established · 0.0 capability schema

JavaScript

Score 27.4 / 100 64 providers +172 via APIs 235 APIs Search apis.io →

Providers using this tag (64)

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

Strong 2 Solid coverage with minor gaps
Developing 10 Usable, with meaningful gaps to close
Thin 17 Limited public surface area
Emerging 30 Early or largely undocumented
Minimal 3 Almost no public developer surface
Unrated 2 Not yet scored

APIs with this tag (232)

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 10 Complete, well-documented, and agent-ready
Strong 25 Solid coverage with minor gaps
BrowserStack JavaScript Testing APIThe BrowserStack JavaScript Testing API provides HTTPS-based access to run JavaScript unit tests across 300...66.1ArcGIS Maps SDK for JavaScriptThe ArcGIS Maps SDK for JavaScript enables web developers to build compelling 2D and 3D mapping application...65.8Clerk JavaScript SDKOfficial ClerkJS browser library and monorepo of framework adapters (Next.js, React, Expo, React Router, As...65.8Red5 Pro WebRTC SDKThe Red5 Pro WebRTC SDK is a JavaScript library for integrating low-latency live streaming publish and subs...65.6CloudKit JSCloudKit JS is Apple's JavaScript SDK that wraps the CloudKit Web Services REST API for browser apps. It pr...65.0Koala Web Pixel (JavaScript SDK)The client-side pixel loaded from cdn.getkoala.com/v1/{key}/sdk.js. Exposes ko.identify(), ko.track(), ko.q...64.3Medusa JS SDK (@medusajs/js-sdk)Official TypeScript / JavaScript SDK wrapping the Store and Admin REST APIs - typed clients, auth helpers, ...62.7Raygun Source Maps APIUpload, list, retrieve, update, and delete JavaScript source maps for symbolicating minified front-end stac...61.9Redox HL7 v2 Libraryredox-hl7-v2 is Redox's open-source JavaScript library for parsing and generating HL7 v2 messages, useful f...61.8Model-Driven Apps Client APIClient API reference for model-driven apps providing JavaScript libraries for form scripting, UI manipulati...60.8Playable Campaign SDKBrowser-side JavaScript SDK (`@playable-marketing/campaign-sdk`) that exposes a promise-based `window.sdk` ...60.2Node.js Driver for SQL ServerNode.js driver (tedious/mssql) for connecting JavaScript and TypeScript applications to SQL Server and Azur...59.6Node.js Driver for SQL Server (tedious)Open-source JavaScript implementation of the TDS protocol for connecting to SQL Server from Node.js on Wind...59.6Clerk.js Client LibraryClerk.js is the browser-side JavaScript library for embedding Clerk.io recommendation slots, search, and em...59.1Moov.jsMoov.js is a client-side JavaScript SDK designed to streamline interactions with the Moov API while keeping...58.9Fasten Connect Quickstart SampleMIT-licensed JavaScript starter project that demonstrates an end-to-end Fasten Connect integration — creden...58.8Word JavaScript APIJavaScript API for building Word add-ins and interacting with Word document content.58.5RB2B Pixel and Destination WebhooksThe RB2B JavaScript pixel installed in a site header (or via Google Tag Manager / Segment / RudderStack / S...58.2Apple Pay on the Web APIJavaScript APIs for implementing Apple Pay payments in Safari, supporting both the Apple Pay JS API and the...57.1Safari Web Content APIWebKit APIs for interacting with web content, including JavaScript evaluation and DOM manipulation.57.1Sketchfab Viewer APIClient-side JavaScript library for controlling an embedded Sketchfab 3D viewer. Exposes camera control, scr...56.9MapKit JSEmbed interactive Apple Maps on websites.55.1Truework.js (Truework Direct)Truework.js is the client-side JavaScript library that powers Truework Direct, the borrower-driven (consume...55.1Digioh JavaScript APIClient-side browser API exposed by the Digioh widget runtime once the Digioh JavaScript tag is installed on...54.9Amazon Connect Streams SDKAmazon Connect Streams is a browser-based integration API and JavaScript SDK that enables embedding and con...54.8
Developing 84 Usable, with meaningful gaps to close
Sailthru JavaScript API (Personalization Engine)The client-side Sailthru JavaScript tag (spm.v1.min.js, served from ak.sail-horizon.com) used for on-site b...54.2Osano CMP JavaScript APIBrowser-side JavaScript API for the Osano Consent Management Platform, loaded from cmp.osano.com. Exposes f...53.7CSG Forte.jsForte.js is a JavaScript library for secure browser-based payment tokenization. It enables web applications...53.6Merchant Sample (JavaScript)Simple JavaScript merchant checkout example for Token.io.53.3Token.io JavaScript SDKOfficial Token.io JavaScript SDK for Node.js and browser environments interacting with the Token System and...53.3Adobe Express Embed SDKA JavaScript SDK for embedding Adobe Express creative editing tools directly into web applications. The SDK...52.8Adobe UXP (Unified Extensibility Platform)The Unified Extensibility Platform (UXP) is Adobe's modern cross-app plugin development framework replacing...52.8Livepeer JavaScript/TypeScript SDKOfficial TypeScript/JavaScript SDK (@livepeer/ai or livepeer) for the Livepeer Studio REST API and AI endpo...52.8CustomerOS Website TrackerClient-side JavaScript tracker that captures page views and custom events, exposes window.cos.identify() fo...52.4Adobe Photoshop UXP Plugin APIThe modern plugin development platform for Photoshop, replacing the legacy CEP framework. UXP (Unified Exte...52.1Adobe Photoshop UXP ScriptingA modern scripting system for Photoshop that allows developers to execute standalone JavaScript files with ...52.1Felt JavaScript SDKJavaScript SDK for embedding, controlling, and extending Felt maps in external web applications. Supports t...52.0Luciq React Native SDK (formerly Instabug-React-Native)React Native plugin wrapping the native iOS and Android Luciq SDKs. Adds Expo integration, CodePush / Over-...52.0WeChat Mini Programs Client APIClient-side JavaScript API exposed inside the WeChat runtime to Mini Programs and Mini Games. Covers networ...51.9App Studio Web SDKWeb SDK for building custom applications using HTML5 and JavaScript within the Eikon App Studio environment...51.8Office Add-ins APIJavaScript API for building add-ins for Word, Excel, PowerPoint, and Outlook.51.8Refinitiv Data Library for TypeScriptTypeScript and JavaScript library providing ease-of-use interfaces for accessing financial data and service...51.8Runway Node.js SDKThe Runway Node.js SDK provides a JavaScript and TypeScript library for integrating with the Runway API. Su...51.6Apollo Client (Web)Apollo Client is a comprehensive state management library for JavaScript and TypeScript applications. It is...50.9Apollo ServerApollo Server is an open-source, spec-compliant GraphQL server compatible with any GraphQL client. It is th...50.9OptinMonster JavaScript Events APIA client-side event API exposed by the OptinMonster embed script (served from a.omappapi.com/app/js/api.min...50.9Tidio Widget SDKJavaScript SDK for embedding and customizing the Tidio chat widget on websites. Supports user tracking, cus...50.8Tableau Embedding APIJavaScript API for embedding Tableau visualizations in web applications with advanced interaction capabilit...50.4Tableau Extensions APIThe Tableau Extensions API allows developers to create dashboard extensions and viz extensions that users c...50.4Tableau Web Data ConnectorThe Tableau Web Data Connector (WDC) provides an SDK for building connectors to any data accessible over HT...50.4SAP Analytics Cloud Analytics Designer APIJavaScript-based API for building interactive analytic applications in SAP Analytics Cloud Analytics Design...50.3SAP Lumira Discovery Extensions APIJavaScript API for creating custom visualizations and extensions in SAP Lumira.50.3turbopuffer TypeScript SDKOfficial TypeScript / JavaScript client library for the turbopuffer REST API, Stainless-generated and publi...49.9Shift4 JavaScript LibraryThe Shift4 JavaScript library provides secure, customizable HTML/CSS components for building on-page paymen...49.7LanceDB TypeScript SDKNode.js / TypeScript / JavaScript client library for LanceDB OSS, Cloud, and Enterprise. Bundles native bin...49.6Neon Serverless DriverThe Neon Serverless Driver is a low-latency JavaScript and TypeScript driver that enables querying Neon Pos...49.6Chroma JavaScript ClientThe Chroma JavaScript and TypeScript Client is a first-party SDK for interacting with Chroma from JavaScrip...49.3npm CLIThe npm CLI is the official command-line interface for the npm package manager, providing developers with t...49.3npm Registry APIThe npm Registry API provides programmatic access to the npm package registry, the largest software registr...49.3Visio JavaScript APIJavaScript API for building add-ins and extending Visio functionality in the browser with access to documen...48.8Excel JavaScript APIOffice Add-ins API for building custom functionality within Excel using JavaScript and TypeScript.48.2Heidi Widget SDKEmbeddable JavaScript widget for dropping Heidi's ambient documentation experience directly into a web-base...48.2Gemini Node.js SDKNode.js client library for the Gemini API.48.0SharePoint CSOM (Client-Side Object Model)Client-side object model for SharePoint that provides access to SharePoint objects through .NET managed or ...48.0Bread JavaScript SDKBrowser-side JavaScript SDK that exposes the BreadPayments object for rendering the Bread modal, embedded p...47.5Val Town TypeScript SDKOfficial TypeScript and JavaScript client library for the Val Town REST API, autogenerated from the OpenAPI...47.4Looker Studio Community VisualizationsCommunity Visualizations allow developers to build and share custom JavaScript visualizations in Looker Stu...47.2Dataiku JavaScript APIJavaScript API for building custom web applications that read from Dataiku datasets within DSS.46.6Sandpack Embed ToolkitSandpack is an open-source component toolkit for creating live-running code editing experiences powered by ...46.5Survicate JavaScript SDKThe Survicate JavaScript SDK enables web-based feedback collection on websites and web applications. It pro...46.5SAP HANA XS Engine APIExtended Application Services (XS) for building applications directly on SAP HANA.46.3Refinitiv Data Platform LibrariesSuite of ease-of-use libraries and interfaces for Python, TypeScript and JavaScript providing access to str...46.2clob-client (TypeScript SDK)Official TypeScript / JavaScript SDK for the Polymarket CLOB API - typed clients, wallet integration (viem)...46.0Qlik Embedding APIJavaScript API for embedding Qlik Sense visualizations and mashups into web applications.45.4Trieve TypeScript SDKOfficial TypeScript / JavaScript client library for the Trieve REST API.45.3WordPress Block Editor APIThe Block Editor API (Gutenberg) enables developers to create custom blocks, block patterns, block template...45.3Convex JavaScript SDKThe Convex JavaScript SDK is a collection of TypeScript/JavaScript packages for building applications on th...44.5Adobe Illustrator CEP Extensions APIThe Adobe Illustrator Common Extensibility Platform (CEP) allows developers to build panels and extensions ...44.3Kongregate Client JavaScript APIBrowser-side JavaScript API loaded by script tag from cdn1.kongregate.com. Exposes kongregate.services.* fo...44.1make-request-js (Sideko Runtime)Modern TypeScript HTTP client for browser and Node.js environments, used as the runtime by Sideko-generated...43.9Neo4j GraphQL LibraryThe Neo4j GraphQL Library is an open source JavaScript library that enables rapid development of GraphQL AP...43.9Neo4j JavaScript DriverThe Neo4j JavaScript Driver is the official library for interacting with Neo4j graph databases from JavaScr...43.9Sideko Node.js SDKThe Sideko Node.js SDK provides TypeScript and JavaScript bindings for the Sideko API. Generated by Sideko'...43.9Akashjs - Akash SDK (JavaScript / TypeScript)Official JavaScript / TypeScript SDK for building Akash applications and tooling - SDL parsing, wallet sign...43.7GOV.UK Notify Node.js ClientOfficial Node.js client library for the GOV.UK Notify API for sending government notifications via email, S...43.7Looker Extension Framework APIThe Looker Extension Framework provides APIs and SDKs for building custom extensions that run inside the Lo...43.7Credo APICredo (formerly Aries Framework JavaScript) is a TypeScript framework for building decentralized identity a...43.4AI21 TypeScript / JavaScript SDKOfficial TypeScript and JavaScript client for the AI21 Studio API, with typed request and response models a...43.1Ketch Web SDKTypeScript and JavaScript Web API and consent library for collecting, storing, and enforcing consent in bro...42.7Commercetools TypeScript SDKThe commercetools TypeScript SDK is the official client library for interacting with the Composable Commerc...42.6Safe API Kit (TypeScript SDK)Official TypeScript client SDK for the Safe Transaction Service API. Wraps all Transaction Service endpoint...42.6Microsoft Project JavaScript APIJavaScript API for building Office Add-ins that extend Microsoft Project desktop client. Enables reading ta...42.0Microsoft Project Online CSOM APIClient-Side Object Model API for programmatic access to Project Online and Project Server. Provides .NET, S...42.0Lightning Web Components Runtime APICore JavaScript APIs for building Lightning Web Components including decorators, wire service, and componen...41.8Glia Visitor JS SDKThe public browser SDK for embedding Glia engagements into a web property - queueing for engagement, chat, ...41.0Shopify Buy SDKThe Shopify JavaScript Buy SDK is a lightweight library that enables developers to integrate Shopify's stor...41.0Deno Runtime APIThe Deno Runtime API is the built-in namespace of globals and modules available to all programs running on ...40.8Electric TypeScript ClientThe official @electric-sql/client NPM package that wraps the HTTP Sync API with two high-level primitives: ...40.5Paidy CheckoutJavaScript-based checkout integration that enables consumers to authenticate with Paidy and authorize payme...40.1Penn SDK (JavaScript / Node)Open-source JavaScript/Node client from Penn Labs. Documentation is hosted on js.org, a community subdomain...40.1JupyterLab Extension APIJavaScript and TypeScript API used to build JupyterLab extensions and plugins. JupyterLab is composed of pl...40.0Tableau Embedding APIEmbed Tableau visualizations into web applications using modern web components with v3 of the Embedding API.39.8Tableau Extensions APIBuild dashboard extensions that enable users to interact with data from other applications directly in Tabl...39.8@spree/sdk (TypeScript Store API SDK)Official TypeScript SDK for the Spree Store API - typed clients, auth helpers, and resource methods. Distri...39.6CloudEvents JavaScript SDKThe official JavaScript SDK for CloudEvents provides libraries for producing and consuming CloudEvents in N...39.6Bunny.net Scripting / Edge Compute APIEdge-compute API for deploying and managing Bunny Edge Scripts - JavaScript/TypeScript functions that run o...39.5Excel JavaScript APIJavaScript API for building Excel add-ins and extensions.39.5saleor-sdk (TypeScript / JavaScript)Official TypeScript / JavaScript SDK wrapping the Saleor GraphQL API for storefronts and Apps - typed opera...39.5Sync Labs TypeScript SDKOfficial TypeScript/Node.js SDK for integrating the Sync Labs API. Supports Node.js 18+. Install via npm in...39.4
Thin 83 Limited public surface area
Arcjet SDKsThe primary, supported interface to Arcjet. SDKs ship for Node.js, Next.js, Bun, Deno, SvelteKit, NestJS, R...39.1QlikView JavaScript APIJavaScript API library for building websites containing QlikView content and for developing custom extensio...39.0Split JavaScript SDKThe Split JavaScript SDK provides client-side integration for feature flag evaluation in browser-based appl...39.0Split React SDKThe Split React SDK provides React-specific components and hooks for integrating feature flags including a ...39.0hCaptcha JavaScript WidgetThe hCaptcha JS widget renders the visible or invisible challenge on a page and produces a response token o...38.9Typeform Embed SDKJavaScript embed SDK for inline / popup / fullscreen / sidetab / popover / slider experiences in your own w...38.7Enterprise Architect ScriptingBuilt-in scripting engine supporting JavaScript, JScript, and VBScript for automating tasks within Enterpri...38.2TensorFlow.js APIA JavaScript library for training and deploying ML models in the browser and on Node.js.38.2Polygon ID JavaScript SDKThe JS-SDK enables browser-based applications, extensions, and dApps to implement identity wallet functiona...38.1Docling TypeScriptTypeScript/JavaScript types and helpers for consuming Docling output (DoclingDocument JSON, DocTags) in Nod...37.9Knotch Measurement Unit APIBrowser-side JavaScript API exposed by the Knotch tag for controlling Measurement Units on a page at runtim...37.8Nomic TypeScript SDKOfficial TypeScript / JavaScript client for the Nomic Atlas API.37.8Triplit Client SDKTypeScript/JavaScript client library for interacting with Triplit databases locally and remotely. Provides ...37.8Authsignal Browser SDKJavaScript / TypeScript browser SDK wrapping the Client API and WebAuthn / passkey ceremonies for web appli...36.7Braintree JavaScript Client SDKThe Braintree JavaScript Client SDK enables secure collection of payment information directly in the browse...36.7Apache CordovaApache Cordova provides a JavaScript plugin API for accessing native device capabilities (camera, GPS, file...36.2XMTP JavaScript/TypeScript SDKClient SDK for browsers and Node.js enabling applications to send and receive end-to-end encrypted messages...36.0Friendly Captcha WidgetThe Friendly Captcha widget is the JavaScript component that runs the proof-of-work puzzle in the browser a...35.9Manifold Claim WidgetsJavaScript widget library for embedding NFT minting and claim flows into any website or dApp. Served from c...35.9Visteon Phoenix SDKThe Phoenix Software Development Kit provides development tools for building automotive infotainment applic...35.6JasmineJasmine is a behavior-driven JavaScript testing framework that organizes test cases into describe/it suite ...34.9JestJest is a zero-configuration JavaScript testing framework with built-in test suite runner, mocking, coverag...34.9MochaMocha is a flexible JavaScript test suite framework supporting both synchronous and asynchronous API tests....34.9starknet.js SDKJavaScript / TypeScript SDK for Starknet — providers, accounts, contract classes, ABI parsing, transaction ...34.9Wix JavaScript SDKThe Wix JavaScript SDK provides modular npm packages for accessing Wix business solutions and site data fro...34.9AxelarJS SDKJavaScript/TypeScript SDK wrapping common cross-chain operations on the Axelar network. Key classes include...34.7BandChain.js SDKBandChain.js is a comprehensive TypeScript library for seamless interaction with BandChain and Cosmos SDK b...34.6EAS Update APIOver-the-air update delivery service that pushes JavaScript bundle fixes directly to end users without requ...34.6Turnstile Client WidgetThe Turnstile client widget renders the challenge in the browser. It is loaded via a script tag at challeng...34.6Vectary Model APIJavaScript API for programmatic control of Vectary 3D scenes embedded on websites. The VctrModelApi class (...34.4CypressCypress is a JavaScript end-to-end testing framework designed for modern web applications. Its test scripti...34.0Playwright TestPlaywright is a cross-browser end-to-end testing framework from Microsoft that supports writing test script...34.0GMX TypeScript SDKOfficial @gmx-io/sdk package shipping two clients: GmxSdk (SDK v1) for full read/write access via RPC, and ...33.9Jitsi Meet IFrame (External) APIBrowser-side JavaScript API (also called the External API) that embeds a Jitsi Meet conference into any web...33.5lib-jitsi-meet (Low-Level JavaScript API)Low-level JavaScript library for building entirely custom video conferencing experiences on top of the Jits...33.5Formant Data SDK (JavaScript / TypeScript)Browser- and Node-side JavaScript / TypeScript SDK for building custom modules, custom views, and embedded ...33.2Voyage AI TypeScript SDKOfficial TypeScript / JavaScript client for the Voyage AI REST API.32.9Apache Guacamole JavaScript Client APIJavaScript client library for embedding the Guacamole remote desktop client in web applications, with APIs ...32.8MoleculerMoleculer is a fast, modern, and powerful microservices framework for Node.js. It provides built-in service...32.6CyberConnect JavaScript SDKThe CyberConnect JavaScript SDK provides connect and disconnect (follow and unfollow) functions for writing...32.5what3words JavaScript SDKOfficial JavaScript wrapper around the what3words Public API for browser and Node.js applications.32.4WasmEdge Node.js SDKThe WasmEdge Node.js SDK allows embedding and calling WebAssembly functions from Node.js applications. It p...32.2Keynote JavaScript for Automation APIJavaScript-based automation interface for controlling Keynote on macOS using the Open Scripting Architectur...32.1Tally Embed JSJavaScript embed library exposing Tally.openPopup, Tally.closePopup, Tally.loadEmbeds and event listeners f...31.7FastifyFastify is a fast and low-overhead web framework for Node.js, designed for building high-performance APIs a...31.5Paytm JS CheckoutBrowser JavaScript checkout that renders the Paytm payment page in two steps - server-side token creation f...31.5LlamaIndex TypeScript FrameworkLlamaIndex TypeScript is the JavaScript and TypeScript implementation of the LlamaIndex framework for build...31.4YARN CLIThe Yarn command-line interface built on @yarnpkg/cli, providing commands for package installation, workspa...31.3YARN Core APIThe @yarnpkg/core programmatic JavaScript/TypeScript API that allows applications to interact with Yarn pro...31.3PlanetScale Serverless Driver for JavaScriptThe PlanetScale Serverless Driver for JavaScript is a Fetch API-compatible database driver designed for ser...31.2Comcast Firebolt SDKFirebolt is Comcast's application platform for building apps that run on TVs, set-top boxes, and other conn...30.6nostr-tools JavaScript Librarynostr-tools is the de-facto JavaScript/TypeScript library for Nostr clients and bots. It implements event c...30.5Olark JavaScript APIBrowser-side JavaScript API for controlling the Olark chat widget, including chatbox appearance and behavio...30.5PowerSync JavaScript / Web SDKClient SDK for JavaScript and browser environments using Wasm-backed SQLite. Provides a PowerSyncDatabase c...30.1Swagger ParserSwagger Parser (swagger-parser) is a JavaScript library for parsing, validating, and dereferencing OpenAPI ...30.1Vue.js Core APICore Vue.js composition and options API for building reactive user interfaces. Provides reactivity primitiv...29.8Cucumber.jsJavaScript/Node.js implementation of Cucumber for running BDD tests in Node and the browser. Distributed as...29.4Office JavaScript API for PowerPointOffice JavaScript API namespace for building PowerPoint Add-ins that read, write, and manipulate slides, sh...29.3Fauna JavaScript DriverThe Fauna JavaScript Driver is the official client SDK for interacting with Fauna from JavaScript and TypeS...29.2AutoRest TypeScript GeneratorThe AutoRest TypeScript generator (@autorest/typescript) produces TypeScript and JavaScript client librarie...29.0SitePal Avatar APISitePal is Oddcast's AI avatar platform. Speaking characters are embedded on a web page or app and controll...28.9Push Chain Core SDKJavaScript/TypeScript SDK (@pushchain/core) for the Push Chain Universal Layer 1 blockchain. Exposes PushCh...28.7JW Player JavaScript Player APIClient-side JavaScript API for controlling the JW Player embedded in web pages. Exposes methods and events ...28.6StackBlitz JavaScript SDKA lightweight (3kB gzipped) JavaScript SDK that lets developers programmatically create, open, and embed St...28.5Hotjar JavaScript SDKThe Hotjar JavaScript SDK (@hotjar/browser) is an npm package that provides a programmatic interface for in...28.3Jumio Web SDKBrowser-based client SDK that hosts the verification UI, captures documents and selfies, and streams them t...28.0TUF JavaScript ImplementationA JavaScript/TypeScript implementation of The Update Framework (TUF) for use in Node.js environments and br...28.0EasySize Fit Quiz JavaScript LibraryClient-side JavaScript library that embeds the EasySize "Fit Quiz" size-recommendation widget on a merchant...27.6Veriff Web (InContext / Hosted) SDKBrowser-based capture experience that embeds verification inside the customer's site (InContext) or runs as...27.6MeteorMeteor is an open-source JavaScript platform providing a full-stack development environment with real-time ...27.3Crawlee JavaScript SDKThe Crawlee JavaScript SDK is a Node.js/TypeScript library for building reliable web scrapers and crawlers....26.7Atomic Transact SDKThe Transact SDK is the user-facing client that drives every Atomic flow — authentication, account selectio...26.5Yarn CLIThe Yarn command-line interface — `yarn` — provides install, add, remove, up, run, exec, dlx, info, why, pa...26.5Yarn ConstraintsYarn Constraints let you declare cross-workspace rules — required fields in `package.json`, forbidden depen...26.5Yarn DLXThe yarn dlx command runs a package in an isolated temporary environment without permanently installing it....26.5Yarn PatchFirst-class dependency patching — `yarn patch ` extracts a temporary editable copy of a dependency and `yar...26.5Yarn Plug'n'PlayPlug'n'Play (PnP) is Yarn's alternative to the traditional node_modules folder. Yarn generates a single `.p...26.5Yarn Plugin APIYarn ships with a full plugin API exposed by `@yarnpkg/core`. Plugins can register commands, resolvers, fet...26.5Yarn ProtocolsYarn supports a rich set of dependency protocols beyond `npm:` semver — `git:`, `github:`, `file:`, `link:`...26.5Yarn Version (Release Workflow)Yarn provides a release-workflow primitive for monorepos. Contributors declare per-workspace version bumps ...26.5Yarn WorkspacesYarn was the first package manager built specifically around workspaces. `yarn workspace`, `yarn workspaces...26.5Yarn Zero-InstallsZero-Installs commit Yarn's package cache (`.yarn/cache`) into the repository alongside the `.pnp.cjs` file...26.5Office JavaScript API for ExcelModern JavaScript API for creating Excel add-ins and automating Excel through web technologies.26.3
Emerging 30 Early or largely undocumented
AxiosAxios is a promise-based HTTP client for the browser and Node.js with automatic JSON data transformation an...26.0CodePen Embed APIClient-side JavaScript API for rendering and lazy-loading embedded Pens on external web pages. Uses the glo...25.8CodePen Prefill Embeds APIDeclarative embed API that transforms existing code blocks on a web page into live, interactive CodePen san...25.8Three.js CoreThe Three.js core library provides the scene graph, cameras, lights, geometries, materials, textures, loade...25.7AgentOps TypeScript SDKAgentOps' TypeScript SDK provides instrumentation for the OpenAI Agents SDK in Node.js applications, surfac...24.2Handlebars.jsHandlebars provides the power necessary to let you build semantic templates effectively with no frustration...23.9YeomanYeoman is a scaffolding tool for modern webapps and APIs. Generators provide templates for REST APIs, Expre...23.9Excel JavaScript APIJavaScript API for building Excel add-ins and extending Excel functionality in web and desktop environments...23.6Phantom Browser SDKFramework-agnostic Browser SDK for integrating Phantom into vanilla JavaScript or TypeScript web apps. Wrap...23.4Rocket Pool Protocol API (rocketpool-js)The rocketpool-js library is a TypeScript/JavaScript client for the Rocket Pool protocol's deployed smart c...23.0GraphQL Request GraphQL APIMinimal, type-safe GraphQL client API supporting HTTP and in-memory transports, custom scalars, file upload...22.7CucumberCucumber is the world's most popular BDD framework, supporting Java, JavaScript, Ruby, Python, and C#. It u...22.5SuperTestSuperTest is a Node.js library for testing HTTP servers by providing a high-level abstraction for HTTP asse...22.1Patronus TypeScript SDKThe Patronus TypeScript SDK brings the same evaluation, tracing, and experiment workflows to Node.js and br...22.0VitePress Runtime APIThe VitePress Runtime API provides Vue composition functions and helper utilities for use in custom themes,...20.5Ronin Injected Provider APIBrowser JavaScript injected provider exposed by Ronin Wallet - lets dApps detect the wallet, request accoun...20.4SenecaSeneca is a microservices toolkit for Node.js that uses a pattern-matching approach to message handling. It...20.3Arc BoostsUser-authored CSS and JavaScript overlays that customize the look and behavior of any website inside Arc. A...18.0Balancer SOR SDKClient-side TypeScript / Solidity SDK for the Balancer Smart Order Router; constructs swap routes against c...17.4Node.jsNode.js is a JavaScript runtime built on Chrome's V8 engine that powers server-side applications and toolin...17.2Hapihapi is a rich, configuration-centric framework for building web applications and APIs in Node.js. It provi...17.0Qlik Nebula.jsModern framework for building visualization mashups with Qlik's next-generation APIs.16.8Qlik Sense Capability APIsJavaScript APIs for building mashups and custom visualizations in Qlik Sense.16.8AngularJS Core APIThe AngularJS (Angular.js, version 1.x) core framework API for building dynamic single-page web application...16.7connect-es (Connect for ECMAScript)Connect for ECMAScript provides type-safe browser and Node.js clients and Node.js servers from Protobuf sch...16.7Spline Code API for WebClient SDK for embedding and interacting with Spline scenes from JavaScript.16.3Mirage JSMirage JS is a JavaScript library for mocking APIs. It enables frontend developers to build complete featur...15.1jQuery CDNContent Delivery Network endpoints for serving jQuery and related plugin library files (jQuery, jQuery UI, ...14.6jQuery Core APIThe core jQuery API for DOM manipulation, event handling, AJAX, effects, animation, and other JavaScript ut...14.6easyJet Brand Widget Service (easyDom)easyJet's hosted client-side widget platform for partner and white-label sites. Each widget is a script tag...14.2

Companies reaching this through an API (172)

These companies publish an API, specification or operation carrying “JavaScript” 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.

Adobe Creative Cloud Adobe Illustrator Adobe Photoshop AgentOps AI21 Labs Akash Network Alliance Data Systems (Bread Financial Holdings) Allo-Media Amazon Connect Apache Guacamole Apollo GraphQL Apple Apple CloudKit Apple Keynote Apple Safari Arc (The Browser Company) Arcjet Atomic Authsignal AutoRest Axelar Balancer Band Protocol BDD (Behavior-Driven Development) Braintree Bunny.net Clerk Clerk.io CloudEvents Cloudflare Turnstile CodePen CodeSandbox Comcast commercetools Connect-RPC Convex CSG Systems Cucumber CustomerOS CyberConnect Dataiku Didomi Digioh Docling easyJet ElectricSQL ESRI ArcGIS Expo Fasten Health Fauna
Show all 172 companies ↓

Score breakdown

Frequency
66.1
log-scaled weighted occurrences
Breadth
1.8
spread across providers
Quality lift
31.3
mean composite of providers using it
Cohesion
28.1
strength of nearest seed neighbor

Related tags

TypeScript 77 co-occurrences Node.js 39 co-occurrences SDK 110 co-occurrences Python 51 co-occurrences iOS 32 co-occurrences Frontend 28 co-occurrences Android 29 co-occurrences Web 24 co-occurrences

Where this tag comes from

Api tag235
Provider tag64

Cohort brief

Auto-generated

The 62 providers in the APIs.io catalog tagged JavaScript, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
62
all scored
Mean Kin Score
27.6
+3.7 vs catalog 23.9
Mean Agent Readiness
8
-4 vs catalog 12
Spread
8.8–66.1
median 25.5 · σ 12.7
How the 62 split by band
Exemplar 0Strong 2Developing 10Thin 17Emerging 30Minimal 3
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Operational Transparency 26.7 14 +12.7 62
Developer Ergonomics 33.9 23.4 +10.5 62
Discoverability 64 61.2 +2.8 62
Contract Governance 7.4 6.4 +1 62
Access Clarity 24.6 26.5 -1.9 62
Contract Quality 17.4 19.8 -2.4 62

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) 6% 10% -4
MCP server (first-party) 9% 13% -4
Agent Skills 0% 0% 0
OAuth scopes 2% 11% -9
Security 92% 97% -5
Arazzo workflows 2% 2% 0
Governance rules 33% 14% +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 BrowserStack 66.1
  2. 2 Freestyle 60.3
  3. 3 Chroma 49.3
  4. 4 npm 49.3
  5. 5 Val Town 47.4
  6. 6 vlt 45.2
  7. 7 Plotly 44.7
  8. 8 TypeScript 44.4
  9. 9 Lightning Web Components 41.8
  10. 10 Codehooks 41.7
Top by Agent Readiness
  1. 1 BrowserStack 44.1
  2. 2 Chroma 34.2
  3. 3 Freestyle 29.8
  4. 4 Plotly 28.4
  5. 5 TensorFlow 26.8
  6. 6 npm 26.6
  7. 7 Val Town 22.3
  8. 8 Deno 21.5
  9. 9 Mastra 21
  10. 10 Codehooks 20.9
All 64 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.

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/javascript"
All tags
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort
curl "https://apis.io/api/v1/cohorts/tag/javascript"
The distribution (Pro)
curl "https://apis.io/api/v1/cohorts/tag/javascript/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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

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