established · 1.9

Telephony

Score 27.9 / 100 69 providers 49 APIs Search apis.io →
Variants seen in the corpus: Telephonytelephony

Providers using this tag (69)

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

Exemplar 6 Complete, well-documented, and agent-ready
SalesforceFortune 500Artificial IntelligenceAnalyticsCloud294 APIs83.3RegalArtificial IntelligenceAI AgentsVoice AIContact Center10 APIs79.6VapiArtificial IntelligenceVoice AIVoice AgentsConversational AI15 APIs75.1LeadpingLead ManagementSales & marketing automationSMS MessagingA2P 10DLC29 APIs72.2VesselCRMChatDialerEmbedded Integrations20 APIs72.18x8TelecommunicationsUnited StatesCPaaSUCaaS36 APIs67.1
Strong 19 Solid coverage with minor gaps
WeaveCompanyCommunicationsMessagingPayments9 APIs65.5GridspaceCompanyVoice AIConversational AIVoice Agents3 APIs65.3ServiceNowAutomationCloud ServicesDigital WorkflowsEnterprise Platform63 APIs64.8SyllableCompanyArtificial IntelligenceAI AgentsVoice41 APIs64.8Apollo.ioSales IntelligenceProspectingEngagementB2B Data14 APIs64.2SwisscomTelecommunicationsSwitzerlandMobile Network OperatorBroadband13 APIs63.8SynthflowVoiceVoice AgentsNo-Code8 APIs61.8KixieCompanySales EngagementVoice3 APIs60.5The Mobile First CompanyCompanyCommunicationsVoice13 APIs59.1CloudTalkCompanyCommunicationsVoiceVoIP13 APIs59.0Neutrino APIData ValidationData ToolsCommunications7 APIs56.9DailyVideoAudioWebRTCReal-Time Communication13 APIs56.7CallRailCall TrackingConversation IntelligenceMarketing AttributionLead Tracking4 APIs56.4ThoughtlyVoice AIChat AIConversational AIAI Agents4 APIs56.0Bright PatternCompanyContact CenterCCaaSCustomer Experience14 APIs55.7BandwidthCommunicationsCPaaSVoiceMessaging18 APIs55.3OpenPhoneCompanyCommunicationsVoiceSMS9 APIs55.0VOYGRCompanyLocation IntelligencePOI DataData Enrichment2 APIs55.0VoiceGenieCompanyVoice AIConversational AISales Automation2 APIs54.3
Developing 17 Usable, with meaningful gaps to close
GenesysCompanySoftwareContact CenterCustomer Experience87 APIs52.7ReplicantCompanyContact CenterConversational AICustomer Service1 API52.6SpekoVoiceVoice AISpeech-to-TextText-to-Speech4 APIs52.2NextivaCompanyCommunicationsVoiceContact Center5 APIs51.9InvocaCompanyArtificial IntelligenceCall TrackingConversation Intelligence1 API50.7Phone ComCompanyVoIPBusiness Phone1 API50.7FixieCompanyVoice AIConversational AIReal-Time14 APIs49.8OrumCompanyArtificial IntelligenceSalesSales Engagement49.0BolnaCompanyArtificial IntelligenceVoice AIConversational AI1 API48.8PhonelyArtificial IntelligenceVoice AIVoice AgentsConversational AI2 APIs48.7WebexCallingCollaborationCommunicationsEnterprise193 APIs48.2NetomiCompanyArtificial IntelligenceAgentic AICustomer Experience2 APIs47.8Salesforce Service CloudCase ManagementCRMCustomer ServiceHelp Desk18 APIs47.6PhonicCompanyArtificial IntelligenceVoice AIConversational AI10 APIs45.0HappyrobotAI AgentsAgent OrchestrationVoice AIConversational AI6 APIs43.5AgentPhoneCompanyPhone NumbersSMS13 APIs43.1BurnerCompanyPhone NumbersSMSMMS1 API39.4
Thin 18 Limited public surface area
RainbowCommunicationsCPaaSChatVoice7 APIs39.1VocodeVoice AIVoice AgentsConversational AI9 APIs37.6PipecatArtificial IntelligenceVoiceMulti-ModalAgents7 APIs36.8TelefonieCall RecordingCPaaSMessagingNumber Provisioning6 APIs36.0TelefonCall RecordingCommunicationsCPaaSGlobal Coverage7 APIs35.1TelefoonBelgiumCPaaSEU Data ResidencyEurope5 APIs35.0JustCallVoiceSMSCloud PhoneContact Center4 APIs34.8WazoVoIPUnified CommunicationsUCaaS14 APIs34.6Bitrix24CRMCollaborationProject ManagementTask36 APIs33.4TenfoldCompanyCTIContact Center8 APIs33.0Sarj AI Developer APIVoice AIVoice AgentsConversational AIArabic AI27 APIs32.9LiveKitReal-TimeWebRTCAudioVideo6 APIs32.4Cisco Voice PortalContact CenterIVRVoice24 APIs32.2DealerSocketAutomotiveDealershipCRMDMS4 APIs30.0Salesforce Service Cloud APIsCloudCRMCustomer ServiceEnterprise8 APIs29.8Samora AICompanyVoice AgentsConversational AIVoice AI3 APIs29.0NewVoiceMediaCompanyCloudContact CenterCCaaS1 API27.9TalkdeskContact CenterCCaaSVoiceWebhook1 API26.8
Emerging 5 Early or largely undocumented
TPP (SystmOne)HealthcareUnited KingdomEHREMR6 APIs23.1Cisco Collaboration Hybrid SolutionsCallingCollaborationHybrid CloudMeetings12 APIs19.3ParloaAgentsArtificial IntelligenceCall CenterCCaaS2 APIs19.2BesideCompanySoftwareCommunicationsVoice16.1Callab AIVoice AIConversational AIContact Center1 API15.2
Minimal 4 Almost no public developer surface
DialupCompanyVoiceSocialCommunications9.2Chimelabs Holdings PTY LTDCompanyArtificial IntelligenceVoiceReceptionist8.5VonBoxCompanyCommunicationsMessaging6.1Brooktrout TechnologyCompanyFaxVoice5.0

APIs with this tag (49)

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 6 Complete, well-documented, and agent-ready
Salesforce Service Cloud Voice APIThe Salesforce Service Cloud Voice API provides Telephony Integration REST API and Voice Toolkit API for pr...83.3Regal Call Handoffs APIRetrieve routing instructions and call metadata after a Regal AI voice agent leaves a live call. The respon...79.6Leadping Telephony APIProvides shared authentication and bootstrap data for Leadping telephony clients. Use this endpoint to obta...72.2Vessel Dialer Unified APIThe Vessel Dialer Unified API normalizes telephony/dialer objects across Aircall, Dialpad and RingCentral u...72.18x8 Administration - Phone Number Management API8x8 Administration Phone Number Management API for listing and assigning telephone numbers within an 8x8 te...67.18x8 Administration - Ring Group Management API8x8 Administration Ring Group Management API for creating and managing ring groups and their members.67.1
Strong 7 Solid coverage with minor gaps
ServiceNow Openframe APIThe ServiceNow Openframe API provides REST endpoints that enable Contact Center as a Service (CCaaS) provid...64.8ServiceNow Voice Interaction Resource APIThe ServiceNow Voice Interaction Resource API provides REST endpoints for integrating telephony and voice s...64.8Apollo.io Calls APIPhone-call records — log, search and update dialer activity. 3 operation(s) from the published Apollo OpenAPI.64.2Swisscom Voice Mail APILegacy Voice API for listing and retrieving recent voicemail messages for a Swisscom MSISDN, secured by OAu...63.8Swisscom Voice VoIP APILegacy Voice API cluster for controlling a Swisscom VoIP subscriber — placing and listing calls, managing c...63.8Neutrino API Telephony APIAPIs for live telephony56.9Voygr Calls APIProgrammatic outbound phone calls executed by an AI voice agent. Submit a task either as a plain-language b...55.0
Developing 12 Usable, with meaningful gaps to close
Genesys Telephony APITelephony providers and configuration52.7Replicant Outbound APIPlaces outbound AI voice calls and SMS messages through Replicant against a pre-configured campaign, and no...52.6Speko Telephony APIThe Telephony API from Speko — 22 operation(s) for telephony.52.2Invoca APIInvoca's date-versioned REST developer platform covering call transactions, signal reporting, call ingestio...50.7phone-com-apiPhone.com v4 ("Phoenix") JSON REST API for managing accounts, extensions, devices, phone numbers, call rout...50.7Bolna Voice AI APIREST API for building and operating conversational voice AI agents — create and manage agents, place outbou...48.8Phonely Agents APIManage Phonely voice agents programmatically. Retrieve a single agent or list all agents for a user, and up...48.7Webex Telephony APIThe Telephony API from Webex — 1 operation(s) for telephony.48.2Service Cloud Voice Telephony Integration APIREST API for integrating telephony systems with Service Cloud Voice, enabling programmatic management of vo...47.6Happyrobot Platform API v1The legacy v1 read API, described by an OpenAPI 3.0.2 document at /api/v1/openapi.json. Ten read-only opera...43.5Happyrobot Public APIThe current Happyrobot Public API (v2) — 205 operations over 162 paths, described by a live OpenAPI 3.0.3 d...43.5Burner APIOAuth 2.0 REST API for programmatic access to Burner line management, messaging (SMS/MMS) and configuration...39.4
Thin 21 Limited public surface area
Transports (WebRTC/WebSocket)Realtime media transport layer of the framework. Bidirectional audio, video, and data flow over Daily WebRT...36.8JustCall REST APIREST API for placing calls, sending SMS and MMS messages, managing contacts, phone numbers, users, and call...34.8Wazo Asterisk Manager Interface API (wazo-amid)A thin REST facade over the Asterisk Manager Interface. Executes AMI actions and Asterisk CLI commands, and...34.6Wazo Authentication API (wazo-auth)Authentication and authorisation service for the Wazo Platform. Issues and validates X-Auth-Token tokens (u...34.6Wazo Call Centre Agent API (wazo-agentd)Call-centre agent state API. Logs agents in and out of queues by agent id, agent number or extension, pause...34.6Wazo Call Control / Application API (wazo-calld)Runtime call control for the Wazo Platform. Originate, answer, hold, mute, transfer, relocate, record and h...34.6Wazo Call Detail Records API (wazo-call-logd)Call Detail Record and contact-centre reporting API. Retrieves and exports CDRs (JSON, CSV) for a tenant or...34.6Wazo Configuration API (wazo-confd)The configuration API for a Wazo stack and the largest of its microservice contracts. Manages users, lines,...34.6Wazo Directory & Contacts API (wazo-dird)Directory lookup, reverse lookup and personal-contact service. Aggregates multiple directory backends (CSV,...34.6Wazo Initial Setup API (wazo-setupd)Initial system setup API. Performs the one-time bootstrap of a freshly installed Wazo stack — engine config...34.6Wazo Phone Directory & Service API (wazo-phoned)Directory and service endpoints consumed directly by desk phones. Serves vendor-specific XML/HTML phone dir...34.6Wazo Phone Provisioning API (wazo-provd)Phone auto-provisioning service. Manages device plugins, configuration templates, device registrations, DHC...34.6Wazo Plugin Management API (wazo-plugind)Plugin management microservice. Installs, upgrades and uninstalls Wazo plugins from a git or market source,...34.6Wazo Presence & Chat API (wazo-chatd)Presence and chat microservice. Tracks user, line and refresh-token presence (including Microsoft Teams pre...34.6Wazo Webhooks API (wazo-webhookd)Webhook subscription service. Connects to the Wazo event bus and relays platform events to external HTTP en...34.6Wazo Websocket Event Stream (wazo-websocketd)WebSocket gateway onto the Wazo internal event bus. An authenticated client subscribes to named platform ev...34.6Bitrix24 REST APITenant-scoped REST API for managing CRM entities, deals, leads, tasks, calendars, telephony, disk files, us...33.4Bitrix24 Telephony APIThe Telephony API from Bitrix24 — 30 operation(s) for telephony.33.4LiveKit SIP (Telephony) APISIP integration for inbound and outbound PSTN calls bridged into LiveKit rooms.32.4DealerSocket CTI & Activity Logging APIInbound call-tracking and activity-logging surface. CTI Direct Post logs inbound and outbound call informat...30.0Service Cloud CTI APIComputer Telephony Integration API for connecting phone systems with Service Cloud.29.8
Emerging 3 Early or largely undocumented
SystmOne Telephony APITPP's Telephony API for integrating telephony systems with SystmOne, supporting computer-telephony workflow...23.1Webex Calling APICloud calling capabilities including call control, dial plans, voicemail, voice portals, queues, hunt group...19.3Callab AI APICallab AI's REST API, documented at docs.callab.ai/api-reference, is organized around REST principles with ...15.2

Score breakdown

Frequency
56.2
log-scaled weighted occurrences
Breadth
1.9
spread across providers
Quality lift
55.2
mean composite of providers using it
Cohesion
15.6
strength of nearest seed neighbor

Related tags

Calls 22 co-occurrences Contact Center 26 co-occurrences Voice 36 co-occurrences Voice Agents 12 co-occurrences Call Center 9 co-occurrences Phone Numbers 11 co-occurrences CCaaS 9 co-occurrences Voice AI 17 co-occurrences

Where this tag comes from

Api tag49
Provider tag52
Openapi tag5
Openapi op tag43

Cohort brief

Auto-generated

The 69 providers in the APIs.io catalog tagged Telephony, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
69
all scored
Mean Kin Score
45.2
+24.5 vs catalog 20.7
Mean Agent Readiness
27.9
+18.2 vs catalog 9.7
Spread
5–83.3
median 48.7 · σ 17.9
How the 69 split by band
Exemplar 6Strong 19Developing 17Thin 18Emerging 5Minimal 4
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 49.9 17.5 +32.4 69
Developer Ergonomics 44.5 17.9 +26.6 69
Access Clarity 44.1 22.3 +21.8 69
Operational Transparency 31.5 11.3 +20.2 69
Discoverability 75.1 60.4 +14.7 69
Contract Governance 20.3 6.4 +13.9 69

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) 51% 16% +35
MCP server (first-party) 26% 7% +19
Agent Skills 0% 0% 0
OAuth scopes 25% 9% +16
Security 99% 88% +11
Arazzo workflows 6% 2% +4
Governance rules 25% 13% +12

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 Salesforce 83.3
  2. 2 Regal 79.6
  3. 3 Vapi 75.1
  4. 4 Leadping 72.2
  5. 5 Vessel 72.1
  6. 6 8x8 67.1
  7. 7 Weave 65.5
  8. 8 Gridspace 65.3
  9. 9 ServiceNow 64.8
  10. 10 Syllable 64.8
Top by Agent Readiness
  1. 1 Sarj AI Developer API 60.4
  2. 2 Apollo.io 55.3
  3. 3 Genesys 55.1
  4. 4 The Mobile First Company 52.9
  5. 5 Salesforce 52.2
  6. 6 Happyrobot 51.6
  7. 7 AgentPhone 48.9
  8. 8 Swisscom 48
  9. 9 Regal 46.8
  10. 10 Webex 43.5
All 69 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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  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
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  • 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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  -H "X-API-Key: $APIS_IO_KEY"

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