Nextiva

Nextiva is a Scottsdale, Arizona based cloud communications and customer experience company whose NextOS / NEXT platform combines UCaaS business phone service, contact center (NCX), SMS and team messaging, voice AI agents, and conversation analytics for small business through enterprise. Its developer surface is the Nextiva Contact Center platform: a ReadMe-hosted developer portal at developer.nextiva.com publishing five REST OpenAPI 3.0 contracts (Provider Authentication, Provider Token Service, Workitem Service, Conversation, SMS Messaging) served from api.nextiva.com, alongside four frontend SDKs (Core, Web, React, React Native) that wrap the same backend over HTTP plus two WebSocket channels — an events socket for real-time workitem, offer, phone-state and live-transcription notifications, and an analytics socket for supervisory data.

Nextiva publishes 5 APIs on the APIs.io network, including Provider Authentication API, Provider Token Service API, Workitem Service API, and 2 more. Tagged areas include Company, Communications, Voice, Contact Center, and Customer Experience.

The Nextiva catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Nextiva’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, authentication, and 22 more developer resources.

🌐 Visit website 📡 Source on GitHub

51.9/100 developing ▬ flat Agent 29/100 agent ready Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

5 APIs 1 MCP Servers

Company Communications Voice Contact Center Customer Experience SMS Messaging Unified Communications VoIP Telephony Conversational AI Call Center

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 51.9/100 · developing

Contract Quality 12.8 / 21

Developer Ergonomics 8.0 / 17

Access Clarity 7.8 / 17

Operational Transparency 4.1 / 11

Contract Governance 1.7 / 10

Discoverability 6.3 / 9

Regulatory Posture 8.5 / 15

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Telecommunications regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/nextiva: 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 5

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

MCP Servers 1

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

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Conformance

Lifecycle

Webhooks

DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 5

Authentication, authorization, and security posture

Security

Compliance

Authentication

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: nextiva
name: Nextiva
description: 'Nextiva is a Scottsdale, Arizona based cloud communications and customer experience company whose NextOS / NEXT
  platform combines UCaaS business phone service, contact center (NCX), SMS and team messaging, voice AI agents, and conversation
  analytics for small business through enterprise. Its developer surface is the Nextiva Contact Center platform: a ReadMe-hosted
  developer portal at developer.nextiva.com publishing five REST OpenAPI 3.0 contracts (Provider Authentication, Provider
  Token Service, Workitem Service, Conversation, SMS Messaging) served from api.nextiva.com, alongside four frontend SDKs
  (Core, Web, React, React Native) that wrap the same backend over HTTP plus two WebSocket channels — an events socket for
  real-time workitem, offer, phone-state and live-transcription notifications, and an analytics socket for supervisory data.'
image: https://files.readme.io/c57cfd17e3ed303431732141b3a42eaff618f7682e4cd2c42e12470ba7ce8878-nextiva_logo_rgb_dark.svg
url: https://raw.githubusercontent.com/api-evangelist/nextiva/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: profiled
x-tier-reason: enrichment-pipeline
specificationVersion: '0.23'
created: '2026-07-31'
modified: '2026-07-31'
tags:
- Company
- Communications
- Voice
- Contact Center
- Customer Experience
- SMS
- Messaging
- Unified Communications
- VoIP
- Telephony
- Conversational AI
- Call Center
apis:
- aid: nextiva:provider-authentication
  name: Nextiva Provider Authentication API
  description: Login and token refresh for the Nextiva Contact Center platform. Basic authentication generates a JWT bearer
    token carrying the user's authorities; the token-refresh operation exchanges an existing bearer token for a new one. Every
    other Nextiva API requires the token this API issues.
  humanURL: https://developer.nextiva.com/nextiva/reference/generatetokenwithauthorities
  baseURL: https://api.nextiva.com
  tags:
  - Authentication
  - Tokens
  - Security
  properties:
  - type: OpenAPI
    url: openapi/nextiva-authentication-openapi.yml
  - type: Overlay
    url: overlays/nextiva-authentication-overlay.yaml
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/authentication
- aid: nextiva:provider-token-service
  name: Nextiva Provider Token Service API
  description: Spring-secured provider token endpoints that mint JWTs with user authorities, authenticate a user and redirect
    with a secure token, and generate time-limited multi-tenant portal access tokens.
  humanURL: https://developer.nextiva.com/nextiva/reference/generatetokenwithauthorities
  baseURL: https://api.nextiva.com/provider
  tags:
  - Authentication
  - Tokens
  - Multi-Tenant
  properties:
  - type: OpenAPI
    url: openapi/nextiva-provider-authentication-openapi.yml
  - type: Overlay
    url: overlays/nextiva-provider-authentication-overlay.yaml
- aid: nextiva:workitem-service
  name: Nextiva Workitem Service API
  description: Retrieve and control workitems — the unit of work in the Nextiva Contact Center — and the calls attached to
    them. Fetch workitems and workitem detail, bridge, hold, hang up, mute and unmute a call, send DTMF digits, change ACD
    priority, send an email response, and transfer a call to another agent or to an inbox queue.
  humanURL: https://developer.nextiva.com/nextiva/reference/fetchworkitems
  baseURL: https://api.nextiva.com
  tags:
  - Work Items
  - Call Control
  - Contact Center
  - Transfers
  - DTMF
  - Email
  tags_raw:
  - Workitems
  - Call Control
  - Contact Center
  - Transfers
  - DTMF
  - Email
  properties:
  - type: OpenAPI
    url: openapi/nextiva-workitem-service-openapi.yml
  - type: Overlay
    url: overlays/nextiva-workitem-service-overlay.yaml
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/workitem-service
- aid: nextiva:conversation
  name: Nextiva Conversation API
  description: Read the conversation graph across the contact center — conversations and their workitems, conversation history
    by participant, campaign and ticket scoped conversations, unread counts, conversation activity summaries, and the transcriptions
    and call recordings attached to a workitem.
  humanURL: https://developer.nextiva.com/nextiva/reference/fetchconversations
  baseURL: https://api.nextiva.com
  tags:
  - Conversations
  - Analytics
  - Transcription
  - Recordings
  - Campaigns
  - Tickets
  properties:
  - type: OpenAPI
    url: openapi/nextiva-conversation-openapi.yml
  - type: Overlay
    url: overlays/nextiva-conversation-overlay.yaml
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/conversation-service
- aid: nextiva:sms-messaging
  name: Nextiva SMS Messaging API
  description: Send outbound SMS messages from a Nextiva user. Inbound SMS arrives as a workitem on the SDK event stream rather
    than as a customer-configured webhook.
  humanURL: https://developer.nextiva.com/nextiva/reference/sendsmsmessage
  baseURL: https://api.nextiva.com
  tags:
  - SMS
  - Messaging
  - Text
  properties:
  - type: OpenAPI
    url: openapi/nextiva-sms-messaging-openapi.yml
  - type: Overlay
    url: overlays/nextiva-sms-messaging-overlay.yaml
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/reference/inbound-and-outbound-sms
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.nextiva.com/
- type: DeveloperPortal
  url: https://developer.nextiva.com/nextiva/
- type: Documentation
  url: https://developer.nextiva.com/nextiva/docs/overview-of-sdks
- type: APIReference
  url: https://developer.nextiva.com/nextiva/reference/generatetokenwithauthorities
- type: GettingStarted
  url: https://developer.nextiva.com/nextiva/docs/sdk-installation
- type: Support
  url: https://help.nextiva.com/
- type: Blog
  url: https://www.nextiva.com/blog/
- type: GitHubOrganization
  url: https://github.com/nextiva
- type: Pricing
  url: https://www.nextiva.com/nextivapricing
- type: Login
  url: https://login.nextiva.com/
- type: TermsOfService
  url: https://www.nextiva.com/legal.html
- type: PrivacyPolicy
  url: https://www.nextiva.com/privacy-policy.html
- type: StatusPage
  url: https://status.nextiva.com/
- type: Security
  url: https://www.nextiva.com/security-policy.html
- type: Compliance
  url: https://www.nextiva.com/resources/learn/security-certification-overview
- type: Integrations
  url: https://www.nextiva.com/integrations
- type: Packages
  url: packages/nextiva-packages.yml
- type: SDKs
  url: packages/nextiva-packages.yml
- type: Authentication
  url: authentication/nextiva-authentication.yml
- type: Conventions
  url: conventions/nextiva-conventions.yml
- type: ErrorCatalog
  url: errors/nextiva-problem-types.yml
- type: Conformance
  url: conformance/nextiva-conformance.yml
- type: Lifecycle
  url: lifecycle/nextiva-lifecycle.yml
- type: DomainSecurity
  url: security/nextiva-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/nextiva-vulnerability-disclosure.yml
- type: Webhooks
  url: asyncapi/nextiva-events.yml
- type: DataModel
  url: data-model/nextiva-data-model.yml
- type: MCPServer
  url: mcp/nextiva-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/nextiva-llms.txt
x-enrichment:
  date: '2026-07-31'
  status: enriched
  artifacts_added: 28
  pass: local-v1

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Nextiva

Kin Score

APIs 5

Nextiva Provider Authentication API

Nextiva Provider Token Service API

Nextiva Workitem Service API

Nextiva Conversation API

Nextiva SMS Messaging API

Open Collections 5

Provider Authentication API

Conversation API

Provider Authentication API

SMS Messaging API

Workitem Service API

MCP Servers 1

Nextiva MCP Server

Event Specifications 1

Nextiva Events

Security Posture 3

Nextiva Authentication

Nextiva Domain Security

Nextiva Vulnerability Disclosure

Resources