emerging · 0.8 market domain

Headless

Score 21.4 / 100 25 providers 19 APIs Search apis.io →

Providers using this tag (25)

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

Exemplar 2 Complete, well-documented, and agent-ready
OptimizelyA/B TestingContent ManagementCustomer DataE-Commerce50 APIs75.1NovuNotificationMessagingIn-AppEmail19 APIs66.6
Strong 4 Solid coverage with minor gaps
Wix.comCompanyWebsite BuilderE-CommerceCMS2 APIs63.5AntavoLoyaltyCustomer LoyaltyRewardsEnterprise17 APIs62.0KenticoCMSContent ManagementDigital Experience PlatformGraphQL5 APIs61.1ShopifyCommerceE-CommercePaymentsRetail213 APIs60.4
Developing 6 Usable, with meaningful gaps to close
DealHubCompanyCPQQuote-to-CashContract Lifecycle Management11 APIs49.8WooCommerceE-CommerceOpen-SourceOrderProduct21 APIs47.9MikMakAnalyticsCommerceE-CommerceMulti-Channel5 APIs47.6TableauAnalyticsBusiness IntelligenceDashboardsData Visualization25 APIs46.6MedusaCommerceE-CommerceOpen-Source17 APIs40.7Commerce LayerCommerceComposableE-Commerce12 APIs39.4
Thin 11 Limited public surface area
SaleorCommerceE-CommerceGraphQL9 APIs38.8Spree CommerceCommerceE-CommerceOpen-Source97 APIs37.7Open LoyaltyLoyaltyGamificationRewardsPoints7 APIs36.6TYPO3CMSContent ManagementEnterprisePHP6 APIs36.6WixCMSE-CommerceWebsite Builder9 APIs34.9PlasmicVisual BuilderHeadless CMSReactNext.js11 APIs34.2Craft CMSCMSContent ManagementGraphQLREST2 APIs33.5PayloadApplication FrameworkCMSContent5 APIs33.5Mighty NetworksCommunityCoursesMembershipCreator Economy26 APIs31.5Shopify Storefront APICommerceE-CommerceGraphQL3 APIs30.5drupal9 APIs29.9
Emerging 2 Early or largely undocumented
LiferayOpen-SourceDigital ExperienceDXPRoles1 API24.2MedusaE-CommerceHeadless CommerceOpen-SourceGraphQL1 API15.2

APIs with this tag (18)

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 2 Complete, well-documented, and agent-ready
Optimizely CMS Content Delivery API v3.0Read-only content delivery from Optimizely CMS — content by identifier, children, ancestors, and site metad...75.1Novu Inbox / In-App APIClient-side API and React Inbox component for rendering an embedded in-app notification center, marking not...66.6
Strong 4 Solid coverage with minor gaps
Antavo Display APIThe primary headless API for building the member-facing loyalty experience - listing earn and spend activit...62.0Kentico Headless GraphQL APIAuto-generated GraphQL API endpoint for each headless channel in Xperience by Kentico. Supports querying co...61.1Shopify HydrogenHydrogen is Shopify's React-based framework for building custom storefronts powered by the Storefront API. ...60.4Shopify Storefront APIThe Storefront API is a GraphQL API that provides commerce primitives to build custom, scalable, and perfor...60.4
Developing 3 Usable, with meaningful gaps to close
WooCommerce GraphQL APIWooCommerce GraphQL support is provided by the WPGraphQL WooCommerce extension (WooGraphQL), an open-source...47.9MikMak Headless Commerce APIThe MikMak Headless Commerce API (v1) lets brands and their authorized agencies power commerce experiences ...47.6Tableau VizQL Data ServiceThe VizQL Data Service provides a programmatic HTTP interface to query published data sources outside of Ta...46.6
Thin 8 Limited public surface area
TYPO3 Headless JSON Content APIThe TYPO3 Headless extension provides a JSON API for delivering page content, navigation structures, layout...36.6Wix HeadlessWix Headless enables developers to use Wix business solutions as a backend while building custom frontends ...34.9Plasmic Loader (Headless API)Runtime fetching API used by React, Next.js, and Gatsby integrations to pull Studio-published pages and com...34.2Craft CMS GraphQL APIAuto-generated GraphQL API providing schema-based access to Craft CMS content including entries, assets, ca...33.5PayloadPayload is a TypeScript-first headless CMS and application framework that automatically generates REST, Gra...33.5Mighty Networks Headless GraphQL APIBeta GraphQL interface that powers the official Mighty Networks clients, for building custom user-context c...31.5Shopify HydrogenHydrogen is Shopify's opinionated React-based framework for building headless storefronts powered by the St...30.5Drupal GraphQL APIThe Drupal GraphQL module is a contributed module that enables developers to craft and expose a GraphQL sch...29.9
Emerging 1 Early or largely undocumented
Medusa GraphQL API15.2

Score breakdown

Frequency
40.9
log-scaled weighted occurrences
Breadth
0.7
spread across providers
Quality lift
52.3
mean composite of providers using it
Cohesion
3.8
strength of nearest seed neighbor

Related tags

Next.js 6 co-occurrences CMS 8 co-occurrences Cart 8 co-occurrences Storefront 5 co-occurrences React 5 co-occurrences Content Management 5 co-occurrences Commerce 8 co-occurrences Checkout 7 co-occurrences

Where this tag comes from

Provider tag14
Api tag19

Cohort brief

Auto-generated

The 25 providers in the APIs.io catalog tagged Headless, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
25
all scored
Mean Kin Score
43.1
+22.4 vs catalog 20.7
Mean Agent Readiness
27.3
+17.6 vs catalog 9.7
Spread
15.2–75.1
median 38.8 · σ 14.4
How the 25 split by band
Exemplar 2Strong 4Developing 6Thin 11Emerging 2Minimal 0
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 56.6 17.5 +39.1 25
Operational Transparency 33.1 11.3 +21.8 25
Access Clarity 42.7 22.3 +20.4 25
Developer Ergonomics 37.6 17.9 +19.7 25
Discoverability 69.9 60.4 +9.5 25
Contract Governance 11.2 6.4 +4.8 25

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes
ArtifactThis cohortCatalogDifference
MCP server (any) 32% 16% +16
MCP server (first-party) 20% 7% +13
Agent Skills 0% 0% 0
OAuth scopes 24% 9% +15
Security 100% 88% +12
Arazzo workflows 12% 2% +10
Governance rules 32% 13% +19

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score
  1. 1 Optimizely 75.1
  2. 2 Novu 66.6
  3. 3 Wix.com 63.5
  4. 4 Antavo 62
  5. 5 Kentico 61.1
  6. 6 Shopify 60.4
  7. 7 DealHub 49.8
  8. 8 WooCommerce 47.9
  9. 9 MikMak 47.6
  10. 10 Tableau 46.6
Top by Agent Readiness
  1. 1 DealHub 46.9
  2. 2 Spree Commerce 41.4
  3. 3 Shopify 40.6
  4. 4 Optimizely 39.4
  5. 5 Wix.com 34.9
  6. 6 Novu 34.2
  7. 7 Antavo 34
  8. 8 MikMak 33.1
  9. 9 Wix 32.9
  10. 10 WooCommerce 31.1
All 25 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 25 August 2026, across 26891 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

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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

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This tag 
curl "https://apis.io/api/v1/tags/headless"
All tags 
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As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/headless"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/headless/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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