observablehq/runtime

Health v2 · maintenance only

Adoption not part of the score

1086 stars · 84 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

The Observable Runtime is a JavaScript library implementing reactive dataflow computation, powering Observable Notebooks. It lets you define variables with dependencies that automatically recompute when their inputs change, in the browser or Node.

Use cases

• build reactive dataflow applications in javascript
• embed interactive observable notebook cells in my website
• run observable notebook code outside the platform
• create variables that automatically recompute when dependencies change
• build custom notebook-like reactive environments
• render live data visualizations that update reactively

When to choose

• you want Observable Notebook-style reactive semantics in your own app or embed
• you need fine-grained dependency-driven recomputation of JavaScript variables
• you are building tooling on top of Observable notebooks or Framework

When to avoid

• you just want to author notebooks on observablehq.com without custom embedding
• you need a general-purpose state management library for UI frameworks like React
• you want a static site generator - use Observable Framework instead

Facets

library · maturity active

state-management data-visualization developer-tools data-visualization data-science web-development developer-tools browser reactive-programming dataflow notebooks observable data-apps javascript nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="observablehq/runtime")