Vonage website screenshot

Vonage

Vonage (part of Ericsson) provides cloud communications APIs for voice, SMS, messaging, video, and verification. The Vonage API platform enables businesses to embed communication capabilities into applications including voice calls, SMS, multi-channel messaging (WhatsApp, Messenger, Viber, RCS), video conferencing, and two-factor authentication. SDKs are available for Node.js, Python, Java, PHP, Ruby, .NET, Go, and Kotlin.

Vonage publishes 6 APIs on the APIs.io network, including Applications API, Messages API, Numbers API, and 3 more. Tagged areas include Communication, Messaging, Telecommunications, Video Conferencing, and Voice.

The Vonage catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 3 Spectral governance rulesets.

Vonage’s developer surface includes authentication, developer portal, documentation, support, engineering blog, CLI, pricing, and 20 more developer resources.

59.7/100 strong ▼ -5.6 Agent 47/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessPaidSelf serve
9 APIs 1 MCP Servers 16 Features
CommunicationMessagingTelecommunicationsVideo ConferencingVoiceSMSVerification

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 59.7/100 · strong
Contract Quality 18.6 / 25
Developer Ergonomics 13.9 / 20
Commercial Clarity 12.1 / 20
Operational Transparency 4.8 / 13
Governance 5.7 / 12
Discoverability 7.4 / 10
Agent readiness — 47/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/vonage: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 9

Individual APIs this provider publishes, each with its own machine-readable definition.

Vonage Conversations API

Build multi-channel conversation experiences with threading across SMS, voice, and messaging channels. Manage members, events, and legs within conversation contexts.

Vonage Reports API

Generate historical reports and lookup messages sent through your Vonage account. Access delivery receipts, call records, and usage data.

Vonage Video API

Embed live, interactive video into web, mobile, and desktop applications using WebRTC. Supports sessions, tokens, broadcasting, recording, and SIP interconnect.

Vonage Applications API

Configure Vonage application settings and webhooks

Vonage Messages API

Multi-channel messaging via SMS, WhatsApp, Messenger, Viber, MMS, RCS

Vonage Numbers API

Provision and manage virtual phone numbers

Vonage SMS API

Send and receive SMS messages

Vonage Verify API

Two-factor authentication and phone verification

Vonage Voice API

Create and control voice calls

Scroll for all 9

Postman Collections 6

Ready-to-run Postman collections for exercising this provider's APIs.

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Vonage Communications API

OPEN COLLECTION

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

MCP Server

MCP SERVER

GraphQL 1

GraphQL schemas published by this provider.

Vonage GraphQL Schema

This document describes a conceptual GraphQL schema for the Vonage Communications API platform (part of Ericsson). Vonage provides cloud communications APIs spanning Voice, SMS,...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Vonage Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Vonage Rate Limits

4 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Features 16

Notable capabilities this provider offers.

Pay-As-You-Go: no platform fee, per-message/minute pricing
US SMS outbound: $0.00809/message
US SMS inbound: $0.00649/message
US Voice outbound (local): $0.00798/minute
US Voice inbound: $0.0085/minute
Verify API for OTP across SMS/Voice/WhatsApp channels
Messages API for SMS, MMS, WhatsApp, Viber, Facebook Messenger
Voice API with TwiML-style NCCO scripting
Number Insight for line type / carrier lookup
Network APIs (CAMARA — SIM Swap, Number Verify, Location)
Default 30 msg/sec for SMS and Verify
Vonage Video API (formerly OpenTok)
Conversation API for chat/voice/video apps
Webhooks for delivery receipts and inbound events
JWT and API key/secret auth
Carrier surcharges add 50-100% over base rates

Scroll for all 16

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Vonage Voice WebSocket API

AsyncAPI 2.6 description of Vonage's publicly-documented WebSocket surface. The only Vonage product whose realtime protocol is publicly specified frame-by-frame is the Voice API...

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Vonage Context

0 classes · 19 properties

JSON-LD

Spectral Rules 3

Spectral governance rulesets for linting and validating these APIs.

Vonage API Rules

5 rules · 1 errors 3 warnings 1 info

SPECTRAL

Vonage API Rules

5 rules · 4 warnings 1 info

SPECTRAL

Vonage API Rules

11 rules · 1 errors 4 warnings 6 info

SPECTRAL

JSON Schema 16

Standalone JSON Schema definitions for this provider's data models.

Application

4 properties

JSON SCHEMA

ApplicationList

5 properties

JSON SCHEMA

ApplicationRequest

2 properties

JSON SCHEMA

AvailableNumberList

2 properties

JSON SCHEMA

Vonage Call

12 properties

JSON SCHEMA

CallList

4 properties

JSON SCHEMA

CreateCallRequest

6 properties

JSON SCHEMA

Vonage Message

13 properties

JSON SCHEMA

MessageRequest

6 properties

JSON SCHEMA

MessageResponse

1 properties

JSON SCHEMA

Number

5 properties

JSON SCHEMA

NumberList

2 properties

JSON SCHEMA

SmsResponse

2 properties

JSON SCHEMA

VerifyCheckResponse

5 properties

JSON SCHEMA

VerifyResponse

3 properties

JSON SCHEMA

VerifySearchResponse

12 properties

JSON SCHEMA

Scroll for all 16

JSON Structure 2

JSON Structure definitions describing this provider's data shapes.

Vonage Message Structure

0 properties

JSON STRUCTURE

Vonage Structure

0 properties

JSON STRUCTURE

Examples 4

Example request and response payloads for these APIs.

Vonage Createcall Example

4 fields

EXAMPLE

Vonage Sendsms Example

4 fields

EXAMPLE

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Vonage Authentication

http · 2 schemes

SECURITY

Vonage Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Vonage Vulnerability Disclosure

disclosure policy published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Vonage Agentic Access

25 operations · 18 acting · 3 human-in-the-loop

25 operations · 18 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

Build 11

SDKs, sample code, and the tooling you integrate with

Scroll for all 11

Access & Security 3

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: vonage
url: https://raw.githubusercontent.com/api-evangelist/vonage/refs/heads/main/apis.yml
apis:
- aid: vonage:vonage-conversations-api
  name: Vonage Conversations API
  tags:
  - Communication
  - Conversations
  - Messaging
  - Real-Time
  humanURL: https://developer.vonage.com/en/api/conversation
  baseURL: https://api.nexmo.com/v1
  description: Build multi-channel conversation experiences with threading across SMS, voice, and messaging channels. Manage
    members, events, and legs within conversation contexts.
  properties:
  - url: https://developer.vonage.com/en/api/conversation
    type: Documentation
  - url: https://api.nexmo.com/v1
    type: BaseURL
- aid: vonage:vonage-reports-api
  name: Vonage Reports API
  tags:
  - Analytics
  - Communication
  - Reporting
  humanURL: https://developer.vonage.com/en/reports/overview
  baseURL: https://api.nexmo.com/v2/reports
  description: Generate historical reports and lookup messages sent through your Vonage account. Access delivery receipts,
    call records, and usage data.
  properties:
  - url: https://developer.vonage.com/en/reports/overview
    type: Documentation
  - url: https://api.nexmo.com/v2/reports
    type: BaseURL
- aid: vonage:vonage-video-api
  name: Vonage Video API
  tags:
  - Communication
  - Telecommunications
  - Video
  - WebRTC
  humanURL: https://developer.vonage.com/en/video/overview
  baseURL: https://api.opentok.com
  description: Embed live, interactive video into web, mobile, and desktop applications using WebRTC. Supports sessions, tokens,
    broadcasting, recording, and SIP interconnect.
  properties:
  - url: https://developer.vonage.com/en/video/overview
    type: Documentation
  - url: https://tokbox.com/developer/
    type: Portal
  - url: https://api.opentok.com
    type: BaseURL
- aid: vonage:vonage-applications-api
  name: Vonage Applications API
  description: Configure Vonage application settings and webhooks
  humanURL: https://developer.vonage.com/en/api/sms
  baseURL: https://rest.nexmo.com
  tags:
  - Applications
  properties:
  - type: OpenAPI
    url: openapi/vonage-applications-api-openapi.yml
  - type: Documentation
    url: https://developer.vonage.com/en/api/sms
  - type: BaseURL
    url: https://rest.nexmo.com
  - type: GraphQL
    url: graphql/vonage-graphql.md
  - type: Documentation
    url: https://developer.vonage.com/en/api/voice
  - type: BaseURL
    url: https://api.nexmo.com/v1
  - type: AsyncAPI
    url: https://raw.githubusercontent.com/api-evangelist/vonage/refs/heads/main/asyncapi/vonage-asyncapi.yml
  - type: Documentation
    url: https://developer.vonage.com/en/api/messages-olympus
  - type: BaseURL
    url: https://api.nexmo.com/v1/messages
  - type: Documentation
    url: https://developer.vonage.com/en/api/verify
  - type: BaseURL
    url: https://api.nexmo.com
  - type: Documentation
    url: https://developer.vonage.com/en/api/numbers
  - type: Documentation
    url: https://developer.vonage.com/en/api/application.v2
  - type: BaseURL
    url: https://api.nexmo.com/v2/applications
- aid: vonage:vonage-messages-api
  name: Vonage Messages API
  description: Multi-channel messaging via SMS, WhatsApp, Messenger, Viber, MMS, RCS
  humanURL: https://developer.vonage.com/en/api/sms
  baseURL: https://rest.nexmo.com
  tags:
  - Messages
  properties:
  - type: OpenAPI
    url: openapi/vonage-messages-api-openapi.yml
  - type: Documentation
    url: https://developer.vonage.com/en/api/sms
  - type: BaseURL
    url: https://rest.nexmo.com
  - type: GraphQL
    url: graphql/vonage-graphql.md
  - type: Documentation
    url: https://developer.vonage.com/en/api/voice
  - type: BaseURL
    url: https://api.nexmo.com/v1
  - type: AsyncAPI
    url: https://raw.githubusercontent.com/api-evangelist/vonage/refs/heads/main/asyncapi/vonage-asyncapi.yml
  - type: Documentation
    url: https://developer.vonage.com/en/api/messages-olympus
  - type: BaseURL
    url: https://api.nexmo.com/v1/messages
  - type: Documentation
    url: https://developer.vonage.com/en/api/verify
  - type: BaseURL
    url: https://api.nexmo.com
  - type: Documentation
    url: https://developer.vonage.com/en/api/numbers
  - type: Documentation
    url: https://developer.vonage.com/en/api/application.v2
  - type: BaseURL
    url: https://api.nexmo.com/v2/applications
- aid: vonage:vonage-numbers-api
  name: Vonage Numbers API
  description: Provision and manage virtual phone numbers
  humanURL: https://developer.vonage.com/en/api/sms
  baseURL: https://rest.nexmo.com
  tags:
  - Numbers
  properties:
  - type: OpenAPI
    url: openapi/vonage-numbers-api-openapi.yml
  - type: Documentation
    url: https://developer.vonage.com/en/api/sms
  - type: BaseURL
    url: https://rest.nexmo.com
  - type: GraphQL
    url: graphql/vonage-graphql.md
  - type: Documentation
    url: https://developer.vonage.com/en/api/voice
  - type: BaseURL
    url: https://api.nexmo.com/v1
  - type: AsyncAPI
    url: https://raw.githubusercontent.com/api-evangelist/vonage/refs/heads/main/asyncapi/vonage-asyncapi.yml
  - type: Documentation
    url: https://developer.vonage.com/en/api/messages-olympus
  - type: BaseURL
    url: https://api.nexmo.com/v1/messages
  - type: Documentation
    url: https://developer.vonage.com/en/api/verify
  - type: BaseURL
    url: https://api.nexmo.com
  - type: Documentation
    url: https://developer.vonage.com/en/api/numbers
  - type: Documentation
    url: https://developer.vonage.com/en/api/application.v2
  - type: BaseURL
    url: https://api.nexmo.com/v2/applications
- aid: vonage:vonage-sms-api
  name: Vonage SMS API
  description: Send and receive SMS messages
  humanURL: https://developer.vonage.com/en/api/sms
  baseURL: https://rest.nexmo.com
  tags:
  - SMS
  properties:
  - type: OpenAPI
    url: openapi/vonage-sms-api-openapi.yml
  - type: Documentation
    url: https://developer.vonage.com/en/api/sms
  - type: BaseURL
    url: https://rest.nexmo.com
  - type: GraphQL
    url: graphql/vonage-graphql.md
  - type: Documentation
    url: https://developer.vonage.com/en/api/voice
  - type: BaseURL
    url: https://api.nexmo.com/v1
  - type: AsyncAPI
    url: https://raw.githubusercontent.com/api-evangelist/vonage/refs/heads/main/asyncapi/vonage-asyncapi.yml
  - type: Documentation
    url: https://developer.vonage.com/en/api/messages-olympus
  - type: BaseURL
    url: https://api.nexmo.com/v1/messages
  - type: Documentation
    url: https://developer.vonage.com/en/api/verify
  - type: BaseURL
    url: https://api.nexmo.com
  - type: Documentation
    url: https://developer.vonage.com/en/api/numbers
  - type: Documentation
    url: https://developer.vonage.com/en/api/application.v2
  - type: BaseURL
    url: https://api.nexmo.com/v2/applications
- aid: vonage:vonage-verify-api
  name: Vonage Verify API
  description: Two-factor authentication and phone verification
  humanURL: https://developer.vonage.com/en/api/sms
  baseURL: https://rest.nexmo.com
  tags:
  - Verify
  properties:
  - type: OpenAPI
    url: openapi/vonage-verify-api-openapi.yml
  - type: Documentation
    url: https://developer.vonage.com/en/api/sms
  - type: BaseURL
    url: https://rest.nexmo.com
  - type: GraphQL
    url: graphql/vonage-graphql.md
  - type: Documentation
    url: https://developer.vonage.com/en/api/voice
  - type: BaseURL
    url: https://api.nexmo.com/v1
  - type: AsyncAPI
    url: https://raw.githubusercontent.com/api-evangelist/vonage/refs/heads/main/asyncapi/vonage-asyncapi.yml
  - type: Documentation
    url: https://developer.vonage.com/en/api/messages-olympus
  - type: BaseURL
    url: https://api.nexmo.com/v1/messages
  - type: Documentation
    url: https://developer.vonage.com/en/api/verify
  - type: BaseURL
    url: https://api.nexmo.com
  - type: Documentation
    url: https://developer.vonage.com/en/api/numbers
  - type: Documentation
    url: https://developer.vonage.com/en/api/application.v2
  - type: BaseURL
    url: https://api.nexmo.com/v2/applications
- aid: vonage:vonage-voice-api
  name: Vonage Voice API
  description: Create and control voice calls
  humanURL: https://developer.vonage.com/en/api/sms
  baseURL: https://rest.nexmo.com
  tags:
  - Voice
  properties:
  - type: OpenAPI
    url: openapi/vonage-voice-api-openapi.yml
  - type: Documentation
    url: https://developer.vonage.com/en/api/sms
  - type: BaseURL
    url: https://rest.nexmo.com
  - type: GraphQL
    url: graphql/vonage-graphql.md
  - type: Documentation
    url: https://developer.vonage.com/en/api/voice
  - type: BaseURL
    url: https://api.nexmo.com/v1
  - type: AsyncAPI
    url: https://raw.githubusercontent.com/api-evangelist/vonage/refs/heads/main/asyncapi/vonage-asyncapi.yml
  - type: Documentation
    url: https://developer.vonage.com/en/api/messages-olympus
  - type: BaseURL
    url: https://api.nexmo.com/v1/messages
  - type: Documentation
    url: https://developer.vonage.com/en/api/verify
  - type: BaseURL
    url: https://api.nexmo.com
  - type: Documentation
    url: https://developer.vonage.com/en/api/numbers
  - type: Documentation
    url: https://developer.vonage.com/en/api/application.v2
  - type: BaseURL
    url: https://api.nexmo.com/v2/applications
name: Vonage
tags:
- Communication
- Messaging
- Telecommunications
- Video Conferencing
- Voice
- SMS
- Verification
type: Index
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/vonage.png
access: 3rd-Party
created: '2025-02-08'
modified: '2026-05-29'
position: Consumer
description: Vonage (part of Ericsson) provides cloud communications APIs for voice, SMS, messaging, video, and verification.
  The Vonage API platform enables businesses to embed communication capabilities into applications including voice calls,
  SMS, multi-channel messaging (WhatsApp, Messenger, Viber, RCS), video conferencing, and two-factor authentication. SDKs
  are available for Node.js, Python, Java, PHP, Ruby, .NET, Go, and Kotlin.
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/vonage/overview
- type: AgenticAccess
  url: agentic-access/vonage-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/vonage-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/vonage-domain-security.yml
- type: Authentication
  url: authentication/vonage-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/vonage
- url: https://developer.vonage.com/
  name: Vonage API Developer Portal
  type: Portal
  description: Official developer portal for Vonage APIs.
- url: https://developer.vonage.com/en/documentation
  name: Vonage API Documentation
  type: Documentation
  description: Complete API documentation for all Vonage APIs.
- url: https://api.support.vonage.com/hc/en-us
  name: Vonage API Support
  type: Support
  description: Vonage developer support center.
- url: https://github.com/Vonage
  name: Vonage GitHub Organization
  type: GitHubOrganization
  description: Vonage SDKs, code samples, and tools on GitHub.
- url: https://www.vonage.com/developer-center/
  name: Developer Center
  type: Portal
  description: Vonage developer resources and tools.
- url: https://developer.vonage.com/en/blog
  name: Vonage Developer Blog
  type: Blog
  description: Developer tutorials and updates.
- url: https://vonage-community.slack.com/
  name: Vonage Community Slack
  type: Community
  description: Community Slack workspace for Vonage developers.
- url: https://github.com/Vonage/vonage-node-sdk
  name: Vonage Node.js SDK
  type: SDKs
  description: Official Vonage SDK for Node.js.
- url: https://github.com/Vonage/vonage-python-sdk
  name: Vonage Python SDK
  type: SDKs
  description: Official Vonage SDK for Python.
- url: https://github.com/Vonage/vonage-java-sdk
  name: Vonage Java SDK
  type: SDKs
  description: Official Vonage SDK for Java.
- url: https://github.com/Vonage/vonage-php-sdk-core
  name: Vonage PHP SDK
  type: SDKs
  description: Official Vonage SDK for PHP.
- url: https://github.com/Vonage/vonage-ruby-sdk
  name: Vonage Ruby SDK
  type: SDKs
  description: Official Vonage SDK for Ruby.
- url: https://github.com/Vonage/vonage-dotnet-sdk
  name: Vonage .NET SDK
  type: SDKs
  description: Official Vonage SDK for .NET/C#.
- url: https://github.com/Vonage/vonage-go-sdk
  name: Vonage Go SDK
  type: SDKs
  description: Official Vonage SDK for Go.
- url: https://github.com/Vonage/vonage-kotlin-sdk
  name: Vonage Kotlin SDK
  type: SDKs
  description: Official Vonage SDK for Kotlin.
- url: https://github.com/Vonage/vonage-cli
  name: Vonage CLI
  type: CLI
  description: Command-line interface for managing Vonage resources.
- url: https://www.vonage.com/legal/
  name: Terms of Service
  type: TermsOfService
  description: Vonage terms of service.
- url: https://www.vonage.com/legal/unified-communications/privacy-policy/
  name: Privacy Policy
  type: PrivacyPolicy
  description: Vonage privacy policy.
- url: https://www.vonage.com/communications-apis/#pricing
  name: Pricing
  type: Pricing
  description: Vonage API pricing.
- type: Features
  data:
  - 'Pay-As-You-Go: no platform fee, per-message/minute pricing'
  - 'US SMS outbound: $0.00809/message'
  - 'US SMS inbound: $0.00649/message'
  - 'US Voice outbound (local): $0.00798/minute'
  - 'US Voice inbound: $0.0085/minute'
  - Verify API for OTP across SMS/Voice/WhatsApp channels
  - Messages API for SMS, MMS, WhatsApp, Viber, Facebook Messenger
  - Voice API with TwiML-style NCCO scripting
  - Number Insight for line type / carrier lookup
  - Network APIs (CAMARA — SIM Swap, Number Verify, Location)
  - Default 30 msg/sec for SMS and Verify
  - Vonage Video API (formerly OpenTok)
  - Conversation API for chat/voice/video apps
  - Webhooks for delivery receipts and inbound events
  - JWT and API key/secret auth
  - Carrier surcharges add 50-100% over base rates
  sources:
  - https://www.vonage.com/communications-apis/pricing/
  updated: '2026-05-04'
- type: Integrations
  url: https://developer.vonage.com/en/integrations
- name: MCP Server
  url: https://github.com/Vonage/vonage-mcp-server-documentation
  type: MCPServer
- type: LlmsText
  url: https://developer.vonage.com/llms.txt
integrations:
- name: Vonage
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
specificationVersion: '0.19'