posture · -0.2 posture industryresourceschema

Free

Score 24.5 / 100 20 providers +11 via APIs 12 APIs Search apis.io →

Providers using this tag (19)

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

Developing 2 Usable, with meaningful gaps to close
ScryfallMagic The GatheringCard DataOpen Data1 API52.0Alpha VantageFintechMarket DataStocksFX1 API49.6
Thin 12 Limited public surface area
Open-MeteoWeatherForecastHistorical WeatherAir Quality9 APIs37.9Free Currency APICurrencyExchange RatesFinanceHistorical Data1 API37.4Sunrise SunsetSunriseSunsetSolarAstronomy1 API34.8Bored APIActivitiesBoredomRandomEntertainment1 API34.7StooqFintechMarket DataStocksIndices1 API34.6The Holistic Care — THC Open Mindfulness APIMindfulnessEducationHealthOpenAPI1 API32.9Numbers APINumbersTriviaMathFacts2 APIs32.7TallyFormsSurveysNo-Code1 API29.8ISS Location API (Open Notify)SpaceISSInternational Space StationNASA1 API29.3Bored APIActivitiesBoredomCommunityDevelopment2 APIs28.5Cat Facts APICat FactsTriviaFunLearning1 API27.8Rick and Morty APIRick and MortyCharactersEpisodesEntertainment2 APIs27.4
Emerging 5 Early or largely undocumented
Corporate Bullshit Generator APIBuzzwordsComedyCorporate JargonFake Data1 API25.2ZeffyFundraisingNon-ProfitDonationsPayments1 API19.0Countries GraphQL APIGraphQLCountriesGeographyOpen Data1 API17.5Open Trivia DBGamesQuestionsTrivia1 API17.5PixabayStock MediaImageVideoIllustrations2 APIs14.0

APIs with this tag (11)

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 →

Exemplar 3 Complete, well-documented, and agent-ready
IBANforge Free APIFree endpoints — no payment required74.0Avalara Free APIFree tax rate lookup endpoints71.4DeBounce Logo APIFree company logo lookup service positioned as a drop-in replacement for the deprecated Clearbit Logo API. ...70.4
Strong 3 Solid coverage with minor gaps
Clearbit Autocomplete APIFree, unauthenticated company autocomplete: returns candidate companies (name, domain, logo) for a name fra...59.4Clearbit Logo API (retired)RETIRED 2025-12-08. The free Logo API returned a company logo image for a domain with no authentication. An...59.4BuiltWith Free APIThe Free API from BuiltWith — 1 operation(s) for free.55.4
Developing 2 Usable, with meaningful gaps to close
CatchDoms Expired Domains API Free APIThe Free API from CatchDoms Expired Domains API — 1 operation(s) for free.51.5Codag Free APIThe Free API from Codag — 1 operation(s) for free.47.0
Thin 3 Limited public surface area
DefiLlama Public APIFree, no-auth REST API exposing 31+ endpoints for protocol TVL, chain TVL, coin prices, stablecoin metrics,...29.4Frankfurter APIFree and open-source API for current and historical forex rates.29.3Solscan Public APIFree, lower-rate-limit public API exposing basic account, transaction, and token endpoints used by the Sols...27.8

Companies reaching this through an API (11)

These companies publish an API, specification or operation carrying “Free” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

Atomadic Tech Avalara BuiltWith CatchDoms Expired Domains API Clearbit (HubSpot Breeze Intelligence) Codag DeBounce DefiLlama Forex IBANforge Solscan

Score breakdown

Frequency
36.3
log-scaled weighted occurrences
Breadth
0.1
spread across providers
Quality lift
74.7
mean composite of providers using it
Cohesion
2.8
strength of nearest seed neighbor

Related tags

Open Source 6 co-occurrences Public APIs 5 co-occurrences MCP 5 co-occurrences Company 5 co-occurrences

Where this tag comes from

Provider tag20
Api tag11
Openapi tag5
Openapi op tag6

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/free"
All tags 
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/free"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/free/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 form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

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