ChangeTip website screenshot

ChangeTip

ChangeTip was a Bitcoin micropayments and social-tipping service built by ChangeCoin, Inc. (San Francisco), founded in 2013. It let people send small bitcoin tips across Twitter, Reddit, YouTube, Twitch, Facebook, Slack, email, and text by replying with an amount, settling the micropayment behind the scenes to a hosted wallet. ChangeTip published an open API and first-party client libraries (Python and JavaScript) so the community could build tipping integrations and pair external wallets. The company raised roughly $3.5M and was backed by 500 Startups, Pantera Capital, and Gil Penchina. ChangeCoin was acquired by Airbnb in 2016 and the tipping service was discontinued in November 2016; the site now serves only a shutdown notice with balance withdrawal. This profile is retained as a historical/defunct provider record in the API Evangelist network.

ChangeTip is profiled on the APIs.io network. Tagged areas include Company, Bitcoin, Cryptocurrency, Micropayments, and Payments.

🌐 Visit website 📡 Source on GitHub
9.4/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyBitcoinCryptocurrencyMicropaymentsPaymentsTippingSocial MediaWalletDefunct

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 9.4/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 1.3 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/changetip: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Changetip Domain Security

no transport/DNS hardening detected

SECURITY

Resources

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: changetip
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/changetip.png
name: ChangeTip
description: ChangeTip was a Bitcoin micropayments and social-tipping service built by ChangeCoin, Inc. (San Francisco), founded
  in 2013. It let people send small bitcoin tips across Twitter, Reddit, YouTube, Twitch, Facebook, Slack, email, and text
  by replying with an amount, settling the micropayment behind the scenes to a hosted wallet. ChangeTip published an open
  API and first-party client libraries (Python and JavaScript) so the community could build tipping integrations and pair
  external wallets. The company raised roughly $3.5M and was backed by 500 Startups, Pantera Capital, and Gil Penchina. ChangeCoin
  was acquired by Airbnb in 2016 and the tipping service was discontinued in November 2016; the site now serves only a shutdown
  notice with balance withdrawal. This profile is retained as a historical/defunct provider record in the API Evangelist network.
url: https://raw.githubusercontent.com/api-evangelist/changetip/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
x-status: defunct
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Bitcoin
- Cryptocurrency
- Micropayments
- Payments
- Tipping
- Social Media
- Wallet
- Defunct
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.changetip.com
- type: GitHubOrganization
  url: https://github.com/changecoin
- type: Packages
  url: packages/changetip-packages.yml
- type: SDKs
  url: packages/changetip-packages.yml
- type: DomainSecurity
  url: security/changetip-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence