Add cross-origin-storage

[browser-specs-bot]

URL

https://wicg.github.io/cross-origin-storage/

Rationale

• See repository: WICG/cross-origin-storage
• Would-be shortname: cross-origin-storage

Additional properties

{}

[browser-specs-bot]

Changes to index.json

This update would trigger the following changes in index.json:

Add spec (1)

{
  "url": "https://wicg.github.io/cross-origin-storage/",
  "seriesComposition": "full",
  "shortname": "cross-origin-storage",
  "series": {
    "shortname": "cross-origin-storage",
    "currentSpecification": "cross-origin-storage",
    "title": "cross-origin-storage",
    "shortTitle": "cross-origin-storage",
    "nightlyUrl": "https://wicg.github.io/cross-origin-storage/"
  },
  "organization": "W3C",
  "groups": [
    {
      "name": "Web Platform Incubator Community Group",
      "url": "https://www.w3.org/community/wicg/"
    }
  ],
  "nightly": {
    "url": "https://wicg.github.io/cross-origin-storage/",
    "status": "Editor's Draft",
    "alternateUrls": [],
    "repository": "https://github.com/WICG/cross-origin-storage",
    "filename": "index.html"
  },
  "title": "cross-origin-storage",
  "source": "spec",
  "shortTitle": "cross-origin-storage",
  "categories": [
    "browser"
  ],
  "standing": "good"
}

Tests

With these changes, the following tests would fail:

The `index.json` list contains relative paths to source of nightly spec when repository is known

Expected:

[]

Actual:

[
  {
    "url": "https://wicg.github.io/cross-origin-storage/",
    "seriesComposition": "full",
    "shortname": "cross-origin-storage",
    "series": {
      "shortname": "cross-origin-storage",
      "currentSpecification": "cross-origin-storage",
      "title": "cross-origin-storage",
      "shortTitle": "cross-origin-storage",
      "nightlyUrl": "https://wicg.github.io/cross-origin-storage/"
    },
    "organization": "W3C",
    "groups": [
      {
        "name": "Web Platform Incubator Community Group",
        "url": "https://www.w3.org/community/wicg/"
      }
    ],
    "nightly": {
      "url": "https://wicg.github.io/cross-origin-storage/",
      "status": "Editor's Draft",
      "alternateUrls": [],
      "repository": "https://github.com/WICG/cross-origin-storage",
      "filename": "index.html"
    },
    "title": "cross-origin-storage",
    "source": "spec",
    "shortTitle": "cross-origin-storage",
    "categories": [
      "browser"
    ],
    "standing": "good"
  }
]

Crawl results for Explainer for the Cross-Origin Storage (COS) API | cross-origin-storage

Crawl summary:

• Title: Explainer for the Cross-Origin Storage (COS) API | cross-origin-storage
• Date: 15 January 2026
• Canonical URL: https://wicg.github.io/cross-origin-storage/
• Spec defines:
  • Algorithms: 2 found
  • Headings: 56 found
  • IDs: 56 found
  • Links: 58 rawlinks
  • References: 5 normative
• No CDDL, CSS, Events, Terms, Web IDL definitions found

[tidoust]

No spec for now. Link targets an explainer.