Graphein — framework-agnostic, zero-dependency, agent-first data visualization engine.

Graphein React wrapper — declarative <Chart spec={...} /> for the Graphein visualization engine.

Headless Graphein rendering for Node — render any ChartSpec to a PNG buffer with a RenderReport, no browser required.

Model Context Protocol server for Graphein — wraps generate → validate → repair → render → critique into one tool call, and serves Graphein's schema + agent guide as resources so a model that never saw the API can still build correct charts.