API Evangelist area
Authentication
378 related providers on APIs.io
Explore the full Authentication area →
Authentication is one of the API Evangelist areas on the APIs.io network — a focused corner of the API landscape. The full area lives at authentication.apievangelist.com.
30 providers on the network work in this area, including Kit, drchrono, Cvent Registration, Zoho CRM, Arcade, Cvent, and 24 more — each links out to that provider’s APIs, schemas, and governance artifacts.
Related areas: Communications, Security, Agents, and SDKs. Browse every area at areas.apis.io.
About this area
A curated index of services, tooling, and open source solutions for API authentication, authorization, identity management, and secrets management. This collection covers identity…
Related providers (378)
Top 30 of 378 network providers tagged for this area — search the full set on apis.io.
| Provider | Description | APIs | Rating |
|---|---|---|---|
| Kit | Kit (formerly ConvertKit) is a creator email marketing platform whose REST API v4 covers subscribers, tags, custom fields, forms and landing pages, sequences, broadcasts, snippe... | 1 | exemplar |
| drchrono | drchrono, part of EverCommerce's EverHealth portfolio, is an all-in-one EHR, practice management and medical billing platform for independent US medical practices. It publishes ... | 2 | exemplar |
| Cvent Registration | Cvent Registration is the event registration product within the Cvent Event Cloud, providing online registration websites, attendee data capture, payment processing, registratio... | 2 | exemplar |
| Zoho CRM | Zoho CRM is Zoho Corporation's AI-powered sales and customer relationship management platform, used to manage leads, contacts, accounts, deals, activities and customer engagemen... | 105 | exemplar |
| Arcade | Arcade.dev is the MCP runtime for production AI agent deployments. The Arcade Engine — a hosted or self-hostable API surface — handles OAuth user authorization, manages user tok... | 1 | exemplar |
| Cvent | Cvent is a leading meetings, events, and hospitality technology provider with over 4,800 employees and 22,000+ customers worldwide. The Cvent platform spans Event Cloud (event m... | 2 | exemplar |
| Kraken | Kraken is one of the world's largest and longest-running cryptocurrency exchanges, founded in 2011 and headquartered in San Francisco. Kraken offers Spot and Futures trading, st... | 24 | exemplar |
| AWeber | AWeber is an email marketing and automation platform for small businesses, creators, and entrepreneurs providing email broadcasts, drip campaigns, landing pages, sign-up forms, ... | 4 | exemplar |
| iOS | iOS is Apple's mobile operating system and the developer platform behind iPhone apps. While the bulk of the iOS SDK is delivered as Swift / Objective-C client frameworks (UIKit,... | 1 | exemplar |
| Twilio | Cloud communications platform providing APIs for SMS, voice, video, and authentication services. Twilio offers 30+ APIs covering messaging, voice, video, email, identity verific... | 40 | exemplar |
| Kinde | Kinde is a developer-first authentication and customer identity platform that bundles authentication (passwords, passwordless, social, enterprise SSO), authorization (roles, per... | 2 | exemplar |
| Microsoft Entra ID (formerly Azure AD) | Microsoft's cloud-based identity and access management service that helps employees sign in and access resources. Azure AD provides OAuth, OpenID Connect, SAML, and other identi... | 9 | exemplar |
| Commerce Layer | Commerce Layer is the headless, multi-market commerce API used by global brands to sell everywhere — web, mobile, in-store, chatbot, AI agent, and IoT. The company exposes a JSO... | 3 | exemplar |
| Cvent Event Cloud | Cvent Event Cloud is the event management product line of the Cvent Platform. It supports the full event lifecycle: event creation, registration, marketing, agenda and session m... | 2 | exemplar |
| Jefferson Health | Jefferson Health is a multi-state nonprofit academic health system based in Philadelphia, Pennsylvania, operating more than 30 hospitals and over 700 care sites across eastern P... | 2 | exemplar |
| Authentik | Authentik is an open source identity provider from Authentik Security Inc., a public benefit company, exposing a 1,193-operation REST API at /api/v3 on every self-hosted instanc... | 1 | exemplar |
| Immutable | Immutable is a games growth and blockchain infrastructure company whose platform spans two connected halves: Immutable Audience, a games-focused CDP, attribution and player-acti... | 2 | exemplar |
| Tvarka ATK API | A single REST API estate for Lithuanian eID authentication and qualified electronic signing (QES). The ATK API reads the Lithuanian identity card itself - physical smart-card re... | 4 | exemplar |
| Frontegg | Frontegg is a customer identity and access management (CIAM) platform for B2B SaaS. It provides self-serve authentication, multi-tenancy, role-based access control, single sign-... | 10 | exemplar |
| Hustle | Hustle is an employee-owned text, video, and voice communications platform that lets organizations engage audiences at scale from a single interface. It combines broadcast texti... | 1 | strong |
| Clerk | Clerk is a complete user management and authentication infrastructure platform offering embeddable UI components, flexible APIs, and admin dashboards. It provides full-stack aut... | 3 | strong |
| Strivacity | Strivacity is a customer identity and access management (CIAM) vendor that runs a single-tenant, dedicated-cloud identity platform for consumer, partner, B2B and — since its Age... | 6 | strong |
| Lever | Lever is an applicant tracking system (ATS) and candidate relationship management (CRM) platform for recruiting teams, now owned by Employ Inc. alongside Jobvite, JazzHR and NXT... | 2 | strong |
| Infusionsoft (Keap) | Infusionsoft, now branded as Keap and owned by Thryv Holdings, is a sales and marketing automation CRM built for small businesses that combines contact management, tagging, emai... | 9 | strong |
| Barndoor | Barndoor AI is the control plane for agentic AI, providing secure access and governance for AI agents and Model Context Protocol (MCP) servers. Founded in 2024 by Oren Michels (... | 1 | strong |
| PropelAuth | PropelAuth is a B2B SaaS authentication and multi-tenant user management platform purpose-built for organizations that sell to other organizations. It provides hosted login UIs,... | 3 | strong |
| Vim | Vim is a United States healthcare technology company (getvim.com) that operates a clinical workflow and point-of-care integration platform connecting health plans, provider orga... | 2 | strong |
| Weave | Weave (Weave Communications, Inc., NYSE: WEAV) is an all-in-one customer communication and payments platform built for small and medium healthcare and services businesses — dent... | 1 | strong |
| Amazon Cognito | Amazon Cognito is a fully managed AWS user identity and authentication service that adds sign-up, sign-in, and access control to web and mobile applications, scaling to millions... | 2 | strong |
| Cvent Hospitality Cloud | Cvent Hospitality Cloud is the hotel and venue product line of the Cvent Platform. It includes the Cvent Supplier Network (the marketplace connecting event planners with hotels ... | 1 | strong |
Related areas
Communications (3 shared)
Security (3 shared)
Agents (2 shared)
SDKs (2 shared)
AI Automation (1 shared)
Cohort brief
Auto-generatedThe 30 providers in the APIs.io catalog working in Authentication, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
30
all scored
Mean Kin Score
70.2
+46.4 vs catalog 23.8
Mean Agent Readiness
37.4
+25.8 vs catalog 11.6
Spread
63.2–82.8
median 69.4 · σ 5.3
How the 30 split by band
Exemplar 19Strong 11Developing 0Thin 0Emerging 0Minimal 0
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Access Clarity | 83.1 | 26.3 | +56.8 | 30 |
| Operational Transparency | 67.3 | 13.9 | +53.4 | 30 |
| Developer Ergonomics | 69.6 | 23.3 | +46.3 | 30 |
| Contract Quality | 65 | 19.8 | +45.2 | 30 |
| Contract Governance | 29.1 | 6.3 | +22.8 | 30 |
| Discoverability | 72.8 | 61 | +11.8 | 30 |
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) | 33% | 10% | +23 |
| MCP server (first-party) | 27% | 9% | +18 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 57% | 11% | +46 |
| Security | 100% | 97% | +3 |
| Arazzo workflows | 30% | 2% | +28 |
| Governance rules | 53% | 14% | +39 |
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
Top by Agent Readiness
- 1 Immutable 60.2
- 2 Kit 55.3
- 3 Cvent Hospitality Cloud 53.2
- 4 Vim 48.4
- 5 Microsoft Entra ID (formerly Azure AD) 46.8
- 6 Cvent Event Cloud 46.1
- 7 Tvarka ATK API 44.9
- 8 Zoho CRM 43.5
- 9 Cvent 42.6
- 10 Infusionsoft (Keap) 42.6
All 30 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
9 September 2026, across 27528
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 area here is available over the APIs.io API and to AI agents over MCP.