# w3c/css-houdini-drafts

Repository: https://github.com/w3c/css-houdini-drafts
Canonical: https://ross.abutalabs.com/products/css-houdini-drafts
Homepage: https://drafts.css-houdini.org/
Language: Bikeshed
License: NOASSERTION
License Family: other
Last push: 2026-08-06T15:57:16+00:00

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 96, release rhythm 35, longevity 100
- inputs: {"age_days": 4264, "days_push": 27, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1888, forks 149 (observed 2026-08-28T04:05:49.335414+00:00)

## What it is
The W3C CSS-TAG Houdini Task Force repository containing editor drafts of specifications that expose CSS engine internals (Paint API, Layout API, Animation Worklet, Typed OM, Parser API, etc.) to JavaScript. It is a standards-drafting repository rather than runnable software, with issues used for spec discussion.

## Use cases
- track the status of CSS Houdini specifications
- read editor drafts for the CSS Painting and Layout APIs
- file or follow specification issues for Houdini APIs
- learn how to extend CSS with worklets and custom properties
- check which Houdini features are ready for browser use
- contribute normative spec changes with web-platform-tests

## When to choose
- you are implementing or reviewing browser support for Houdini APIs
- you want authoritative, up-to-date specification text for Houdini modules
- you need to raise or track standards-level issues about CSS extensibility

## When to avoid
- you want a library or polyfill to use Houdini APIs in production code
- you need tutorials or end-user documentation rather than normative spec drafts
- you are looking for general CSS documentation unrelated to Houdini

## Facets
- artifact type: learning-resource
- maturity: active
- function: documentation, parser, animation, ui-components
- domain: web-development, frontend, documentation, web-design
- platform: browser
- tags: css-houdini, web-standards, specifications, w3c, css-apis, editor-drafts, web-server

## Member repositories
- w3c/css-houdini-drafts (main) score 75

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:49.335414+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:13:31.393025+00:00, confidence not recorded.
  - readme: https://github.com/w3c/css-houdini-drafts (fetched 2026-08-28T04:05:49.335414+00:00, sha bf69332b96cc)
  - homepage: https://drafts.css-houdini.org/ (fetched 2026-08-29T10:52:23.654948+00:00, sha ba9995e02325)
- Data as of 2026-08-30T08:39:29.467469+00:00.