Feature

OAuth 2.0

Delegated authorization via OAuth 2.0 flows.

158 providers 1638 APIs 115 declared variants

The API supports OAuth 2.0 for delegated authorization — authorization code, client credentials, or device flows issuing scoped access tokens. Integrators care because it is the baseline for acting on a user’s behalf without handling their credentials.

158 API providers on the APIs.io network offer oauth 2.0. The highest-rated are HubSpot, Shopify, AhaSend, Microsoft Entra ID (formerly Azure AD), GitHub Actions.

Providers

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

Exemplar 35 Complete, well-documented, and agent-ready
HubSpotHubSpot is an AI-native customer platform built around the Smart CRM, unifying marketing, sales, customer s...107 published contracts91.6ShopifyShopify is a complete commerce platform that lets you start, grow, and manage a business, selling online, i...3 published contracts84.4AhaSendAhaSend is a developer-focused transactional email platform providing fast, reliable email delivery via RES...2 published contracts84.3Microsoft Entra ID (formerly Azure AD)Microsoft's cloud-based identity and access management service that helps employees sign in and access reso...9 published contracts83.3GitHub ActionsGitHub Actions is GitHub's hosted CI/CD and workflow automation platform, and this record covers the REST A...1 published contract82.8GitHubThe GitHub REST API allows developers to programmatically interact with GitHub resources including reposito...38 published contracts82.7OptimizelyOptimizely is a digital experience platform that provides A/B testing, feature flagging, content management...38 published contracts81.3LaunchDarklyLaunchDarkly is a feature management and runtime control platform. Development teams use it to wrap release...3 published contracts80.8MailchimpMailchimp is an Intuit company providing a marketing automation platform and email marketing service for ma...4 published contracts79.7MedplumMedplum is an Apache 2.0 open-source, FHIR-native developer platform for shipping clinical software. It bun...1 published contract79.1AtlassianAtlassian is a software company that develops collaboration, productivity, and project management tools to ...124 published contracts77.5AcquiaAcquia is a leading provider of digital experience management solutions for organizations looking to enhanc...20 published contracts76.8JiraAPIs for Atlassian Jira project management and issue tracking platform.4 published contracts76.8OktaOkta is the workforce identity incumbent — its Identity Cloud platform (also called the Okta Workforce Iden...2 published contracts76.1KlaviyoKlaviyo is a marketing automation and customer data platform built for ecommerce. Build custom integrations...1 published contract73.6ZohoZoho is a comprehensive cloud software suite offering 55+ integrated business applications for sales, marke...267 published contracts72.8ClickupClickUp is a work management platform — tasks, Lists, Folders, Spaces, Docs, Chat, Goals, time tracking, da...16 published contracts72.4BuildkiteBuildkite is a hybrid CI/CD platform that combines a hosted control plane (pipelines.buildkite.com) with se...2 published contracts72.1ToastToast is a restaurant technology platform providing cloud-based point-of-sale, payment processing, and busi...21 published contracts71.0TaboolaTaboola (NASDAQ: TBLA) is a New-York-headquartered native and discovery advertising company founded in 2007...7 published contracts70.9ConfluenceAPIs for Atlassian Confluence - team collaboration and knowledge management software.5 published contracts70.6Auth0Auth0 (now part of Okta) is a leading identity-as-a-service platform providing authentication and authoriza...3 published contracts70.5AirbyteAirbyte is an open-source data integration platform that enables businesses to easily and efficiently move ...1 published contract70.3DocusignDocuSign helps organizations connect and automate how they prepare, sign, act on, and manage agreements. As...7 published contracts70.3CircleCICircleCI is a continuous integration and continuous delivery (CI/CD) platform that automates software build...2 published contracts70.0Constant ContactConstant Contact is a small-business email and digital marketing platform offering email campaigns, automat...3 published contracts69.9SinchSinch is a cloud communications platform providing APIs for SMS, voice, video, fax, verification, and omnic...10 published contracts69.7AvailityAvaility is a healthcare information network and clearinghouse providing REST APIs for real-time HIPAA EDI ...4 published contracts68.9Adobe Experience CloudAdobe Experience Cloud is an integrated suite of applications and services for digital marketing, analytics...5 published contracts68.7SlackSlack is a cloud-based team collaboration platform that provides chat, file sharing, and integrations with ...32 published contracts68.4SallaSalla is a Saudi Arabia-based e-commerce platform — often called the Shopify of the Middle East — that lets...3 published contracts68.3SpeakeasySpeakeasy provides an AI control plane platform that lets enterprises govern, secure, and observe AI agents...1 published contract68.3SendcloudSendcloud is Europe's leading shipping platform for e-commerce, headquartered in Eindhoven, Netherlands. Th...30 published contracts68.0CumulocityCumulocity is an enterprise AIoT (Artificial Intelligence of Things) platform that connects, manages, and a...17 published contracts67.5GoToWebinarGoToWebinar is GoTo's (formerly LogMeIn) webinar and virtual event platform. The GoToWebinar REST API lets ...3 published contracts67.1
Strong 35 Solid coverage with minor gaps
Dun & BradstreetDun & Bradstreet is a leading global provider of business decisioning data and analytics, anchored by the D...1 published contract66.4Commerce LayerCommerce Layer is the headless, multi-market commerce API used by global brands to sell everywhere — web, m...4 published contracts65.6MoovMoov is a financial infrastructure platform that enables developers to embed money movement capabilities di...2 published contracts65.6Apollo.ioApollo.io is a sales intelligence and go-to-market platform combining a database of 240M+ contacts and 30M+...6 published contracts65.1DeelDeel is a global workforce platform combining payroll, Employer of Record (EOR), independent contractor man...99 published contracts64.2PropelAuthPropelAuth is a B2B SaaS authentication and multi-tenant user management platform purpose-built for organiz...3 published contracts63.2NotionNotion is an all-in-one workspace that combines notes, tasks, wikis, and databases. The Notion API allows d...1 published contract62.9Independence Blue CrossIndependence Blue Cross (IBX) is the Blue Cross Blue Shield Association licensee for southeastern Pennsylva...5 published contracts62.5StytchStytch is an authentication and identity infrastructure provider. Its Consumer and B2B APIs cover passwordl...4 published contracts61.9BoxBox is a cloud content management and file sharing service for businesses. Box provides a secure platform f...52 published contracts61.5FigmaFigma is a collaborative interface design tool with a comprehensive REST API for accessing and manipulating...3 published contracts61.0WebflowWebflow provides a visual web development platform with a comprehensive REST API for programmatically manag...16 published contracts60.6AutodeskAutodesk is a global leader in design, engineering, and entertainment software, providing cloud-connected p...12 published contracts60.4FitbitFitbit is a wearable health and fitness platform — devices (trackers, smartwatches, smart scales) plus a co...11 published contracts60.1AllegionAllegion plc is a global security products company with $3.8B in 2024 revenue, 13,000+ employees, and 30+ b...2 published contracts59.8ServiceTitanServiceTitan is the operating system for the trades — all-in-one field service management software for resi...8 published contracts59.8IntuitCollection of APIs offered by Intuit for financial and business management services.1 published contract59.2FlutterwaveFlutterwave is a pan-African payment infrastructure company providing the rails for businesses to accept, s...1 published contract58.2FilevineFilevine is the leading legal case management and operating intelligence platform for plaintiff, personal-i...1 published contract57.4LichessLichess is a free, ad-free, open-source online chess server operated by a French nonprofit and powered enti...2 published contracts57.0BigCommerceBigCommerce is a leading e-commerce platform providing APIs for building and managing online stores, produc...59 published contracts56.9DescopeDescope is a customer and agentic identity access management (CIAM) platform founded in 2022 by veterans of...1 published contract56.4ZoomZoom is a communications platform that allows users to connect with video, audio, phone, and chat. The Zoom...12 published contracts56.3Webflow API and DocumentationWebflow provides a visual web development platform with a comprehensive REST API for programmatically manag...5 published contracts56.0FusioFusio is Apache-2.0, self-hosted API management from apioo (Christoph Kappestein, Germany). An operator ins...4 published contracts55.9IroncladIronclad is the enterprise contract lifecycle management (CLM) platform used by legal, sales, procurement, ...3 published contracts55.8TibberTibber is a fully-digital Nordic and European retail electricity provider operating in Norway, Sweden, Germ...1 published contract55.8TraktTrakt is the personal media database for movies and TV. Its API v2 (api.trakt.tv) exposes ~150 endpoints ac...1 published contract55.7BringgBringg is a last-mile delivery and fulfillment orchestration platform headquartered in Tel Aviv (founded 20...3 published contracts55.5MixpanelMixpanel is a business analytics service company that tracks user interactions with web and mobile applicat...10 published contracts55.5CivitaiCivitai is the largest open community for Stable Diffusion, SDXL, Flux, and video AI models — hosting over ...2 published contracts55.4InterswitchInterswitch is Nigeria's foundational digital payments and transaction-switching company, founded in 2002 a...10 published contracts55.3BB&T Corp (Truist)BB&T Corporation merged with SunTrust Banks in December 2019 to form Truist Financial Corporation, the sixt...30 published contracts55.0JobberJobber is field service management software for home and commercial service businesses, serving 100,000+ bu...1 published contract54.8AutheliaAuthelia is an open source authentication and authorization server providing multi-factor authentication an...1 published contract54.5
Developing 53 Usable, with meaningful gaps to close
TIDALTIDAL is a high-fidelity music streaming service owned by Block (Square's parent, acquired 2021) offering H...8 published contracts54.1WHOOPWHOOP is a fitness and recovery wearable platform providing a REST API for accessing sleep, recovery, strai...3 published contracts53.8ReplicateReplicate lets you run machine learning models in the cloud with a simple API. Thousands of open-source mod...1 published contract53.1WunderGraphFull Lifecycle API Management for (Federated) GraphQL. Schema Registry, composition checks, analytics, metr...11 APIs53.0FactorialFactorial is an all-in-one HR, payroll, time, talent, finance, and IT management platform headquartered in ...2 published contracts52.8Workday Report WriterAPIs for Workday Report Writer - a tool for creating custom reports and data extracts from Workday HCM and ...4 published contracts52.7Pure StoragePure Storage is an American publicly traded technology company specializing in all-flash data storage hardw...3 published contracts52.6AutopayAutopay is a Norwegian parking payment and management platform that provides APIs for parking operators, la...1 published contract52.1RunwayRunway is an applied AI research company that builds generative AI tools for creative professionals. Their ...9 published contracts51.7PayPalPayPal is a global online payment system that lets individuals and businesses send and receive money electr...25 published contracts51.5PeopleSoftCollection of Oracle PeopleSoft Enterprise application APIs for Human Capital Management, Financial Managem...21 published contracts51.4HostawayHostaway is an AI-powered vacation rental management platform that consolidates property management, channe...16 APIs51.0TelstraTelstra is Australia's largest telecommunications and mobile network operator, providing fixed broadband, m...2 published contracts50.5ZitadelZitadel is an open source identity infrastructure platform providing secure authentication and user managem...1 published contract50.5AudatexAudatex (a Solera company) provides automotive claims and repair solutions with data and technology service...6 published contracts50.3CalmCalm is a leading consumer mental-wellness company whose app offers guided meditations, Sleep Stories, brea...1 published contract50.0CrewAI CloudCrewAI Cloud (CrewAI AMP) is the managed Agent Management Platform for deploying, monitoring, scaling, and ...1 published contract49.7Login.govLogin.gov is the U.S. federal government's secure single sign-on and identity verification service for the ...2 published contracts49.7UberUber is a global technology platform offering transportation, food delivery, and logistics services. Its de...6 published contracts49.0MaerskA.P. Moller - Maersk is the Danish integrated container shipping and logistics company. Maersk operates one...8 published contracts48.7Adobe CaptivateAdobe Captivate is an eLearning authoring tool used to create responsive eLearning content, software demons...1 published contract48.5Lunar EnergyLunar Energy is a Mountain View, California-based residential clean-energy company founded in August 2020 b...2 published contracts48.3AutoCADAPIs for Autodesk AutoCAD, providing programmatic access to CAD design, drawing, and automation capabilitie...6 APIs47.8WiktionaryWiktionary is the free, collaborative multilingual dictionary project of the Wikimedia Foundation, the dict...11 APIs47.8DiscordDiscord is a voice, video and text communication service used by hundreds of millions of people to hang out...3 published contracts47.4JustworksJustworks is a New York City-based Professional Employer Organization (PEO) and small-business HR platform....2 published contracts46.6DeepgramDeepgram is an enterprise voice AI platform that provides speech-to-text, text-to-speech, and voice agent A...3 published contracts46.1AmTrust Financial ServicesAmTrust Financial Services is a multinational specialty property and casualty insurer focused on small to m...9 published contracts46.0Blizzard EntertainmentBlizzard Entertainment is an American video game developer and publisher and a subsidiary of Activision Bli...5 published contracts46.0WrikeWrike is a collaborative work management platform used by 30,000+ organizations. The Wrike Developer Platfo...1 published contract45.8NangoNango.dev is a developer infrastructure platform that simplifies building product integrations with externa...1 published contract44.8PaychexPaychex, Inc. (NASDAQ: PAYX) is a Rochester, New York-based provider of integrated payroll, human resources...3 published contracts44.6SAS InstituteSAS Institute is a global leader in analytics, AI, and data management software. SAS Viya, its cloud-native...1 published contract44.6Workday RecruitingAPIs for Workday's cloud-based recruiting and talent acquisition solution, providing programmatic access to...1 published contract44.6AltruistiqAltruistiq is a London-based climate intelligence platform for food and beverage and other FMCG enterprises...1 published contract44.4LinearLinear is an issue tracking and product development platform for software teams covering Intake, Plan, Buil...4 APIs44.1Australia PostAustralia Post is Australia's primary postal operator, offering a developer platform with REST APIs for e-c...2 published contracts44.0EVE OnlineEVE Online is a massively multiplayer online (MMO) space game published by CCP Games. The EVE Online third-...7 published contracts44.0AmadeusAmadeus for Developers is the self-service developer program from Amadeus IT Group, the leading technology ...71 published contracts43.3BasecampBasecamp is a project management and team collaboration platform developed by 37signals. The Basecamp REST ...2 published contracts43.3RollbarRollbar is a real-time error tracking and monitoring platform for software teams. It automatically captures...4 published contracts43.3CopperCopper is a CRM platform built natively for Google Workspace, designed to help teams cultivate enduring cli...1 published contract42.9PandaDocPandaDoc is a document automation platform that enables businesses to create, send, track, and e-sign docum...1 published contract42.7Twilio SegmentTwilio Segment is a customer data platform that collects, cleans, and routes customer data to hundreds of d...4 published contracts42.7SAP FieldglassSAP Fieldglass is a cloud-based vendor management system (VMS) that enables organizations to manage their c...5 published contracts42.5Epidemic SoundEpidemic Sound is a Stockholm-based royalty-free music and sound effects licensing platform for video creat...2 published contracts42.4AmeriHealth CaritasAmeriHealth Caritas is one of the largest Medicaid managed care organizations in the United States, serving...3 published contracts42.2UnkeyUnkey is the developer platform for modern APIs, providing globally distributed API key management, rate li...1 published contract42.2FreshworksFreshworks is a software company that develops cloud-based business software including customer support, IT...6 published contracts41.8DropboxDropbox is a file hosting service operated by the American company Dropbox, Inc., headquartered in San Fran...2 published contracts41.6FivetranFivetran is an automated data integration platform providing pre-built connectors for syncing data from Saa...1 published contract41.3Ruby Programming Language and Popular API GemsA profile of the Ruby programming language ecosystem from an API perspective: the language and its standard...1 published contract40.8Department of Veterans Affairs (VA Lighthouse)VA Lighthouse is the US Department of Veterans Affairs' developer API platform. Published at developer.va.g...24 published contracts40.4
Thin 29 Limited public surface area
PolarPolar Electro Oy (operating as Polar Global) is a Finnish sports and fitness technology company founded in ...3 published contracts38.9Bank of AmericaBank of America is a multinational investment bank and financial services holding company providing consume...2 published contracts38.0DexcomDexcom is a leading medical device company that develops, manufactures, and distributes continuous glucose ...7 APIs38.0SplitSplit, now part of Harness Feature Management and Experimentation, is a feature flag and experimentation pl...2 published contracts38.0AirbusA European multinational aerospace corporation designing, manufacturing, and selling commercial aircraft, h...1 published contract37.8AppDynamicsAppDynamics, now part of Cisco, is an application performance monitoring (APM) and observability platform t...9 published contracts37.8ProductivThe SaaS Management Platform that delivers the industrys most comprehensive view of your SaaS portfolio wit...1 published contract37.7AmpersandAmpersand is a developer-first platform for building native SaaS integrations. It provides an embeddable UI...2 published contracts37.1OlaOla is India's leading ride-sharing and mobility platform operating across 100+ cities in India and interna...5 APIs35.7United States Postal ServiceThe United States Postal Service (USPS) provides a modern REST API platform at developers.usps.com that giv...4 published contracts35.4TrioptimaTrioptima provides post-trade infrastructure services for the OTC derivatives market, including portfolio c...1 published contract34.83M3M is a global science and manufacturing company. The 3M Partner and Supplier API provides real-time access...1 published contract34.6Ariba Guided BuyingSAP Ariba Guided Buying provides a consumer-like shopping experience for enterprise procurement, enabling e...2 APIs34.1UpworkUpwork is a global freelancing platform that connects businesses with independent professionals through a t...7 APIs33.8Monday.comAn expressive API to interact with your workflows, automate processes, power integrations, and more!1 published contract33.4BNY MellonBNY Mellon is a global investments company providing asset servicing, asset management, wealth management, ...1 published contract33.0CieloCielo is one of the largest Brazilian card acquirers and a publicly traded company (B3:CIEL3), originally f...13 APIs32.7RipplingRippling is a unified workforce platform spanning HR, IT, and Finance with programmable APIs for employees,...1 published contract32.5FormantFormant is a San Francisco–based robotics and physical-operations cloud platform that lets companies operat...1 published contract31.8AllianzAllianz is one of the world's largest insurance and financial services companies, serving over 86 million c...6 APIs31.3Allianz TradeAllianz Trade APIs enable businesses to automate trade credit insurance management including cover requests...4 APIs31.2Agilent TechnologiesAgilent Technologies is a global leader in life sciences, diagnostics, and applied chemical markets, provid...10 APIs30.9MagentoOverview of the Adobe Commerce and Magento Open Source REST API documentation.1 published contract30.7AbacusAbacus (now part of Emburse Spend) is an expense management platform that allows businesses to streamline e...3 APIs29.9GlamaGlama is an all-in-one AI workspace combining an MCP server marketplace and registry, a managed MCP gateway...7 APIs29.6Volvo CarsVolvo Cars is a Swedish premium automotive OEM (headquartered in Gothenburg, owned by Geely) that operates ...4 APIs29.4BMW ConnectedDriveBMW ConnectedDrive is BMW Group's umbrella for connected vehicle services spanning navigation, remote servi...1 published contract28.6Battle.netBattle.net is Blizzard Entertainment's online gaming platform and developer API ecosystem. It provides game...12 APIs28.3Model Context Protocol (MCP)Model Context Protocol is an open, JSON-RPC 2.0 protocol from Anthropic that standardizes how AI applicatio...17 APIs26.7
Emerging 5 Early or largely undocumented
Minimal 1 Almost no public developer surface

What Providers Actually Declared

This feature is a canonical term. These are the free-text strings providers wrote in their own apis.yml that map onto it.

30+ OAuth scopes for fine-grained partner accessAPI Key + OAuth 2.0Auth: OAuth 2.0/1.0a, API Key, Basic, JWT, customAuthentication API (OAuth 2.0 / OIDC / SAML / WS-Federation)Authentication via API Key (AUTH-KEY header), Basic Auth, OAuth 2.0 Client Credentials, or OAuth 2.0 Authorization CodeAuthentication — OAuth 2.0 client-credentials via the Passport token service plus legacy InterswitchAuth signature scheme (SHA1-signed headers)B2B Authentication API (Organizations, Members, SSO SAML/OIDC, SCIM, Discovery, RBAC, Magic Links, OTP, OAuth, Sessions)Backstage API — OAuth 2.0 client credentials, base URL https://backstage.taboola.com/backstage/api/1.0Browser-based MCP Inspector with ephemeral sandbox, JSON-RPC trace view, OAuth flow handling, and shareable sessionsBuzz credit system for metering generation, with per-app spend caps on delegated OAuth tokensDeveloper Platform with OAuth 2.0 (authorization code) member-data APIExperimental GitHub OAuth authentication with JWT (`--auth-config auth.yaml`); disabled by default, WebSockets require `?token=` query param when enabledHTTP Basic + OAuth 2.0 client credentialsHeadless, API-first commerce platform with stateless OAuth 2.0 checkout to sell anywhere — web, mobile, chatbot, AI agent, IoT, in-store kioskJustworks Partner API at public-api.justworks.com with OAuth 2.0 authorization-code flowManaged OAuth AuthenticationOAuth 2.0OAuth 2.0 (3LO) and API tokensOAuth 2.0 (3LO), API tokens, OAuth client credentialsOAuth 2.0 (Authorization Code + PKCE) via EVE SSO with around 60 fine-grained scopesOAuth 2.0 (JWT, ACG, AGCG, IGCG)OAuth 2.0 (account-level and user-level)OAuth 2.0 (private apps) and API keysOAuth 2.0 + API keysOAuth 2.0 + API keys (Bearer)OAuth 2.0 + API tokensOAuth 2.0 + Application API tokensOAuth 2.0 + Personal API tokensOAuth 2.0 + Personal API tokens + service accountsOAuth 2.0 + admin/customer/integration tokensOAuth 2.0 + personal API tokensOAuth 2.0 + project tokensOAuth 2.0 + root keysOAuth 2.0 + self-client tokensOAuth 2.0 + service accountsOAuth 2.0 + workspace API keysOAuth 2.0 + workspace API tokensOAuth 2.0 / OIDCOAuth 2.0 / OpenID Connect identity-provider endpoints including discoveryOAuth 2.0 Authentication

Showing 40 of 115 declared variants

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