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AddressMock API vs flaky API

Two free Test Data APIs compared on access, reliability and developer ratings, using data from our daily health checks.

The verdict

  • Choose AddressMock API if its data fits your use case better; on access and reliability it's level with flaky API.
  • Choose flaky API if its data fits your use case better; on access and reliability it's level with AddressMock API.

Side by side

AddressMock APIflaky API
What it doesRandom US, Hong Kong and Cape Verde addresses with matched city, state and ZIP.Fake REST API with chaos controls: force any status code, add latency, or a failure rate.
ProviderAddressMockflaky
API keyNot neededNot needed
HTTPSYesYes
CORS (browser calls)YesYes
Status todayOnline · 784 msOnline · 1050 ms
Uptime (30 days)UpUp
Developer ratingNot rated yetNot rated yet
PriceFree / free tierFree / free tier
AddressMock docs ↗flaky docs ↗

About each API

AddressMock logoAddressMock API

Random US, Hong Kong and Cape Verde addresses with matched city, state and ZIP.

Free fake address generator API: up to 100 US addresses per request with matched city, state and ZIP code, plus Hong Kong and Cape Verde. JSON, CORS enabled, no API key. 免费地址样例 API，无需注册，适合自动化测试和开发联调。

Strengths

  • No API key needed
  • Callable from the browser (CORS)
  • HTTPS

Ratings, reviews and FAQ →

flaky logoflaky API

Fake REST API with chaos controls: force any status code, add latency, or a failure rate.

Real data at real URLs, like every other fake API. The difference: you decide how it behaves. Force a 503, add latency, or make a third of requests fail — from the query string.

Strengths

  • No API key needed
  • Callable from the browser (CORS)
  • HTTPS

Ratings, reviews and FAQ →

How to choose between them

  • Prototyping or a tutorial? Pick the one that needs no API key (both qualify).
  • Calling from a web page? You need CORS. Otherwise route requests through your own server or a serverless function.
  • Going to production? Favour HTTPS, a strong uptime record and a provider with clear rate limits and terms. Check each API's docs before you commit.
  • Still unsure? Both are free to try: send one request to each and compare the data you get back.

AddressMock vs flaky FAQ

Do AddressMock API and flaky API need an API key?

Neither needs an API key; you can call both straight away.

More comparisons

AddressMock API alternatives · flaky API alternatives · best Test Data APIs