specification: API Commons Packages
specificationVersion: '0.1'
provider: Yahoo
providerId: yahoo
generated: '2026-08-28'
method: searched
source: >-
  registry.npmjs.org , pypi.org , https://developer.yahoo.com/ ,
  https://help.yahooinc.com/dsp-api/docs/postman-toolkit , https://github.com/yahoo
description: >-
  Client-library inventory for the Yahoo API surface. THE HEADLINE FINDING IS AN ABSENCE - Yahoo
  publishes no first-party SDK, in any language, for any of its APIs. The github.com/yahoo
  organisation is large and active (Elide, Vespa, Screwdriver, Athenz, Fluxible, CMAK) but every
  repository in it is infrastructure or front-end tooling; none is a client for the Fantasy
  Sports, DSP Traffic, DSP Reporting, Conversion or DataX APIs. Yahoo's own answer to "how do I
  call this" is a Postman collection, not a library. Every package below is community-maintained
  and carries official:false. No SDKs pointer is emitted in apis.yml, because sdk_count would
  otherwise credit Yahoo with libraries other people wrote.
official_sdk_count: 0
packages:
  - name: yahoo-fantasy
    registry: npm
    url: https://www.npmjs.com/package/yahoo-fantasy
    language: JavaScript
    api: Yahoo Fantasy Sports API
    official: false
    maintainer: whatadewitt (community)
    repository: https://github.com/whatadewitt/yfsapi
    version: 5.3.0
    published: '2024-04-19'
    note: >-
      The most-used Node wrapper for the Fantasy Sports API. Last release 2024-04-19, more than
      two years stale at the time of this pass.
  - name: yahoo-fantasy-api
    registry: pypi
    url: https://pypi.org/project/yahoo-fantasy-api/
    language: Python
    api: Yahoo Fantasy Sports API
    official: false
    maintainer: spilchen (community)
    repository: http://github.com/spilchen/yahoo_fantasy_api
    version: 2.12.3
    published: '2026-04-03'
    note: The most currently maintained Fantasy Sports client found in any registry.
  - name: yfpy
    registry: pypi
    url: https://pypi.org/project/yfpy/
    language: Python
    api: Yahoo Fantasy Sports API
    official: false
    maintainer: uberfastman (community)
    version: 17.0.0
    published: '2025-09-14'
    note: Python wrapper with response-model classes over the Fantasy Sports XML/JSON payloads.
  - name: yahoo-oauth
    registry: pypi
    url: https://pypi.org/project/yahoo-oauth/
    language: Python
    api: Yahoo OAuth 2.0 / identity
    official: false
    maintainer: community
    version: 2.1.1
    published: '2024-12-17'
    note: Handles the three-legged Yahoo OAuth dance; commonly paired with the Fantasy clients.
first_party_distribution:
  - name: Yahoo DSP API Postman collection
    kind: postman-collection
    registry: postman
    url: >-
      https://www.postman.com/yahoodsp/workspace/public/collection/1195613-217c82de-af78-40c1-a11d-08a4191b27de
    workspace: https://www.postman.com/yahoodsp/workspace/public
    official: true
    version: null
    published: null
    note: >-
      Yahoo's only first-party machine-readable client artifact. Published in a public Postman
      workspace under the yahoodsp account and covering both the Trafficking and Reporting
      collections, with a pre-request script that mints the JWT access token. Postman publishes no
      version or release date for a shared collection, so both fields are a checked null rather
      than an unrecorded gap - a consumer cannot tell which revision they imported either.
    status: 200
registries_checked:
  - registry: npm
    result: no first-party Yahoo API client (scope searches and @yahoo/@yahooinc candidates all 404)
  - registry: pypi
    result: no first-party Yahoo API client
  - registry: github.com/yahoo
    result: >-
      100+ public repositories, all infrastructure/front-end OSS; no API client for a Yahoo
      commercial API
  - registry: maven-central
    result: not probed in this pass
  - registry: nuget
    result: not probed in this pass
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com