts.com/docs/maps-coverage/index.md): Default world coverage, explicit data gaps and the optional eight-state Natural Earth boundary supplement, with source provenance.
- [Methods reference](https://westcoast-charts.com/docs/reference/methods/index.md): Chart instance and static methods with signatures.
- [Error catalog](https://westcoast-charts.com/docs/errors/index.md): Validator issue kinds, cause, path, suggestions, machine-applicable fixes and CLI exit codes. Check the resolved library and schema version.

## Agent tools

- [wcc command line](https://westcoast-charts.com/docs/cli/index.md): Install wcc, validate options, render SVG/PNG and inspect the drawn values. Runtime discovery, module support, keys and structured failures.
- [MCP server](https://westcoast-charts.com/docs/mcp/index.md): Install wcc-mcp: seven tools, version discovery, resources and prompts over stdio or Streamable HTTP. Current runtime and module support are documented explicitly.

## Compatibility

- [Migrating from ApexCharts 4.x](https://westcoast-charts.com/docs/migration-from-apexcharts/index.md): Switching an existing app: what is identical, what is new, what behaves differently.

## Release recipes

- [Selective loading and measured sizes](https://westcoast-charts.com/docs/loading/index.md)
- [Heatmap order and Gauge options](https://westcoast-charts.com/docs/chart-conventions/index.md)
- [Maintenance and security](https://westcoast-charts.com/maintenance/index.md)

## For agents

- [Using WestCoast Charts from an AI coding agent](https://westcoast-charts.com/agents/index.md): AGENTS.md, Markdown endpoints, CLI and MCP documentation
- [Every Markdown page](https://westcoast-charts.com/docs/sitemap.md)