aid: cardspring
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/cardspring.png
name: CardSpring
description: 'CardSpring was a card-linked offers and payments platform that provided an API for
  building card-linked applications, letting developers connect merchant point-of-sale systems and
  consumer payment cards to deliver digital coupons, loyalty rewards, and receipt-level offers. It was
  surfaced as a portfolio company of Accel and DCVC and added to the API Evangelist network as a stub
  for enrichment. The company was acquired by Twitter in 2014 and subsequently wound down; as of this
  pass every path on cardspring.com (including the old /help/developer_faq.html) 307-redirects to an
  Afternic "cardspring.com is for sale" domain-sale lander, developer.cardspring.com fails TLS with no
  matching certificate, and no first-party CardSpring packages remain on npm or RubyGems. There is no
  live developer portal, documentation, API, or OpenAPI surface to enrich. Sector: payments.'
url: https://raw.githubusercontent.com/api-evangelist/cardspring/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- accel
- dcvc
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Payments
- Card Linking
- Offers
- Loyalty
- Commerce
- Defunct
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: http://cardspring.com/
x-enrichment:
  date: '2026-07-20'
  status: nochange
  artifacts_added: 0
  pass: local-v1