stale · 1.9 capability

Test Data

Score 14.4 / 100 27 providers 21 APIs Search apis.io →

Providers using this tag (27)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Strong 1 Solid coverage with minor gaps

MockarooMockaroo is a realistic mock data generator and API mocking service used by developers and QA teams to prod...4 APIs56.2

Thin 4 Limited public surface area

SynthesizedSynthesized is an AI-native test data management (TDM) platform that automates the provisioning of producti...1 API29.3 Random User GeneratorFree random user data API for generating realistic fake user profiles with names, addresses, photos, and co...1 API28.5 Corporate Bullshit Generator APIThe Corporate Bullshit Generator API is a free public REST API that returns randomly-generated corporate ja...1 API28.0 FakerAPIFakerAPI is a free, no-authentication REST API that returns realistic fake data for developers, designers, ...10 APIs26.4

Minimal 22 Almost no public developer surface

Bacon IpsumA Meatier Lorem Ipsum Generator1 API5.7 Dicebear AvatarsGenerate random pixel-art avatars1 API5.7 English Random WordsGenerate English Random Words with Pronunciation1 API5.7 FakeJSONService to generate test and fake data1 API5.7 GeneradorDNIData generator API. Profiles, vehicles, banks and cards, etc1 API5.7 ItsThisForThatGenerate Random startup ideas1 API5.7 JSONPlaceholderFake data for testing and prototyping1 API5.7 LoripsumThe "lorem ipsum" generator that doesn't suck1 API5.7 MailsacDisposable Email1 API5.7 MetaphorsumGenerate demo paragraphs giving number of words and sentences1 API5.7 QuickMockerAPI mocking tool to generate contextual, fake or random data1 API5.7 Random DataRandom data generator1 API5.7 RandommerRandom data generator1 API5.7 RoboHashGenerate random robot/alien avatars1 API5.7 Spanish random namesGenerate spanish names (with gender) randomly1 API5.7 Spanish random wordsGenerate spanish words randomly1 API5.7 This Person Does not ExistGenerates real-life faces of people who do not exist1 API5.7 ToolcartonGenerate random testimonial data1 API5.7 UUID GeneratorGenerate UUIDs1 API5.7 What The CommitRandom commit message generator1 API5.7 Yes NoGenerate yes or no randomly1 API5.7 QualteraQualtera was a French software company, founded in 2010 and backed by Serena, that built high-volume big da...4.6

APIs with this tag (21)

Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Minimal 21 Almost no public developer surface

Bacon IpsumA Meatier Lorem Ipsum Generator5.7 Dicebear AvatarsGenerate random pixel-art avatars5.7 English Random WordsGenerate English Random Words with Pronunciation5.7 FakeJSONService to generate test and fake data5.7 GeneradorDNIData generator API. Profiles, vehicles, banks and cards, etc5.7 ItsThisForThatGenerate Random startup ideas5.7 JSONPlaceholderFake data for testing and prototyping5.7 LoripsumThe "lorem ipsum" generator that doesn't suck5.7 MailsacDisposable Email5.7 MetaphorsumGenerate demo paragraphs giving number of words and sentences5.7 QuickMockerAPI mocking tool to generate contextual, fake or random data5.7 Random DataRandom data generator5.7 RandommerRandom data generator5.7 RoboHashGenerate random robot/alien avatars5.7 Spanish random namesGenerate spanish names (with gender) randomly5.7 Spanish random wordsGenerate spanish words randomly5.7 This Person Does not ExistGenerates real-life faces of people who do not exist5.7 ToolcartonGenerate random testimonial data5.7 UUID GeneratorGenerate UUIDs5.7 What The CommitRandom commit message generator5.7 Yes NoGenerate yes or no randomly5.7

Score breakdown

Frequency

45.7

log-scaled weighted occurrences

Breadth

0.7

spread across providers

Quality lift

12.4

mean composite of providers using it

Cohesion

2.2

strength of nearest seed neighbor

Related tags

Public APIs 23 co-occurrences

Where this tag comes from

Provider tag27

Api tag21

Work with this as data

Every tag here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for tags

7 MCP tools reach this

find_tagsBrowse and filter every tag in the catalog.
get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools

Call it yourself

curl for this page

This tag

curl "https://apis.io/api/v1/tags/test-data"

All tags

curl "https://apis.io/api/v1/tags?limit=25"

As a scored cohort

curl "https://apis.io/api/v1/cohorts/tag/test-data"

The distribution (Pro)

curl "https://apis.io/api/v1/cohorts/tag/test-data/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.