emerging · 0.5 market domain

OTP

Score 21.4 / 100 16 providers +14 via APIs 19 APIs Search apis.io →
Workflows using this tag
Stytch SMS One-Time Passcode Login · Stytch Stytch B2B Create Organization and Invite Member · Stytch Stytch B2B Email OTP Discovery and Exchange · Stytch Stytch OAuth Authenticate and Session · Stytch Stytch User Create, Search, and Delete · Stytch Stytch Password Reset by Email · Stytch Stytch TOTP Authenticator Enrollment · Stytch Stytch B2B TOTP Authenticator Enrollment · Stytch
Business capabilities this tag reaches
Cybersecurity Management 3

Providers using this tag (16)

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

Strong 3 Solid coverage with minor gaps
JuriSignElectronic SignatureE-SignatureeIDASDocument Signing1 API65.3TempMailGrab APIEmailtemporary-emailDisposable Email2 APIs62.4UnifonicCompanyEnterpriseCPaaSMessaging3 APIs59.0
Developing 4 Usable, with meaningful gaps to close
CellulantPaymentsMobile MoneyCheckoutPayouts3 APIs51.2Route MobileTelecommunicationsIndiaCPaaSMessaging5 APIs51.0KaleyraCPaaSMessagingSMSWhatsApp1 API50.3KeynuaCompanyElectronic SignatureDigital SignatureIdentity Verification1 API41.8
Thin 4 Limited public surface area
Sinch Verification APINumber VerificationPhone Verification2FA1 API37.8PreludeNumber VerificationPhone VerificationAuthentication1 API33.8Telnyx Verify APINumber VerificationPhone Verification2FA1 API33.3TermiiMessagingSMSWhatsApp1 API31.9
Emerging 3 Early or largely undocumented
BICSNumber VerificationTelecommunicationsMobile IdentityFraud Prevention8 APIs23.3Power2SMECompanyMarketplaceSmall BusinessProcurement1 API23.1tyntecNumber VerificationCPaaSSMSWhatsApp1 API23.1
Minimal 2 Almost no public developer surface
Rakuten MobileTelecommunicationsMobile Network OperatorCarrier5G3 APIs10.0OCRAAuthenticationOCRASecurity3.0

APIs with this tag (19)

Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Strong 2 Solid coverage with minor gaps
Stytch OTP APIThe OTP API from Stytch — 7 operation(s) for otp.61.4Swisscom Phone Number Validation APITwo-factor authentication API that starts an SMS token validation flow against an MSISDN and then verifies ...59.1
Developing 9 Usable, with meaningful gaps to close
MTN Group OTP APIThe OTP API from MTN Group — 2 operation(s) for otp.51.6Route Mobile OTP APIAPIs for OTP generation and verification.51.01Kosmos OTP APIThe OTP API from 1Kosmos — 3 operation(s) for otp.50.9Truecaller Non-Truecaller User Verification APIServer-side validation for the drop-call / IM-OTP verification flow that covers users without the Truecalle...49.3Fyno Verify APIOTP and TOTP-based verification API for authenticating users via SMS, email, or authenticator apps. Bundled...48.3Toqio OTP APIThe OTP API from Toqio — 1 operation(s) for otp.47.2Keynua APIREST API for creating contracts, sending them to signers over WhatsApp/SMS/email, running biometric identit...41.8Telesign Voice APISend voice messages including OTPs, alerts, and notifications to phone numbers worldwide. Supports text-to-...40.7Plivo Verify APIThe Plivo Verify API delivers OTPs over SMS, voice, WhatsApp, or email and verifies user-supplied codes, su...40.5
Thin 2 Limited public surface area
Riskified OTP APIInitiate a one-time password challenge as a step-up verification mechanism for high-risk login, password re...34.2Authsignal Client APIBrowser / device-facing REST API for fully custom authentication UIs. Supports passkeys, authenticator apps...34.1
Emerging 5 Early or largely undocumented
IYK APIThe IYK API provides primitives for building digi-physical experiences. Core endpoints manage chips (NFC ta...25.7PocketBase Authentication APIAuthentication endpoints supporting password-based login, OAuth2 providers, one-time passwords, token refre...24.3BICS Number Verification APIPhone number verification and mobile authentication for anti-fraud, KYC and onboarding - validating that a ...23.3tyntec 2FA Authentication APIProgrammatic two-factor authentication and one-time passwords. Send an OTP to a recipient number (POST /otp...23.1TranZak SMS APIREST API for sending marketing bulk SMS messages and OTP/verification codes. Supports up to 500 recipients ...19.3
Minimal 1 Almost no public developer surface
Rakuten CPaaS Confirm (OTP) APIOne-time PIN delivery and verification API for two-factor authentication and transaction confirmation, with...10.0

Companies reaching this through an API (14)

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

1Kosmos Authsignal Fyno IYK MTN Group Plivo PocketBase Riskified Stytch Swisscom Telesign Toqio TranZak Truecaller

Score breakdown

Frequency
43.1
log-scaled weighted occurrences
Breadth
0.4
spread across providers
Quality lift
46.2
mean composite of providers using it
Cohesion
8.5
strength of nearest seed neighbor

Related tags

CPaaS 9 co-occurrences Number Verification 5 co-occurrences SMS 15 co-occurrences WhatsApp 6 co-occurrences Verification 7 co-occurrences Identity Verification 8 co-occurrences Messaging 12 co-occurrences Voice 7 co-occurrences

Where this tag comes from

Api tag19
Provider tag16
Openapi tag4
Openapi op tag8

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