established · 0.9

CPaaS

Score 27.7 / 100 51 providers 41 APIs Search apis.io →

Providers using this tag (51)

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

Exemplar 4 Complete, well-documented, and agent-ready
RegalArtificial IntelligenceAI AgentsVoice AIContact Center10 APIs79.6LeadpingLead ManagementSales & marketing automationSMS MessagingA2P 10DLC29 APIs72.2InfobipTelecommunicationsCroatiaMessaging47 APIs71.08x8TelecommunicationsUnited StatesUCaaS36 APIs67.1
Strong 13 Solid coverage with minor gaps
SwisscomTelecommunicationsSwitzerlandMobile Network OperatorBroadband13 APIs63.8DotdigitalMarketing AutomationEmail MarketingSMSMMS4 APIs63.4KPNTelecommunicationsNetherlandsMobile Network OperatorBroadband38 APIs61.9UnifonicCompanyEnterpriseMessaging8 APIs59.7KudosityMessagingSMSMMSRCS2 APIs59.1Reliance JioTelecommunicationsIndiaMobile Network OperatorNetwork APIs4 APIs58.4KaleyraMessagingSMSWhatsApp6 APIs57.4Route MobileTelecommunicationsIndiaMessaging6 APIs57.2SinchCommunicationsMessagingSMSVoice35 APIs56.5BandwidthCommunicationsVoiceMessaging18 APIs55.3Telia CompanyTelecommunicationsSwedenNordicsBaltics24 APIs55.2ZavuCompanyMessagingSMSWhatsApp21 APIs55.2OpenPhoneCompanyCommunicationsVoiceSMS9 APIs55.0
Developing 10 Usable, with meaningful gaps to close
Bharti AirtelTelecommunicationsIndiaMobile Network OperatorNetwork APIs5 APIs53.9GenesysCompanySoftwareContact CenterCustomer Experience87 APIs52.7SyniverseTelecommunicationsUnited StatesMessaging12 APIs52.3NfonCompanyTelecomCloud TelephonyUCaaS52 APIs52.2TPG TelecomTelecommunicationsAustraliaMobile Network OperatorBroadband2 APIs51.3Tata CommunicationsTelecommunicationsIndiaWholesale Carrier6 APIs49.4TotogiTelecommunicationsUnited StatesBSSOSS2 APIs44.2PlivoCommunicationsVoiceSMS24 APIs44.0MirrorFly Messages APICommunicationsChat / Messaging APIVoice API1 API40.3Sinch Verification APINumber VerificationPhone VerificationOTP2FA3 APIs39.7
Thin 17 Limited public surface area
RainbowCommunicationsChatVoice7 APIs39.1SMSAPIMessagingSMSMMSVoice11 APIs38.6TelkomselTelecommunicationsIndonesiaSMSMobile Network8 APIs37.9ClickSendCommunicationsSMSMMSVoice10 APIs37.5MessenteMessagingSMSViber11 APIs36.6TelefonieCall RecordingMessagingNumber Provisioning6 APIs36.0TextmagicSMSText MessagingMessagingCommunications11 APIs36.0TelefonCall RecordingCommunicationsGlobal Coverage7 APIs35.1TelefoonBelgiumEU Data ResidencyEurope5 APIs35.0Vonage Video APIVideoWebRTCLive StreamingReal-Time Communications9 APIs35.0AlianzaCompanyCommunicationsCloud CommunicationsVoice60 APIs34.3TelnyxCommunicationsVoiceSMS168 APIs34.046elksSMSMMSVoice5 APIs33.4engageSPARKCompanyMessagingSMSVoice7 APIs31.4VapiArtificial IntelligenceVoiceAgentsReal-Time16 APIs30.9ExotelCloud TelephonyVoiceSMSIndia6 APIs29.9Deutsche TelekomTelecommunicationsTelcoMobile Network Operator50 APIs27.6
Emerging 4 Early or largely undocumented
tyntecNumber VerificationSMSWhatsApp7 APIs24.8GupshupMessagingWhatsAppConversational AI6 APIs23.9BICSNumber VerificationTelecomMobile IdentityAnti-Fraud24 APIs22.2SingtelTelecommunicationsSingaporeMobile Network OperatorNetwork APIs7 APIs19.8
Minimal 3 Almost no public developer surface
RealNetworksCompanyFacial RecognitionComputer-VisionMessaging Security9.4Rakuten MobileTelecommunicationsMobile Network OperatorCarrier5G3 APIs7.9Custom Chat API | MirrorFlyChat APIMessagingVoIP1 API1.5

APIs with this tag (41)

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 11 Complete, well-documented, and agent-ready
8x8 CPaaS Voice WebhooksSubaccount-level HTTP POST callbacks emitted by the 8x8 CPaaS voice platform: VSS (Voice Session Summary) f...67.1Automation API8x8 Automation API for defining, launching and managing communication workflow definitions and workflow ins...67.1Business Messaging API8x8 Business Messaging (Chat Apps) API for sending and receiving rich messages over WhatsApp Business, RCS,...67.1Configuration API8x8 Connect Configuration API for subaccount-level configuration of the messaging platform.67.1Contacts API8x8 Contacts API for managing contacts and contact groups used as recipients across the Connect messaging a...67.1Number Lookup API8x8 Number Lookup API that validates phone numbers and returns carrier, portability and reachability data f...67.1Number Masking API8x8 Number Masking API that bridges two parties through virtual numbers so neither participant sees the oth...67.1SMS API8x8 Connect SMS API for single and batch A2P SMS delivery worldwide, with sender ID handling, encoding cont...67.1Verification API8x8 Verification API for generating and validating SMS- and voice-based one-time passcodes for mobile numbe...67.1Video Interaction API8x8 Video Interaction API for creating and managing agent-to-customer video sessions initiated from a messa...67.1Voice API8x8 Connect Voice API for programmable outbound and inbound calling, callflows, voice messaging and IVR ses...67.1
Strong 12 Solid coverage with minor gaps
Swisscom Receive SMS APIInbound SMS API that exposes message inboxes so applications can receive texts from customers and build two...63.8Swisscom Text Messaging (SMS) APIApplication-to-person SMS sending over the Swisscom messaging infrastructure with onward delivery to 260+ o...63.8Apidaze Voice CPaaS API (via KPN)This REST API exposes actions that help your apps to interact with APIdaze’s Telco platform in mulitples wa...61.9Vonage Messages API (via KPN)Encapsulates multiple APIs to interact with our various channels such as WhatsApp Business, SMS, MMS, Viber...61.9Vonage Number Insight API (via KPN)Vonage's Number Insight API provides details about the validity, reachability and roaming status of a phone...61.9Vonage Phone Numbers API (via KPN)The Numbers API lets you manage your numbers and buy new virtual numbers for use with Vonage's APIs. ## Pre...61.9Vonage SMS API (via KPN)Vonage's SMS API allows you to send and receive text messages to users around the globe through simple REST...61.9Vonage Verify API (via KPN)Verify API is to Verify if a phone number is valid, reachable, and accessible by the user. Verification mes...61.9Vonage Voice API (via KPN)The Voice API lets you create outboud calls, control in progress calls and get information about current an...61.9Transmit Message APICurrent v2 REST API covering SMS, MMS, WhatsApp and RCS, plus API-managed webhooks with event-type filterin...59.1Transmit SMS APIClassic v1 REST API — fully supported, not deprecated. SMS sending with single-request multi-recipient batc...59.1Telia Bulk Messaging SMS REST APIJSON REST API for submitting mobile-terminated SMS through the Telia Company Bulk Messaging Platform, with ...55.2
Developing 6 Usable, with meaningful gaps to close
Airtel IQ Reporting APIThe Call Detail Record (CDR) reporting surface of Airtel IQ. Returns detailed per-call records — time, date...53.9Airtel IQ SMS APIThe messaging half of Airtel IQ, Airtel's network-embedded CPaaS suite. Sends single, bulk, CSV-batch and c...53.9TPG Telecom Messaging Hub Contacts APIContacts Management API for the Vodafone Business Messaging Hub, providing CRUD over contacts, lists and cu...51.3TPG 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...51.3Whoosh Programmable Messaging APIWhoosh! is Totogi's Application-to-Person (A2P) messaging API, launched in September 2023 and positioned as...44.2MirrorFly Chat Platform APIREST/HTTP API for chat and messaging (User and Admin APIs) with JSON payloads. Production base URL is tenan...40.3
Thin 6 Limited public surface area
Deutsche Telekom Conversational Connect APITransform customer communications with intelligent conversational marketing across messaging channels, inte...27.6Deutsche Telekom Reports APIProgrammatic access to communications usage data, delivery reports, and billing breakdowns across the CPaaS...27.6Deutsche Telekom Rich Communication Services APIImprove customer experience using Rich Communication Services for branded, interactive messaging that exten...27.6Deutsche Telekom SMS APIProgrammatically send and receive text messages in practically every country through Deutsche Telekom's CPa...27.6Deutsche Telekom Video APIBring people together globally through fully programmable, customizable, live video sessions embedded in ap...27.6Deutsche Telekom Voice APIDeliver high-quality voice experiences over the low-latency, feature-rich, global Deutsche Telekom network ...27.6
Emerging 2 Early or largely undocumented
Singtel CPaaS SMS APIApplication-to-person SMS sending and receiving for business applications, sold as part of the Singtel CPaa...19.8Singtel CPaaS Voice APIProgrammable voice / VoIP calling embedded into business applications, sold as part of the Singtel CPaaS po...19.8
Minimal 4 Almost no public developer surface
Rakuten CPaaS Confirm (OTP) APIOne-time PIN delivery and verification API for two-factor authentication and transaction confirmation, with...7.9Rakuten CPaaS Short URL APILink shortening and analytics API for CPaaS campaigns. Supports create / retrieve / update / list / delete ...7.9Rakuten CPaaS SMS / Messaging APICarrier-grade SMS API for sending and receiving A2P and P2A SMS at scale on the Rakuten Mobile network, wit...7.9MirrorFly Chat Platform APIToken-authenticated REST API for building in-app chat, split into User APIs and Admin APIs (users, contacts...1.5

Score breakdown

Frequency
52.6
log-scaled weighted occurrences
Breadth
1.4
spread across providers
Quality lift
53.7
mean composite of providers using it
Cohesion
22.8
strength of nearest seed neighbor

Related tags

SMS 40 co-occurrences RCS 9 co-occurrences MMS 9 co-occurrences Phone Numbers 11 co-occurrences 2FA 8 co-occurrences OTP 10 co-occurrences Voice 33 co-occurrences Mobile Network Operator 9 co-occurrences

Where this tag comes from

Provider tag46
Api tag41

Cohort brief

Auto-generated

The 51 providers in the APIs.io catalog tagged CPaaS, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
51
all scored
Mean Kin Score
43.6
+22.9 vs catalog 20.7
Mean Agent Readiness
27
+17.3 vs catalog 9.7
Spread
1.5–79.6
median 40.3 · σ 16.8
How the 51 split by band
Exemplar 4Strong 13Developing 10Thin 17Emerging 4Minimal 3
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 51.6 17.5 +34.1 51
Operational Transparency 32.9 11.3 +21.6 51
Developer Ergonomics 38.6 17.9 +20.7 51
Access Clarity 38.1 22.3 +15.8 51
Discoverability 75.1 60.4 +14.7 51
Contract Governance 15 6.4 +8.6 51

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) 49% 16% +33
MCP server (first-party) 14% 7% +7
Agent Skills 0% 0% 0
OAuth scopes 27% 9% +18
Security 98% 88% +10
Arazzo workflows 0% 2% -2
Governance rules 20% 13% +7

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 Regal 79.6
  2. 2 Leadping 72.2
  3. 3 Infobip 71
  4. 4 8x8 67.1
  5. 5 Swisscom 63.8
  6. 6 Dotdigital 63.4
  7. 7 KPN 61.9
  8. 8 Unifonic 59.7
  9. 9 Kudosity 59.1
  10. 10 Reliance Jio 58.4
Top by Agent Readiness
  1. 1 Genesys 55.1
  2. 2 Telia Company 48.1
  3. 3 Swisscom 48
  4. 4 Infobip 47.7
  5. 5 Regal 46.8
  6. 6 8x8 43.3
  7. 7 Dotdigital 41.8
  8. 8 Kudosity 41.5
  9. 9 KPN 40.8
  10. 10 Zavu 40.8
All 51 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 25 August 2026, across 26891 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.

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Tools for tags

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  • find_tagsBrowse and filter every tag in the catalog.
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  • 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.
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