Frontend
Variants seen in the corpus:
Front EndFrontendfrontend
Providers using this tag (29)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Developing 3 Usable, with meaningful gaps to close
Emerging 14 Early or largely undocumented
Minimal 3 Almost no public developer surface
Unrated 2 Not yet scored
APIs with this tag (32)
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 →
Strong 11 Solid coverage with minor gaps
Clerk Astro SDKAdapter for the Astro framework with components and middleware.Clerk Frontend APIBrowser-facing API consumed by Clerk's frontend SDKs and ClerkJS for sign-up, sign-in, session refresh, and...Clerk JavaScript SDKOfficial ClerkJS browser library and monorepo of framework adapters (Next.js, React, Expo, React Router, As...Clerk Next.js SDKNext.js integration covering App Router and Pages Router, middleware, route handlers, server components, an...Clerk React Router SDKAdapter for React Router v7 (Remix successor) covering loaders, actions, and server-rendered authentication.Clerk React SDKReact components, hooks, and providers from the @clerk/clerk-react package for plain React SPAs.Clerk TanStack Start SDKAdapter for TanStack Start (React full-stack framework) with route-level authentication helpers.Agave File Manager ComponentAgave File Manager is a front-end component that allows users to pick files and folders from linked constru...Agave Link ComponentAgave Link is a front-end component that enables users to select source systems, authenticate with their co...Moov DropsMoov Drops are pre-built, drop-in web UI components for complicated payment and account management flows. T...Trigger.dev Realtime APIThe Trigger.dev Realtime API streams live run state and typed stream data to backend and frontend clients. ...
Developing 7 Usable, with meaningful gaps to close
Speakeasy React Query HooksTurns your OpenAPI spec into fully typed TanStack Query hooks with built-in caching, retries, and paginatio...Tidio Widget SDKJavaScript SDK for embedding and customizing the Tidio chat widget on websites. Supports user tracking, cus...Ory frontend APIEndpoints used by frontend applications (e.g. Single-Page-App, Native Apps, Server Apps, ...) to manage a u...Stigg React SDKOfficial React frontend SDK for rendering pricing tables, entitlement gates, and usage meters in React appl...Lightning Web Components Runtime APICore JavaScript APIs for building Lightning Web Components including decorators, wire service, and componen...JupyterLab Extension APIJavaScript and TypeScript API used to build JupyterLab extensions and plugins. JupyterLab is composed of pl...Bunny.net OptimizerImage and front-end optimisation service attached to Pull Zones - image resizing, format conversion (WebP/A...
Thin 10 Limited public surface area
QlikView AccessPoint APIWeb-based API for QlikView AccessPoint portal functionality.Split React SDKThe Split React SDK provides React-specific components and hooks for integrating feature flags including a ...hCaptcha JavaScript WidgetThe hCaptcha JS widget renders the visible or invisible challenge on a page and produces a response token o...Friendly Captcha WidgetThe Friendly Captcha widget is the JavaScript component that runs the proof-of-work puzzle in the browser a...Manifold Claim WidgetsJavaScript widget library for embedding NFT minting and claim flows into any website or dApp. Served from c...Wix HeadlessWix Headless enables developers to use Wix business solutions as a backend while building custom frontends ...Turnstile Client WidgetThe Turnstile client widget renders the challenge in the browser. It is loaded via a script tag at challeng...DataDome JavaScript TagThe DataDome JS tag collects browser, device, and behavioral signals that are forwarded to the DataDome dec...Push Chain UI KitReact UI component library providing PushUniversalWalletProvider and PushUniversalAccountButton for abstrac...BuildKit Dockerfile FrontendDockerfile and Containerfile parsing in modern Docker is performed by BuildKit's Dockerfile frontend, distr...
Emerging 4 Early or largely undocumented
Stack Auth React / Next.js SDKFrontend SDK distributed as @stackframe/stack on npm. Provides React components, hooks, and Next.js App Rou...Lens React SDKThe Lens React SDK provides React hooks (useAccount, usePosts, useFollow, useLogin, etc.) layered on top of...Shogun Frontend APIGraphQL API behind the Shogun Frontend headless commerce product, used to query storefront content, pages, ...Fluid CSS FrameworkFluid is a CSS framework that provides a responsive grid system, UI components, and utility classes for bui...
Companies reaching this through an API (23)
These companies publish an API, specification or operation carrying “Frontend” 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.
Agave
Bunny.net
Clerk
Cloudflare Turnstile
Containerfile
DataDome
Friendly Captcha
hCaptcha
JupyterLab
Lens Protocol
Manifold
Moov
Ory
Push Protocol
QlikView
Shogun
Speakeasy
Split
Stack Auth
Stigg
Tidio
Trigger.dev
Wix
Score breakdown
Frequency
48.8
log-scaled weighted occurrences
Breadth
0.8
spread across providers
Quality lift
26.4
mean composite of providers using it
Cohesion
0.0
strength of nearest seed neighbor
Related tags
Single Page Application 8 co-occurrences
React 14 co-occurrences
Web Development 10 co-occurrences
Dependency Injection 7 co-occurrences
Guards 6 co-occurrences
Typed Forms 6 co-occurrences
Directives 6 co-occurrences
Reactive Forms 6 co-occurrences
Where this tag comes from
Provider tag29
Api tag32
Openapi tag1
Openapi op tag12
Cohort brief
Auto-generatedThe 27 providers in the APIs.io catalog tagged Frontend, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
27
all scored
Mean Kin Score
23.3
-0.6 vs catalog 23.9
Mean Agent Readiness
6.7
-5.3 vs catalog 12
Spread
6.4–50.2
median 17.2 · σ 11.4
How the 27 split by band
Exemplar 0Strong 0Developing 3Thin 7Emerging 14Minimal 3
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Operational Transparency | 22.1 | 14 | +8.1 | 27 |
| Developer Ergonomics | 30.2 | 23.4 | +6.8 | 27 |
| Discoverability | 64.9 | 61.2 | +3.7 | 27 |
| Contract Governance | 5.3 | 6.4 | -1.1 | 27 |
| Access Clarity | 21.7 | 26.5 | -4.8 | 27 |
| Contract Quality | 10.9 | 19.8 | -8.9 | 27 |
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
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 10% | 10% | 0 |
| MCP server (first-party) | 14% | 13% | +1 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 3% | 11% | -8 |
| Security | 86% | 97% | -11 |
| Arazzo workflows | 0% | 2% | -2 |
| Governance rules | 14% | 14% | 0 |
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 Amazon Amplify 50.2
- 2 Font Awesome 49.8
- 3 Lightning Web Components 41.8
- 4 Chromatic 33.5
- 5 TawkitAI 32.9
- 6 Plasmic 32.1
- 7 Vite 31.8
- 8 21st 30.4
- 9 Vue.js 29.8
- 10 Bit 28.9
Top by Agent Readiness
- 1 Chromatic 24.1
- 2 Amazon Amplify 20.1
- 3 Plasmic 19.8
- 4 Vite 19.8
- 5 Font Awesome 19.1
- 6 21st 14.7
- 7 Lightning Web Components 10.1
- 8 Bit 9.6
- 9 Angular 6.1
- 10 Vue.js 3.8
All 29 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
15 September 2026, across 27661
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.
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.