# whatwg/fetch

Fetch Standard

Repository: https://github.com/whatwg/fetch
Canonical: https://ross.abutalabs.com/products/whatwg-fetch
Homepage: https://fetch.spec.whatwg.org/
Language: HTML
License: NOASSERTION
License Family: other
Topics: whatwg, fetch, standard
Last push: 2026-08-25T06:36:15+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 5103, "days_push": 8, "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 2250, forks 401 (observed 2026-08-28T04:06:30.904502+00:00)

## What it is
The WHATWG Fetch Standard, a living specification that defines requests, responses, and the fetching process across the web platform, including the fetch() JavaScript API and CORS protocol. It is maintained as an HTML source document (fetch.bs) with tests in web-platform-tests.

## Use cases
- understand how fetch() and CORS work in browsers
- look up redirect and cross-origin fetching semantics
- implement fetch in a new browser engine or runtime
- check how service workers interact with requests and responses
- reference CSP and Fetch Metadata integration rules
- contribute fixes or new features to the web fetching spec

## When to choose
- you need the authoritative, normative definition of fetching behavior on the web platform
- you are implementing fetch() in a browser, runtime, or polyfill
- you want to propose or review changes to web fetching semantics

## When to avoid
- you want a ready-to-use HTTP client library for your application
- you need tutorials or beginner documentation rather than a formal specification
- you are looking for Node.js-specific fetch implementation details

## Facets
- artifact type: learning-resource
- maturity: active
- function: http-client, web-framework, developer-tools
- domain: web-development, apis, documentation
- platform: browser, cross-platform
- tags: specification, whatwg, living-standard, fetch-api, cors, http, web-platform, standards, web-server

## Member repositories
- whatwg/fetch (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:30.904502+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 2026-08-30T02:43:53.149224+00:00, confidence not recorded.
  - readme: https://github.com/whatwg/fetch (fetched 2026-08-28T04:06:30.904502+00:00, sha 2505ab1c9de8)
  - homepage: https://fetch.spec.whatwg.org/ (fetched 2026-08-29T10:24:01.868494+00:00, sha 0e4dd7ea4565)
- Data as of 2026-08-30T08:39:29.467469+00:00.