JavaScript
Providers using this tag (57)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 1 Complete, well-documented, and agent-ready
Strong 1 Solid coverage with minor gaps
Developing 8 Usable, with meaningful gaps to close
Thin 16 Limited public surface area
Emerging 27 Early or largely undocumented
Minimal 4 Almost no public developer surface
APIs with this tag (225)
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 17 Complete, well-documented, and agent-ready
Salesforce Aura ComponentsSalesforce Aura Components is the legacy JavaScript component framework for building dynamic web applicatio...Salesforce Lightning Web Components (LWC)Lightning Web Components (LWC) is Salesforce's standards-based JavaScript framework for building UI compone...Didomi Web SDKThe Didomi Web SDK is the browser-side library that renders consent notices, preference centers, and privac...RudderStack Transformations APIThe RudderStack Transformations API manages user-defined transformation functions (JavaScript, with Python ...Google Ads ScriptsJavaScript-based scripting interface for programmatically managing and querying Google Ads data directly in...New Relic Browser APIThe New Relic Browser API provides JavaScript methods for extending and customizing browser monitoring data...Qlik Embedding APIJavaScript API for embedding Qlik Sense visualizations and mashups into web applications.dotCMS Java Script APIJavaScript execution and server-side scriptingClerk JavaScript SDKOfficial ClerkJS browser library and monorepo of framework adapters (Next.js, React, Expo, React Router, As...HERE Maps API for JavaScriptBrowser SDK for embedding interactive maps, routing, search, and traffic visualizations in web applications.ArcGIS Maps SDK for JavaScriptThe ArcGIS Maps SDK for JavaScript enables web developers to build compelling 2D and 3D mapping application...Oracle Siebel Open UI JavaScript APIClient-side JavaScript API for customizing the Siebel Open UI user interface. The API provides well-defined...Merchant Sample (JavaScript)Simple JavaScript merchant checkout example for Token.io.Token.io JavaScript SDKOfficial Token.io JavaScript SDK for Node.js and browser environments interacting with the Token System and...Iterable React Native SDKThe Iterable React Native SDK enables developers to integrate Iterable's marketing automation capabilities ...Iterable Web SDKThe Iterable Web SDK enables developers to integrate Iterable's marketing automation capabilities directly ...BrowserStack JavaScript Testing APIThe BrowserStack JavaScript Testing API provides HTTPS-based access to run JavaScript unit tests across 300...
Strong 26 Solid coverage with minor gaps
CloudKit JSCloudKit JS is Apple's JavaScript SDK that wraps the CloudKit Web Services REST API for browser apps. It pr...Moov.jsMoov.js is a client-side JavaScript SDK designed to streamline interactions with the Moov API while keeping...Medusa JS SDK (@medusajs/js-sdk)Official TypeScript / JavaScript SDK wrapping the Store and Admin REST APIs - typed clients, auth helpers, ...Red5 Pro WebRTC SDKThe Red5 Pro WebRTC SDK is a JavaScript library for integrating low-latency live streaming publish and subs...Koala Web Pixel (JavaScript SDK)The client-side pixel loaded from cdn.getkoala.com/v1/{key}/sdk.js. Exposes ko.identify(), ko.track(), ko.q...Playable Campaign SDKBrowser-side JavaScript SDK (`@playable-marketing/campaign-sdk`) that exposes a promise-based `window.sdk` ...Node.js Driver for SQL ServerNode.js driver (tedious/mssql) for connecting JavaScript and TypeScript applications to SQL Server and Azur...Node.js Driver for SQL Server (tedious)Open-source JavaScript implementation of the TDS protocol for connecting to SQL Server from Node.js on Wind...Word JavaScript APIJavaScript API for building Word add-ins and interacting with Word document content.Raygun Source Maps APIUpload, list, retrieve, update, and delete JavaScript source maps for symbolicating minified front-end stac...Neo4j GraphQL LibraryThe Neo4j GraphQL Library is an open source JavaScript library that enables rapid development of GraphQL AP...Neo4j JavaScript DriverThe Neo4j JavaScript Driver is the official library for interacting with Neo4j graph databases from JavaScr...Apple Pay on the Web APIJavaScript APIs for implementing Apple Pay payments in Safari, supporting both the Apple Pay JS API and the...Safari Web Content APIWebKit APIs for interacting with web content, including JavaScript evaluation and DOM manipulation.RB2B Pixel and Destination WebhooksThe RB2B JavaScript pixel installed in a site header (or via Google Tag Manager / Segment / RudderStack / S...Clerk.js Client LibraryClerk.js is the browser-side JavaScript library for embedding Clerk.io recommendation slots, search, and em...Redox HL7 v2 Libraryredox-hl7-v2 is Redox's open-source JavaScript library for parsing and generating HL7 v2 messages, useful f...Sketchfab Viewer APIClient-side JavaScript library for controlling an embedded Sketchfab 3D viewer. Exposes camera control, scr...Fasten Connect Quickstart SampleMIT-licensed JavaScript starter project that demonstrates an end-to-end Fasten Connect integration — creden...Digioh JavaScript APIClient-side browser API exposed by the Digioh widget runtime once the Digioh JavaScript tag is installed on...Model-Driven Apps Client APIClient API reference for model-driven apps providing JavaScript libraries for form scripting, UI manipulati...Amazon Connect Streams SDKAmazon Connect Streams is a browser-based integration API and JavaScript SDK that enables embedding and con...MapKit JSEmbed interactive Apple Maps on websites.CustomerOS Website TrackerClient-side JavaScript tracker that captures page views and custom events, exposes window.cos.identify() fo...Office Add-ins APIJavaScript API for building add-ins for Word, Excel, PowerPoint, and Outlook.Osano CMP JavaScript APIBrowser-side JavaScript API for the Osano Consent Management Platform, loaded from cmp.osano.com. Exposes f...
Developing 69 Usable, with meaningful gaps to close
Adobe Express Embed SDKA JavaScript SDK for embedding Adobe Express creative editing tools directly into web applications. The SDK...Adobe UXP (Unified Extensibility Platform)The Unified Extensibility Platform (UXP) is Adobe's modern cross-app plugin development framework replacing...Dataiku JavaScript APIJavaScript API for building custom web applications that read from Dataiku datasets within DSS.Adobe Photoshop UXP Plugin APIThe modern plugin development platform for Photoshop, replacing the legacy CEP framework. UXP (Unified Exte...Adobe Photoshop UXP ScriptingA modern scripting system for Photoshop that allows developers to execute standalone JavaScript files with ...Truework.js (Truework Direct)Truework.js is the client-side JavaScript library that powers Truework Direct, the borrower-driven (consume...OptinMonster JavaScript Events APIA client-side event API exposed by the OptinMonster embed script (served from a.omappapi.com/app/js/api.min...SAP Analytics Cloud Analytics Designer APIJavaScript-based API for building interactive analytic applications in SAP Analytics Cloud Analytics Design...SAP Lumira Discovery Extensions APIJavaScript API for creating custom visualizations and extensions in SAP Lumira.Excel JavaScript APIOffice Add-ins API for building custom functionality within Excel using JavaScript and TypeScript.Runway Node.js SDKThe Runway Node.js SDK provides a JavaScript and TypeScript library for integrating with the Runway API. Su...SharePoint CSOM (Client-Side Object Model)Client-side object model for SharePoint that provides access to SharePoint objects through .NET managed or ...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...Luciq React Native SDK (formerly Instabug-React-Native)React Native plugin wrapping the native iOS and Android Luciq SDKs. Adds Expo integration, CodePush / Over-...Allo-Media Hermes Call TrackingFirst-party browser JavaScript that performs dynamic number insertion so an inbound phone call can be attri...Neon Serverless DriverThe Neon Serverless Driver is a low-latency JavaScript and TypeScript driver that enables querying Neon Pos...Tableau Embedding APIJavaScript API for embedding Tableau visualizations in web applications with advanced interaction capabilit...Tableau Extensions APIThe Tableau Extensions API allows developers to create dashboard extensions and viz extensions that users c...Tableau Web Data ConnectorThe Tableau Web Data Connector (WDC) provides an SDK for building connectors to any data accessible over HT...Visio JavaScript APIJavaScript API for building add-ins and extending Visio functionality in the browser with access to documen...Apollo Client (Web)Apollo Client is a comprehensive state management library for JavaScript and TypeScript applications. It is...Apollo ServerApollo Server is an open-source, spec-compliant GraphQL server compatible with any GraphQL client. It is th...CSG Forte.jsForte.js is a JavaScript library for secure browser-based payment tokenization. It enables web applications...WeChat Mini Programs Client APIClient-side JavaScript API exposed inside the WeChat runtime to Mini Programs and Mini Games. Covers networ...Gemini Node.js SDKNode.js client library for the Gemini API.Felt JavaScript SDKJavaScript SDK for embedding, controlling, and extending Felt maps in external web applications. Supports t...Livepeer JavaScript/TypeScript SDKOfficial TypeScript/JavaScript SDK (@livepeer/ai or livepeer) for the Livepeer Studio REST API and AI endpo...npm CLIThe npm CLI is the official command-line interface for the npm package manager, providing developers with t...npm Registry APIThe npm Registry API provides programmatic access to the npm package registry, the largest software registr...Looker Extension Framework APIThe Looker Extension Framework provides APIs and SDKs for building custom extensions that run inside the Lo...App Studio Web SDKWeb SDK for building custom applications using HTML5 and JavaScript within the Eikon App Studio environment...Refinitiv Data Library for TypeScriptTypeScript and JavaScript library providing ease-of-use interfaces for accessing financial data and service...turbopuffer TypeScript SDKOfficial TypeScript / JavaScript client library for the turbopuffer REST API, Stainless-generated and publi...Looker Studio Community VisualizationsCommunity Visualizations allow developers to build and share custom JavaScript visualizations in Looker Stu...Chroma JavaScript ClientThe Chroma JavaScript and TypeScript Client is a first-party SDK for interacting with Chroma from JavaScrip...LanceDB TypeScript SDKNode.js / TypeScript / JavaScript client library for LanceDB OSS, Cloud, and Enterprise. Bundles native bin...Tidio Widget SDKJavaScript SDK for embedding and customizing the Tidio chat widget on websites. Supports user tracking, cus...Akashjs - Akash SDK (JavaScript / TypeScript)Official JavaScript / TypeScript SDK for building Akash applications and tooling - SDL parsing, wallet sign...Val Town TypeScript SDKOfficial TypeScript and JavaScript client library for the Val Town REST API, autogenerated from the OpenAPI...WordPress Block Editor APIThe Block Editor API (Gutenberg) enables developers to create custom blocks, block patterns, block template...Pyramid Embed APIA client-side JavaScript API (PyramidEmbedClient) for embedding Pyramid content — hubs, discoveries, presen...Shift4 JavaScript LibraryThe Shift4 JavaScript library provides secure, customizable HTML/CSS components for building on-page paymen...true[X] JavaScript Ad APIClient-side JavaScript integration for publishers embedding true[X] engagement ads on the web. Loads truex....Refinitiv Data Platform LibrariesSuite of ease-of-use libraries and interfaces for Python, TypeScript and JavaScript providing access to str...Convex JavaScript SDKThe Convex JavaScript SDK is a collection of TypeScript/JavaScript packages for building applications on th...Microsoft Project JavaScript APIJavaScript API for building Office Add-ins that extend Microsoft Project desktop client. Enables reading ta...Microsoft Project Online CSOM APIClient-Side Object Model API for programmatic access to Project Online and Project Server. Provides .NET, S...Adobe Illustrator CEP Extensions APIThe Adobe Illustrator Common Extensibility Platform (CEP) allows developers to build panels and extensions ...Survicate JavaScript SDKThe Survicate JavaScript SDK enables web-based feedback collection on websites and web applications. It pro...SAP HANA XS Engine APIExtended Application Services (XS) for building applications directly on SAP HANA.Heidi Widget SDKEmbeddable JavaScript widget for dropping Heidi's ambient documentation experience directly into a web-base...clob-client (TypeScript SDK)Official TypeScript / JavaScript SDK for the Polymarket CLOB API - typed clients, wallet integration (viem)...Bread JavaScript SDKBrowser-side JavaScript SDK that exposes the BreadPayments object for rendering the Bread modal, embedded p...Trieve TypeScript SDKOfficial TypeScript / JavaScript client library for the Trieve REST API.Kongregate Client JavaScript APIBrowser-side JavaScript API loaded by script tag from cdn1.kongregate.com. Exposes kongregate.services.* fo...Sandpack Embed ToolkitSandpack is an open-source component toolkit for creating live-running code editing experiences powered by ...Credo APICredo (formerly Aries Framework JavaScript) is a TypeScript framework for building decentralized identity a...make-request-js (Sideko Runtime)Modern TypeScript HTTP client for browser and Node.js environments, used as the runtime by Sideko-generated...Sideko Node.js SDKThe Sideko Node.js SDK provides TypeScript and JavaScript bindings for the Sideko API. Generated by Sideko'...Commercetools TypeScript SDKThe commercetools TypeScript SDK is the official client library for interacting with the Composable Commerc...QlikView JavaScript APIJavaScript API library for building websites containing QlikView content and for developing custom extensio...Excel JavaScript APIJavaScript API for building Excel add-ins and extensions.AI21 TypeScript / JavaScript SDKOfficial TypeScript and JavaScript client for the AI21 Studio API, with typed request and response models a...Safe API Kit (TypeScript SDK)Official TypeScript client SDK for the Safe Transaction Service API. Wraps all Transaction Service endpoint...GOV.UK Notify Node.js ClientOfficial Node.js client library for the GOV.UK Notify API for sending government notifications via email, S...Deno Runtime APIThe Deno Runtime API is the built-in namespace of globals and modules available to all programs running on ...Glia Visitor JS SDKThe public browser SDK for embedding Glia engagements into a web property - queueing for engagement, chat, ...JupyterLab Extension APIJavaScript and TypeScript API used to build JupyterLab extensions and plugins. JupyterLab is composed of pl...Ketch Web SDKTypeScript and JavaScript Web API and consent library for collecting, storing, and enforcing consent in bro...
Thin 73 Limited public surface area
Shopify Buy SDKThe Shopify JavaScript Buy SDK is a lightweight library that enables developers to integrate Shopify's stor...Enterprise Architect ScriptingBuilt-in scripting engine supporting JavaScript, JScript, and VBScript for automating tasks within Enterpri...Tableau Embedding APIEmbed Tableau visualizations into web applications using modern web components with v3 of the Embedding API.Tableau Extensions APIBuild dashboard extensions that enable users to interact with data from other applications directly in Tabl...Bunny.net Scripting / Edge Compute APIEdge-compute API for deploying and managing Bunny Edge Scripts - JavaScript/TypeScript functions that run o...Lightning Web Components Runtime APICore JavaScript APIs for building Lightning Web Components including decorators, wire service, and componen...Braintree JavaScript Client SDKThe Braintree JavaScript Client SDK enables secure collection of payment information directly in the browse...Docling TypeScriptTypeScript/JavaScript types and helpers for consuming Docling output (DoclingDocument JSON, DocTags) in Nod...Split JavaScript SDKThe Split JavaScript SDK provides client-side integration for feature flag evaluation in browser-based appl...Split React SDKThe Split React SDK provides React-specific components and hooks for integrating feature flags including a ...Sync Labs TypeScript SDKOfficial TypeScript/Node.js SDK for integrating the Sync Labs API. Supports Node.js 18+. Install via npm in...@spree/sdk (TypeScript Store API SDK)Official TypeScript SDK for the Spree Store API - typed clients, auth helpers, and resource methods. Distri...Electric TypeScript ClientThe official @electric-sql/client NPM package that wraps the HTTP Sync API with two high-level primitives: ...Paidy CheckoutJavaScript-based checkout integration that enables consumers to authenticate with Paidy and authorize payme...CloudEvents JavaScript SDKThe official JavaScript SDK for CloudEvents provides libraries for producing and consuming CloudEvents in N...Typeform Embed SDKJavaScript embed SDK for inline / popup / fullscreen / sidetab / popover / slider experiences in your own w...Arcjet SDKsThe primary, supported interface to Arcjet. SDKs ship for Node.js, Next.js, Bun, Deno, SvelteKit, NestJS, R...Penn SDK (JavaScript / Node)Open-source JavaScript/Node client from Penn Labs. Documentation is hosted on js.org, a community subdomain...saleor-sdk (TypeScript / JavaScript)Official TypeScript / JavaScript SDK wrapping the Saleor GraphQL API for storefronts and Apps - typed opera...hCaptcha JavaScript WidgetThe hCaptcha JS widget renders the visible or invisible challenge on a page and produces a response token o...TensorFlow.js APIA JavaScript library for training and deploying ML models in the browser and on Node.js.Vectary Model APIJavaScript API for programmatic control of Vectary 3D scenes embedded on websites. The VctrModelApi class (...Nomic TypeScript SDKOfficial TypeScript / JavaScript client for the Nomic Atlas API.AutoRest TypeScript GeneratorThe AutoRest TypeScript generator (@autorest/typescript) produces TypeScript and JavaScript client librarie...Triplit Client SDKTypeScript/JavaScript client library for interacting with Triplit databases locally and remotely. Provides ...Apache CordovaApache Cordova provides a JavaScript plugin API for accessing native device capabilities (camera, GPS, file...Wix JavaScript SDKThe Wix JavaScript SDK provides modular npm packages for accessing Wix business solutions and site data fro...EAS Update APIOver-the-air update delivery service that pushes JavaScript bundle fixes directly to end users without requ...Knotch Measurement Unit APIBrowser-side JavaScript API exposed by the Knotch tag for controlling Measurement Units on a page at runtim...Polygon ID JavaScript SDKThe JS-SDK enables browser-based applications, extensions, and dApps to implement identity wallet functiona...XMTP JavaScript/TypeScript SDKClient SDK for browsers and Node.js enabling applications to send and receive end-to-end encrypted messages...Authsignal Browser SDKJavaScript / TypeScript browser SDK wrapping the Client API and WebAuthn / passkey ceremonies for web appli...Visteon Phoenix SDKThe Phoenix Software Development Kit provides development tools for building automotive infotainment applic...Comcast Firebolt SDKFirebolt is Comcast's application platform for building apps that run on TVs, set-top boxes, and other conn...Jitsi Meet IFrame (External) APIBrowser-side JavaScript API (also called the External API) that embeds a Jitsi Meet conference into any web...lib-jitsi-meet (Low-Level JavaScript API)Low-level JavaScript library for building entirely custom video conferencing experiences on top of the Jits...GMX TypeScript SDKOfficial @gmx-io/sdk package shipping two clients: GmxSdk (SDK v1) for full read/write access via RPC, and ...Keynote JavaScript for Automation APIJavaScript-based automation interface for controlling Keynote on macOS using the Open Scripting Architectur...Friendly Captcha WidgetThe Friendly Captcha widget is the JavaScript component that runs the proof-of-work puzzle in the browser a...Apache Guacamole JavaScript Client APIJavaScript client library for embedding the Guacamole remote desktop client in web applications, with APIs ...Manifold Claim WidgetsJavaScript widget library for embedding NFT minting and claim flows into any website or dApp. Served from c...BandChain.js SDKBandChain.js is a comprehensive TypeScript library for seamless interaction with BandChain and Cosmos SDK b...starknet.js SDKJavaScript / TypeScript SDK for Starknet — providers, accounts, contract classes, ABI parsing, transaction ...Turnstile Client WidgetThe Turnstile client widget renders the challenge in the browser. It is loaded via a script tag at challeng...Formant Data SDK (JavaScript / TypeScript)Browser- and Node-side JavaScript / TypeScript SDK for building custom modules, custom views, and embedded ...Office JavaScript API for PowerPointOffice JavaScript API namespace for building PowerPoint Add-ins that read, write, and manipulate slides, sh...WasmEdge Node.js SDKThe WasmEdge Node.js SDK allows embedding and calling WebAssembly functions from Node.js applications. It p...MoleculerMoleculer is a fast, modern, and powerful microservices framework for Node.js. It provides built-in service...LlamaIndex TypeScript FrameworkLlamaIndex TypeScript is the JavaScript and TypeScript implementation of the LlamaIndex framework for build...AxelarJS SDKJavaScript/TypeScript SDK wrapping common cross-chain operations on the Axelar network. Key classes include...CyberConnect JavaScript SDKThe CyberConnect JavaScript SDK provides connect and disconnect (follow and unfollow) functions for writing...Paytm JS CheckoutBrowser JavaScript checkout that renders the Paytm payment page in two steps - server-side token creation f...PlanetScale Serverless Driver for JavaScriptThe PlanetScale Serverless Driver for JavaScript is a Fetch API-compatible database driver designed for ser...Tally Embed JSJavaScript embed library exposing Tally.openPopup, Tally.closePopup, Tally.loadEmbeds and event listeners f...what3words JavaScript SDKOfficial JavaScript wrapper around the what3words Public API for browser and Node.js applications.FastifyFastify is a fast and low-overhead web framework for Node.js, designed for building high-performance APIs a...Voyage AI TypeScript SDKOfficial TypeScript / JavaScript client for the Voyage AI REST API.Vue.js Core APICore Vue.js composition and options API for building reactive user interfaces. Provides reactivity primitiv...Olark JavaScript APIBrowser-side JavaScript API for controlling the Olark chat widget, including chatbox appearance and behavio...Push Chain Core SDKJavaScript/TypeScript SDK (@pushchain/core) for the Push Chain Universal Layer 1 blockchain. Exposes PushCh...JW Player JavaScript Player APIClient-side JavaScript API for controlling the JW Player embedded in web pages. Exposes methods and events ...Cucumber.jsJavaScript/Node.js implementation of Cucumber for running BDD tests in Node and the browser. Distributed as...Crawlee JavaScript SDKThe Crawlee JavaScript SDK is a Node.js/TypeScript library for building reliable web scrapers and crawlers....PowerSync JavaScript / Web SDKClient SDK for JavaScript and browser environments using Wasm-backed SQLite. Provides a PowerSyncDatabase c...Hotjar JavaScript SDKThe Hotjar JavaScript SDK (@hotjar/browser) is an npm package that provides a programmatic interface for in...nostr-tools JavaScript Librarynostr-tools is the de-facto JavaScript/TypeScript library for Nostr clients and bots. It implements event c...Office JavaScript API for ExcelModern JavaScript API for creating Excel add-ins and automating Excel through web technologies.SitePal Avatar APISitePal is Oddcast's AI avatar platform. Speaking characters are embedded on a web page or app and controll...EasySize Fit Quiz JavaScript LibraryClient-side JavaScript library that embeds the EasySize "Fit Quiz" size-recommendation widget on a merchant...Veriff Web (InContext / Hosted) SDKBrowser-based capture experience that embeds verification inside the customer's site (InContext) or runs as...StackBlitz JavaScript SDKA lightweight (3kB gzipped) JavaScript SDK that lets developers programmatically create, open, and embed St...TUF JavaScript ImplementationA JavaScript/TypeScript implementation of The Update Framework (TUF) for use in Node.js environments and br...Jumio Web SDKBrowser-based client SDK that hosts the verification UI, captures documents and selfies, and streams them t...
Emerging 39 Early or largely undocumented
AgentOps TypeScript SDKAgentOps' TypeScript SDK provides instrumentation for the OpenAI Agents SDK in Node.js applications, surfac...MeteorMeteor is an open-source JavaScript platform providing a full-stack development environment with real-time ...Yarn CLIThe Yarn command-line interface — `yarn` — provides install, add, remove, up, run, exec, dlx, info, why, pa...Yarn ConstraintsYarn Constraints let you declare cross-workspace rules — required fields in `package.json`, forbidden depen...Yarn DLXThe yarn dlx command runs a package in an isolated temporary environment without permanently installing it....Yarn PatchFirst-class dependency patching — `yarn patch ` extracts a temporary editable copy of a dependency and `yar...Yarn Plug'n'PlayPlug'n'Play (PnP) is Yarn's alternative to the traditional node_modules folder. Yarn generates a single `.p...Yarn Plugin APIYarn ships with a full plugin API exposed by `@yarnpkg/core`. Plugins can register commands, resolvers, fet...Yarn ProtocolsYarn supports a rich set of dependency protocols beyond `npm:` semver — `git:`, `github:`, `file:`, `link:`...Yarn Version (Release Workflow)Yarn provides a release-workflow primitive for monorepos. Contributors declare per-workspace version bumps ...Yarn WorkspacesYarn was the first package manager built specifically around workspaces. `yarn workspace`, `yarn workspaces...Yarn Zero-InstallsZero-Installs commit Yarn's package cache (`.yarn/cache`) into the repository alongside the `.pnp.cjs` file...AxiosAxios is a promise-based HTTP client for the browser and Node.js with automatic JSON data transformation an...CodePen Embed APIClient-side JavaScript API for rendering and lazy-loading embedded Pens on external web pages. Uses the glo...CodePen Prefill Embeds APIDeclarative embed API that transforms existing code blocks on a web page into live, interactive CodePen san...Three.js CoreThe Three.js core library provides the scene graph, cameras, lights, geometries, materials, textures, loade...Phantom Browser SDKFramework-agnostic Browser SDK for integrating Phantom into vanilla JavaScript or TypeScript web apps. Wrap...SuperTestSuperTest is a Node.js library for testing HTTP servers by providing a high-level abstraction for HTTP asse...Excel JavaScript APIJavaScript API for building Excel add-ins and extending Excel functionality in web and desktop environments...Patronus TypeScript SDKThe Patronus TypeScript SDK brings the same evaluation, tracing, and experiment workflows to Node.js and br...GraphQL Request GraphQL APIMinimal, type-safe GraphQL client API supporting HTTP and in-memory transports, custom scalars, file upload...Rocket Pool Protocol API (rocketpool-js)The rocketpool-js library is a TypeScript/JavaScript client for the Rocket Pool protocol's deployed smart c...Atomic Transact SDKThe Transact SDK is the user-facing client that drives every Atomic flow — authentication, account selectio...SenecaSeneca is a microservices toolkit for Node.js that uses a pattern-matching approach to message handling. It...VitePress Runtime APIThe VitePress Runtime API provides Vue composition functions and helper utilities for use in custom themes,...Ronin Injected Provider APIBrowser JavaScript injected provider exposed by Ronin Wallet - lets dApps detect the wallet, request accoun...Node.jsNode.js is a JavaScript runtime built on Chrome's V8 engine that powers server-side applications and toolin...Arc BoostsUser-authored CSS and JavaScript overlays that customize the look and behavior of any website inside Arc. A...Spline Code API for WebClient SDK for embedding and interacting with Spline scenes from JavaScript.Qlik Nebula.jsModern framework for building visualization mashups with Qlik's next-generation APIs.Qlik Sense Capability APIsJavaScript APIs for building mashups and custom visualizations in Qlik Sense.Balancer SOR SDKClient-side TypeScript / Solidity SDK for the Balancer Smart Order Router; constructs swap routes against c...AngularJS Core APIThe AngularJS (Angular.js, version 1.x) core framework API for building dynamic single-page web application...connect-es (Connect for ECMAScript)Connect for ECMAScript provides type-safe browser and Node.js clients and Node.js servers from Protobuf sch...Hapihapi is a rich, configuration-centric framework for building web applications and APIs in Node.js. It provi...jQuery CDNContent Delivery Network endpoints for serving jQuery and related plugin library files (jQuery, jQuery UI, ...jQuery Core APIThe core jQuery API for DOM manipulation, event handling, AJAX, effects, animation, and other JavaScript ut...easyJet Brand Widget Service (easyDom)easyJet's hosted client-side widget platform for partner and white-label sites. Each widget is a script tag...Mirage JSMirage JS is a JavaScript library for mocking APIs. It enables frontend developers to build complete featur...
Minimal 1 Almost no public developer surface
Companies reaching this through an API (169)
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
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
dotCMS
easyJet
ElectricSQL
Esri
Expo
Fasten Health
Fauna
Show all 169 companies ↓
Felt
Formant
Friendly Captcha
Gemini
Glia
GMX
Google Ads
Google Data Studio
GOV.UK Notify
hCaptcha
Heidi Health
HERE
Hotjar
Instabug (Luciq)
Iterable
Jitsi
Jumio
JupyterLab
JW Player
Ketch
Knotch
Koala
Kongregate
LanceDB
Livepeer
Llamaindex
Looker
Manifold
Medusa
Microsoft Excel
Microsoft Excel (Advanced)
Microsoft Excel Macros
Microsoft Office
Microsoft Power Apps
Microsoft PowerPoint
Microsoft Project
Microsoft SharePoint
Microsoft SQL Server
Microsoft Visio API
Microsoft Word
Moov
Neo4j
Neon
New Relic
Nomic AI
Nostr
Oddcast
Olark
OpenWallet Foundation
OptinMonster
Oracle Siebel
Osano
Paidy
Patronus AI
Paytm
Phantom
Planetscale
Playable
Polygon ID
Polymarket
PowerSync
Push Protocol
Pyramid Analytics
Qlik Mashups
Qlik Sense
QlikView
Raygun
RB2B
Red5
Redox
Refinitiv
Refinitiv Eikon
Rocket Pool
Ronin Network
RudderStack
Runway
Safe (Gnosis Safe)
Sailthru
Saleor
Salesforce
SAP BI Tools
SAP HANA
Shift4 Payments
Shopify Storefront API
Sideko
Sketchfab
Sparx Enterprise Architect
Spline
Split
Spree Commerce
StackBlitz
Starknet
Survicate
Swagger
Sync Labs
Tableau
Tableau Desktop
Tally
The Update Framework (TUF)
Tidio
Token.io
Trieve
Triplit
Truework
Truex Media
turbopuffer
Typeform
University of Pennsylvania
Vectary
Veriff
Visteon
VitePress
Voyage AI
WasmEdge
WeChat
what3words
Wix
WordPress
XMTP
Score breakdown
Frequency
65.6
log-scaled weighted occurrences
Breadth
1.5
spread across providers
Quality lift
32.5
mean composite of providers using it
Cohesion
28.0
strength of nearest seed neighbor
Related tags
TypeScript 70 co-occurrences
Node.js 36 co-occurrences
SDK 109 co-occurrences
iOS 32 co-occurrences
Python 48 co-occurrences
Android 29 co-occurrences
Frontend 23 co-occurrences
Web 23 co-occurrences
Where this tag comes from
Api tag226
Provider tag57
Openapi tag1
Openapi op tag18
Cohort brief
Auto-generatedThe 55 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
55
all scored
Mean Kin Score
27.4
+4.5 vs catalog 22.9
Mean Agent Readiness
8.6
-3.3 vs catalog 11.9
Spread
6.3–67.8
median 25.1 · σ 13.4
How the 55 split by band
Exemplar 1Strong 1Developing 8Thin 16Emerging 27Minimal 2
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Operational Transparency | 25.9 | 13.7 | +12.2 | 55 |
| Developer Ergonomics | 34.8 | 23.2 | +11.6 | 55 |
| Discoverability | 61.2 | 58.1 | +3.1 | 55 |
| Contract Governance | 8 | 6.3 | +1.7 | 55 |
| Contract Quality | 18.1 | 17.6 | +0.5 | 55 |
| Access Clarity | 24.5 | 26.5 | -2 | 55 |
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) | 9% | 14% | -5 |
| MCP server (first-party) | 9% | 12% | -3 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 2% | 11% | -9 |
| Security | 95% | 98% | -3 |
| Arazzo workflows | 2% | 2% | 0 |
| Governance rules | 36% | 14% | +22 |
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 BrowserStack 67.8
- 2 Freestyle 58.1
- 3 npm 49.8
- 4 Plotly 49
- 5 Chroma 48.7
- 6 vlt 48
- 7 Val Town 47.1
- 8 TypeScript 43.4
- 9 Codehooks 41.5
- 10 Deno 39.8
Top by Agent Readiness
- 1 BrowserStack 44.1
- 2 Chroma 34.2
- 3 Freestyle 29.8
- 4 TensorFlow 26.8
- 5 npm 26.6
- 6 Plotly 26.3
- 7 Val Town 22.3
- 8 Deno 21.5
- 9 Mastra 21
- 10 Codehooks 20.9
All 57 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
5 October 2026, across 29093
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.