canonical · -2.1 market domain

SMS

Score 31.0 / 100 171 providers +36 via APIs 101 APIs Search apis.io →
Business capabilities this tag reaches
Marketing Management 2
Variants seen in the corpus: Short Message ServiceSMS

Providers using this tag (171)

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

Exemplar 31 Complete, well-documented, and agent-ready
TwilioAuthenticationCommunicationsContact CenterEmail55 APIs91.6TelnyxCommunicationsCPaaSVoice2 APIs86.2Customer.ioBehavioral DataBroadcastCampaignsCDP5 APIs84.0BrevoMarketingMarketing AutomationEmail MarketingTransactional Email21 APIs80.8Salesforce Marketing CloudAutomationContent ManagementCustomer JourneyDigital Marketing1 API79.1Amazon PinpointCampaignsCommunicationsEmailMarketing2 APIs77.8Boom AiCompanyArtificial IntelligenceConversational AICustomer Engagement1 API75.6OneSignalNotificationPushEmail2 APIs74.7CloseCRMSales EngagementInside SalesCalling2 APIs73.7GetResponseEmail MarketingMarketing AutomationLanding PagesWebinars50 APIs72.1KlaviyoMarketingEmailCustomer Data1 API72.0TelesignAuthenticationCommunicationsFraud PreventionPhone Intelligence28 APIs72.0AttentiveCompanyMarTechSMS MarketingEmail Marketing2 APIs71.9SinchCommunicationsMessagingVoice21 APIs71.7VonageCommunicationsMessagingTelecommunicationsVideo Conferencing22 APIs71.3Adobe CampaignCampaign ManagementCustomer ExperienceEmail MarketingMarketing Automation2 APIs70.7SendPulseMarketingMarketing AutomationEmailTransactional Email20 APIs68.4Constant ContactCampaignsContactsEmail MarketingEvent2 APIs68.0SMTP2GOEmailEmail DeliveryTransactional EmailSMTP1 API67.4InfobipTelecommunicationsCroatiaCPaaSMessaging50 APIs84.9MailchimpCampaignsEmail MarketingMarketing AutomationNewsletters4 APIs76.7StannpDirect MailPostcardsLettersPrint1 API74.7BrazeCustomer EngagementMarketing AutomationMessagingPush Notifications1 API73.58x8TelecommunicationsUnited StatesCPaaSUCaaS34 APIs71.3Mapp Marketing CloudCompanyMarketingMarketing AutomationEmail4 APIs70.4RegalArtificial IntelligenceAI AgentsVoice AIContact Center6 APIs70.0MoEngageCustomer EngagementMarketing AutomationCustomer Data PlatformPush Notifications30 APIs68.9Zoom PhoneTelecommunicationsUnited StatesUCaaSCloud PBX2 APIs67.9IterableCross-Channel MessagingCustomer EngagementEmailMarketing Automation2 APIs67.5SignalWireCompanyCommunicationsCPaaSVoice2 APIs66.9SAP EmarsysMarketing AutomationCustomer EngagementEmail MarketingOmnichannel25 APIs66.5
Strong 40 Solid coverage with minor gaps
AcousticCompanyMarTechMarketingMarketing Automation2 APIs65.2SyllableCompanyArtificial IntelligenceAI AgentsVoice1 API65.1Vibes PlatformMobile MarketingMobile MessagingPush Notifications5 APIs65.1CM.comCompanyCPaaSMessaging52 APIs64.1NovuNotificationMessagingIn-AppEmail1 API63.4AskNicelyCompanyCustomer ExperienceNPSSurveys2 APIs61.9KnockNotificationMessagingInfrastructureWorkflows2 APIs61.2PostscriptMarketingMessagingE-Commerce1 API60.9DotdigitalMarketing AutomationEmail MarketingMMS43 APIs60.4Spruce HealthHealthcareHIPAACommunicationsSecure Messaging16 APIs60.2ZavuCompanyMessagingWhatsApp1 API60.0RingCentralCommunicationsUCaaSVoiceVideo1 API59.9UnifonicCompanyEnterpriseCPaaSMessaging3 APIs59.0KixieCompanySales EngagementVoiceTelephony3 APIs57.6KudosityMessagingMMSRCS2 APIs57.6HatchCompanyVertical SoftwareCustomer CommunicationConversational AI1 API57.4SaperlyTelephonyVoicePhone Numbers2 APIs57.0Amazon SNSEmailMessagingNotificationPub/Sub1 API56.9MailerSendEmailTransactional EmailSMTPMarketing1 API56.3Phone ComCompanyVoIPTelephonyBusiness Phone2 APIs55.9SendHubCompanyMessagingText Messaging1 API55.9BlueshiftCustomer Data PlatformCustomer EngagementMarketing AutomationCross-Channel Messaging1 API65.9OrttoMarketing AutomationCDPCustomer Data PlatformAnalytics1 API65.9Orange Business5GArtificial IntelligenceB2BCAMARA12 APIs65.3TelstraTelecommunicationsMobileMessaging11 APIs64.7OptusTelecommunicationsAustraliaMobile Network OperatorMessaging4 APIs64.0HustleCompanyEnterpriseMessaging1 API62.9KPNTelecommunicationsNetherlandsMobile Network OperatorBroadband34 APIs62.4The Mobile First CompanyCompanyCommunicationsTelephonyVoice1 API62.0BandwidthCommunicationsCPaaSVoiceMessaging3 APIs61.0SwisscomTelecommunicationsSwitzerlandMobile Network OperatorBroadband2 APIs59.0SonetelCompanyTelephonyPhone NumbersVoIP20 APIs58.6DyspatchCompanyEmailEmail TemplatesMarketing1 API58.5SilverpopEmail MarketingMarketing AutomationCampaign ManagementDigital Marketing1 API58.4CordialCompanyMarketingMarketing AutomationMessaging2 APIs58.1BluecoreCompanyRetailMarketingCustomer Data Platform2 APIs57.7WunderkindCompanyMarketingPersonalizationIdentity Resolution5 APIs57.0VeraDialAI ReceptionistBusiness PhoneTelephonyVoice AI6 APIs56.7Crescendo LabCompanyMessagingMarketing Automation1 API55.2InsiderCompanyCustomer EngagementPersonalizationCustomer Data Platform18 APIs54.4
Developing 36 Usable, with meaningful gaps to close
CommunityMessagingCommunicationsMarketing1 API54.1GladlyCustomer ServiceCustomer ExperienceContact CenterAI Customer Service1 API54.0SimpleTextingMMSMessagingMarketing1 API52.4Bright PatternCompanyContact CenterCCaaSCustomer Experience11 APIs52.2SplioMarketing AutomationCustomer Data PlatformLoyaltyCRM3 APIs51.6SailthruCompanyEmail MarketingMarketing AutomationPersonalization2 APIs51.3Netcore CloudCompanyEmailWhatsApp9 APIs50.2OutRivalCompanyEnterprise SaasConversational AIAI Agents2 APIs49.7EmotiveCompanyMarketingMessaging13 APIs48.9BirdCommunicationsEmailWhatsApp23 APIs48.6ManyChatChat MarketingMessenger MarketingConversational CommerceMarketing Automation3 APIs47.0NextivaCompanyCommunicationsVoiceContact Center5 APIs46.3BulkSMSMessagingCommunicationsBusiness1 API45.0ThoughtlyVoice AIChat AIConversational AIAI Agents1 API44.1KaleyraCPaaSMessagingWhatsApp1 API43.3AvochatoMessagingRCSVoice7 APIs43.0seven.ioCompanyVoiceMessaging11 APIs40.9FynoNotificationMessagingCommunicationsPush Notifications1 API40.0WhippyCommunicationsMessagingEmail1 API39.9Neutrino APIData ValidationData ToolsTelephonyCommunications2 APIs54.1QuoCompanyCommunicationsMessaging1 API53.0MTN GroupTelecommunicationsSouth AfricaAfricaMobile Network Operator111 APIs52.1Route MobileTelecommunicationsIndiaCPaaSMessaging5 APIs51.6TotogiTelecommunicationsUnited StatesBSSOSS2 APIs50.5SyniverseTelecommunicationsUnited StatesCPaaSMessaging11 APIs50.3CellulantPaymentsMobile MoneyCheckoutPayouts3 APIs50.1TPG TelecomTelecommunicationsAustraliaMobile Network OperatorBroadband2 APIs49.8ResponsysCompanyMarketingEmail MarketingMarketing Automation2 APIs49.1KORE WirelessTelecommunicationsUnited StatesIoTeSIM8 APIs47.4PodiumCustomer CommunicationReviewsMessagingPayments12 APIs47.1Telia CompanyTelecommunicationsSwedenNordicBaltics1 API46.8Bharti AirtelTelecommunicationsIndiaMobile Network OperatorNetwork APIs5 APIs46.7SendbirdCustomer ServiceVoiceVideoOmnichannel1 API45.6SuprSendNotificationMulti-ChannelEmail1 API45.4ParadoxArtificial IntelligenceCandidate ScreeningChatbotsConversational AI1 API42.0ConversicaCompanyArtificial IntelligenceConversational AIAI Agents1 API40.8
Thin 26 Limited public surface area
PlivoCommunicationsCPaaSVoice1 API38.9EsendexMessagingCommunicationsBusiness1 API38.7ClickatellCompanyWhatsAppMessaging7 APIs38.4JustCallVoiceCloud PhoneContact Center1 API34.0CourierNotificationEmailPush1 API33.4TextlaCompanyText MessagingBusiness Messaging32.0MSG91CommunicationsCloudMessaging1 API31.4MoviusCompanyCommunicationsMessagingMobile1 API31.3PushbulletNotificationMessagingPush NotificationsDevice Sync1 API30.0ExotelCloud TelephonyVoiceIndia1 API28.8BitcallTelecommunicationsVoIPeSIM1 API28.3SMSAPIMessagingMMSVoice1 API28.0MessenteCPaaSMessagingViber1 API27.4ClickSendCommunicationsMMSVoice1 API26.9NotificationAPINotificationMessagingEmail1 API26.2PhonelyArtificial IntelligenceVoice AIVoice AgentsConversational AI2 APIs38.7engageSPARKCompanyMessagingVoice1 API38.4BurnerCompanyPhone NumbersMMS1 API37.5AppgainCompanyMobile MarketingMarketing AutomationOmnichannel Messaging3 APIs36.6RubiConnectCPaaSCommunications APIsBusiness MessagingRCS1 API36.5PlusThisCompanyMarketing AutomationMarketingCRM33.9Microsoft Azure Communication ServicesEmailIdentity3 APIs33.3GOV.UK NotifyNotificationEmailText Messages1 API32.8PushCompanyCRMCustomer Data PlatformMarketing Automation1 API32.1RingCaptcha (ThriveCom)CompanyTwo-Factor AuthenticationPhone VerificationOne-Time Passcode1 API29.6TelkomselTelecommunicationsIndonesiaMobile Network1 API27.3
Emerging 22 Early or largely undocumented
TextmagicText MessagingMessagingCommunications1 API26.1PreludeNumber VerificationPhone VerificationOTPAuthentication1 API25.446elksCPaaSMMSVoice1 API24.9TermiiMessagingOTPWhatsApp1 API24.9GupshupMessagingWhatsAppConversational AICPaaS1 API23.7EngagespotNotificationIn-App NotificationsPush NotificationsEmail1 API23.1Africa's TalkingCommunicationsUSSDVoice1 API21.9PushwooshNotificationPushEmail1 API20.6OrbitelCompanyCPaaSMessaging16.3RetainIQCompanyArtificial IntelligenceRetention MarketingEmail Marketing16.1AfilnetCompanyCommunicationsVoice15.8TryWiredCompanyIntegrationHubSpotTelegram1 API14.6TranZakFintechMobile MoneyPaymentsAfrica4 APIs13.6ResulticksCompanyMarketingMarketing AutomationOmnichannel1 API24.4BICSNumber VerificationTelecommunicationsMobile IdentityFraud Prevention8 APIs22.2Sempre HealthCompanyHealthHealthcareDigital Health17.8tyntecNumber VerificationCPaaSWhatsApp1 API16.1VodafoneTelecommunicationsMobile Network Operator5G4G27 APIs14.6CaremessageCompanyHealthcarePatient EngagementMessaging12.3Altira HealthCompanyHealthcareHealth TechClinical11.8NaverSearchTranslationMapsCloud Platform18 APIs11.6Rakuten MobileTelecommunicationsMobile Network OperatorCarrier5G3 APIs11.3
Minimal 16 Almost no public developer surface
EdSightsCompanyEducationHigher EducationStudent Success10.1Hi MarleyCompanyInsurance TechInsuranceClaims9.8CommunicationsCPaaSMMSVoice8.7TomoCompanyAi AppsPersonal AssistantConversational AI8.2CenterCompanyPersonal AssistantMessaging8.0JarvieCompanyAI AssistantMessagingiMessage7.7TextaurantCompanyRestaurantHospitalityWaitlist0.0MiaCompanyArtificial IntelligenceVoice AIConversational AI10.7TextsidekickCompanyFrontline WorkersWorkforce Communication10.3SpotHopperCompanyRestaurantHospitalityMarketing10.2RemindMessagingCommunicationsEducationK-1210.0PingerCompanyCommunicationsTelecommunicationsMessaging9.4UpSmithCompanyHome ServicesSkilled TradesAI Agents9.4The NudgeCompanyConsumerLifestyleMobile App3.5VoxoxCompanyTelecommunicationsCommunicationsCloud Communications2.2WupimaCompanyMobileMarketing0.0

APIs with this tag (98)

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 15 Complete, well-documented, and agent-ready
HubSpot Engagement Communications APIThe communications API allows you to log WhatsApp, LinkedIn, or SMS messages to CRM record timelines. You c...93.2Customer.io SMS APICreate and manage the SMS messages you write in Design Studio. These endpoints only work if your workspace ...84.0SMS/MMS APIAPI for sending SMS and MMS messages, managing mobile numbers, and handling keyword-based subscriptions.79.1Microsoft Azure Communication Services APIAzure Communication Services provides multichannel communication APIs that enable developers to add voice, ...76.5Microsoft Azure Sms APIThe Sms API from Microsoft Azure — 1 operation(s) for sms.76.5Leadping Sms APISends and manages SMS and MMS communications through Leadping. Use these endpoints to send messages, upload...75.4Braze SMS APIUse the Braze SMS Endpoints to manage your users phone numbers in your subscription groups.73.5GetResponse Sms APIThe Sms API from GetResponse — 1 operation(s) for sms.72.1Telesign SMS APIThe SMS API from Telesign — 3 operation(s) for sms.72.0Bloomreach Engagement APIREST API for the Bloomreach Engagement marketing automation and CDP platform, enabling customer tracking, s...71.3Vonage Sms APIThe Sms API from Vonage — 1 operation(s) for sms.71.3Zoom Phone SMS APIThe SMS API from Zoom Phone — 7 operation(s) for sms.67.9Microsoft SMS APISend SMS messages67.7Iterable SMS APISend SMS messages and manage SMS-specific delivery settings.67.5SMTP2GO SMS APISend and receive SMS messages67.4
Strong 28 Solid coverage with minor gaps
Orange Business Messaging Pro Cameroon APICameroon-specific A2P messaging platform for enterprise SMS, USSD, and rich messaging deliveries to Orange ...65.3Orange Business SMS Middle East and Africa APIA2P SMS delivery API for Orange Middle East and Africa footprint. Supports transactional, OTP, and marketin...65.3Optus SMS Suite 2FA REST APIHosted two-factor authentication API that creates an SMS one-time-code challenge for a mobile handset with ...64.0Optus SMS Suite HTTPS APILegacy GET-based HTTPS interface for SMS integration, covering message sending, delivery receipts, and inbo...64.0Optus SMS Suite SMPP APIDirect SMSC connectivity over SMPP 3.3 and 3.4 with mandatory TLS, offering high-throughput binary messagin...64.0Optus SMS Suite SOAP APIWSDL-described SOAP interface for SMS integration supporting custom source addressing, message classificati...64.0KPN Email-to-SMS APIConverts inbound email into SMS messages delivered over the KPN network. Documented on the KPN Developer po...62.4KPN SMS Campaigns APISend and schedule bulk SMS campaigns over the KPN network. Documented on the KPN Developer portal; no publi...62.4The Mobile First Company SMS APISend SMS messages to phone numbers using your Allo numbers.62.0Postscript Messages APISend promotional, transactional or conversational SMS and MMS to an existing subscriber, and read the resul...60.9Sendlane SMS APIThe SMS API from Sendlane — 3 operation(s) for sms.60.8Dotdigital SMS APIThe SMS API from Dotdigital — 7 operation(s) for sms.60.4RingCentral SMS APIThe RingCentral SMS API supports targeted and bulk SMS and MMS with deep insights and regulatory compliance...59.9Swisscom Phone Number Validation APITwo-factor authentication API that starts an SMS token validation flow against an MSISDN and then verifies ...59.0Swisscom Receive SMS APIInbound SMS API that exposes message inboxes so applications can receive texts from customers and build two...59.0Swisscom Text Messaging (SMS) APIApplication-to-person SMS sending over the Swisscom messaging infrastructure with onward delivery to 260+ o...59.0Gridspace SMS APIThe SMS API from Gridspace — 1 operation(s) for sms.58.9CloudTalk Sms APISms handling.58.2Kixie Event APIThe primary Kixie automation surface. A single POST endpoint on the apig.kixie.com gateway that dispatches ...57.6Kudosity SMS APIThe primary method of sending SMS. You can elect to pass us the recipient numbers from your database each t...57.6Wunderkind Text Message APIRESTful endpoints for delivering text messages from platforms external to the Wunderkind ecosystem (ESP, CD...57.0Verizon SMS APISMS messaging to devices56.9CONNSKILL SMS APIThe SMS API from CONNSKILL — 9 operation(s) for sms.56.6Phone Com SMS API[DEPRECATED; use Messages] Phone.com’s standard phone service lets you send and receive SMS messages using ...55.9Crescendo Lab SMS APITransactional (1-to-1) SMS send + status.55.2B3 Sms APIThe Sms API from B3 — 6 operation(s) for sms.55.0Insider SMS APIThe SMS API from Insider — 9 operation(s) for sms.54.4Northmill Sms APIThe Sms API from Northmill — 2 operation(s) for sms.54.3
Developing 16 Usable, with meaningful gaps to close
Callfire Sms APIThe Sms API from Callfire — 1 operation(s) for sms.51.0VaultRE Sms APIOperations related to SMS50.9Whoosh Programmable Messaging APIWhoosh! is Totogi's Application-to-Person (A2P) messaging API, launched in September 2023 and positioned as...50.5Artera Messaging API (MAPI)Artera's outbound SMS API, marketed to health systems and Artera Marketplace vendors as the SendMessage API...50.4TPG Telecom Messaging Hub REST APIThe SMS/MMS REST API of the Vodafone Business Messaging Hub, listed on the product page as "Access to our R...49.8Bird Phone Numbers APISearch, purchase, and manage phone numbers inventory programmatically. Supports number search by country an...48.6Telia Bulk Messaging SMPP APISMPP v3.4-style binary protocol interface into the Telia Company Bulk Messaging Platform, reached over TLS ...46.8Telia Bulk Messaging SMS Callback APIThe webhook half of Telia's Bulk Messaging REST surface. Customers must implement a Receive SMS (mobile ori...46.8Telia Bulk Messaging SMS REST APIJSON REST API for submitting mobile-terminated SMS through the Telia Company Bulk Messaging Platform, with ...46.81NCE SMS APISMS Management46.1Piknik.Spot Sms APIThe Sms API from Piknik.Spot — 1 operation(s) for sms.45.9Sendbird Business Messaging APIThe Sendbird Business Messaging API enables omnichannel customer engagement through SMS, WhatsApp, and othe...45.6StackOne Unified Marketing API (Legacy)Legacy (no longer in active development; existing functionality remains supported). StackOne Unified Market...45.0Splitit Text-to-Pay APIAPI enabling merchants to initiate Splitit installment payment flows via SMS, email, and QR codes as part o...44.6AT&T SMS APIShort Message Service operations43.9Rentberry SMS APISMS42.7
Thin 20 Limited public surface area
Plivo Message APIThe Plivo Message API sends and receives SMS, MMS, and WhatsApp messages, retrieves delivery status reports...38.9engageSPARK SMS APIThe SMS API from engageSPARK — 4 operation(s) for sms.38.4Burner APIOAuth 2.0 REST API for programmatic access to Burner line management, messaging (SMS/MMS) and configuration...37.5Appgain Notify APIThe messaging send service. A single POST /{projectId}/send endpoint whose channel is selected by the top-l...36.6RubiConnect MCP ServerHosted MCP server exposing 18 tools for messaging, templates, campaigns, agents, analytics, and media. Auth...36.5Xoxoday Reward Links APIAPI for creating and sending personalized reward links via email, SMS, or chat. Supports campaign managemen...34.1JustCall REST APIREST API for placing calls, sending SMS and MMS messages, managing contacts, phone numbers, users, and call...34.0JustCall SMS APISend and manage SMS/MMS messages.34.0microsoft-azure-communication-services SMS APIThe SMS API from microsoft-azure-communication-services — 1 operation(s) for sms.33.3Adapter Sms APIThe Sms API from Adapter — 1 operation(s) for sms.32.9Aircall Messaging APISend and receive SMS/MMS and group messages.30.3Pushbullet HTTP APIREST API for sending and managing pushes, devices, chats, channels, subscriptions, and file uploads across ...30.0Messaging APIsA portfolio of messaging APIs including SMS Middle East and Africa, Messaging Pro Cameroon, Voice as a Serv...29.4Dialpad SMS APISend and receive SMS and MMS.29.1Exotel SMS APISend SMS and retrieve message details.28.8SMSAPI SMS APIThe SMS API from SMSAPI — 1 operation(s) for sms.28.0Deutsche Telekom SMS APIProgrammatically send and receive text messages in practically every country through Deutsche Telekom's CPa...27.8Telkomsel SMS APIApplication-to-person SMS - regular and premium sends plus delivery-status polling.27.3ClickSend SMS APISend and view SMS messages.26.9Airship Email & SMS APISend email and SMS messages alongside push.26.3
Emerging 16 Early or largely undocumented
Onomondo SMS APISend SMS to devices and retrieve SMS usage.25.246elks SMS APISend and receive text messages.24.9Gupshup SMS APIBroadcast SMS to a single number or many numbers programmatically via POST /msg on the /sm surface. Note - ...23.7Hologram SMS APIThe SMS API from Hologram — 1 operation(s) for sms.23.7Engagespot Notifications APIThe Engagespot REST API enables sending multi-channel notifications to users, listing and deleting notifica...23.1Azure Communication ServicesAzure Communication Services (successor to Skype developer APIs) provides cloud-based communication APIs fo...22.8Updox Secure Conversation APIManage secure two-way patient conversations (secure text/SMS threads), with Secure Conversation Management ...22.6Africa's Talking SMS APISend single and bulk SMS and fetch inbox messages.21.9Pushwoosh Messaging APISend push notifications, email, SMS and in-app messages to user audiences.20.6Singtel CPaaS SMS APIApplication-to-person SMS sending and receiving for business applications, sold as part of the Singtel CPaa...18.6tyntec SMS APISend and receive text messages over tyntec's global A2P SMS network. Send via POST /messaging/v1/sms, retri...16.1Brand RegistrationRegisters a sender brand for A2P SMS and Verified Caller flows so that consumer handsets display branded se...14.6SMS Messaging HubA2P SMS messaging gateway for sending one-time-passcodes, alerts, and marketing messages to Vodafone subscr...14.6TranZak SMS APIREST API for sending marketing bulk SMS messages and OTP/verification codes. Supports up to 500 recipients ...13.6Naver Cloud SENS Messaging APISENS (Simple & Easy Notification Service) sends SMS, LMS, MMS, Alimtalk (KakaoTalk channel), Friend Talk, a...11.6Rakuten CPaaS SMS / Messaging APICarrier-grade SMS API for sending and receiving A2P and P2A SMS at scale on the Rakuten Mobile network, wit...11.3
Minimal 3 Almost no public developer surface
HireVue Text Recruiting / Match and ApplySMS and chat-based candidate engagement, text recruiting, and Match and Apply flows that move candidates fr...10.7SAGARIS MCP ServerRead-only MCP server over Streamable HTTP (stateless JSON mode), workspace-key bearer auth, exposing 5 GET-...7.3SAGARIS REST APIREST API for the SAGARIS Agentic Revenue OS, including the Company Brain context endpoints. Bearer/workspac...7.3

Companies reaching this through an API (35)

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

1NCE Adapter Aircall Airship Artera AT&T B3 Bloomreach Callfire CloudTalk CONNSKILL Deutsche Telekom Dialpad Gridspace HireVue Hologram HubSpot Leadping Microsoft Microsoft Azure Microsoft Skype Northmill Onomondo Orange Piknik.Spot Rentberry SAGARIS Sendlane Singtel Splitit StackOne Updox VaultRE Verizon Xoxoday

Score breakdown

Frequency
67.2
log-scaled weighted occurrences
Breadth
3.8
spread across providers
Quality lift
47.9
mean composite of providers using it
Cohesion
24.3
strength of nearest seed neighbor

Where this tag sits

171 providers carry this tag directly, and 179 counting the 3 narrower tags below — 8 more to reach.

Communications broader MMS 11 providers RCS 13 providers SMS Marketing 11 providers

Related tags

Messaging 116 co-occurrences CPaaS 45 co-occurrences Communications 66 co-occurrences Voice 67 co-occurrences WhatsApp 36 co-occurrences Email 65 co-occurrences Marketing Automation 38 co-occurrences Push Notifications 28 co-occurrences

Where this tag comes from

Api tag100
Provider tag175
Openapi tag37
Openapi op tag103

Markets provisional

Kin Score markets whose measured providers carry this tag. Share is the fraction of the market's measured providers that carry it — it describes the market, not this tag.

MarketShare of the market's providers
Communications (CPaaS)76%
Telecom Network APIs (CAMARA)68%
Martech and Customer Data Platforms39%
HubSpot App Marketplace (CRM add-ons, outbound, performance marketing, chat)21%
Commerce and CRM20%

Cohort brief

Auto-generated

The 169 providers in the APIs.io catalog tagged SMS, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
169
of 171 in the catalog
Mean Kin Score
46.1
+23.9 vs catalog 22.2
Mean Agent Readiness
30.9
+18.9 vs catalog 12
Spread
0–91.6
median 50.1 · σ 21.4
How the 169 split by band
Exemplar 31Strong 40Developing 36Thin 26Emerging 22Minimal 14
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 46.1 17.2 +28.9 169
Developer Ergonomics 49.3 23.2 +26.1 169
Operational Transparency 39 13 +26 169
Access Clarity 47.5 23.9 +23.6 169
Discoverability 68.5 57.9 +10.6 169
Contract Governance 13.2 6.5 +6.7 169

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) 31% 13% +18
MCP server (first-party) 32% 12% +20
Agent Skills 0% 0% 0
OAuth scopes 31% 11% +20
Security 99% 98% +1
Arazzo workflows 6% 2% +4
Governance rules 32% 16% +16

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 Twilio 91.6
  2. 2 Telnyx 86.1
  3. 3 Infobip 84.9
  4. 4 Customer.io 84.1
  5. 5 Brevo 80.8
  6. 6 Salesforce Marketing Cloud 79.1
  7. 7 Amazon Pinpoint 77.8
  8. 8 Mailchimp 76.7
  9. 9 Boom Ai 75.6
  10. 10 OneSignal 74.7
Top by Agent Readiness
  1. 1 Telnyx 78.1
  2. 2 OneSignal 71.3
  3. 3 Customer.io 69.9
  4. 4 MoEngage 66.2
  5. 5 Boom Ai 63.9
  6. 6 Bird 61.5
  7. 7 Infobip 61.3
  8. 8 Cordial 61.2
  9. 9 Close 60
  10. 10 Novu 58.4
All 171 members of this roster resolve to a provider in the catalog; 169 carry a score (99%). The figures above describe the scored members only.
Coverage caveat. 111 of 169 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 24 October 2026, across 31984 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

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

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