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 10 APIs on the APIs.io network, including Authentication API, Call Management API, Campaigns API, and 7 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 28 more developer resources.

🌐 Visit website 📡 Source on GitHub

49.8/100 developing ▬ flat Agent 29/100 agent ready saas Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

5 APIs

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 2026-09-14 · rubric v0.22.0

Composite quality — 49.8/100 · developing

Contract Quality 10.8 / 19

Developer Ergonomics 7.1 / 15

Access Clarity 6.9 / 15

Operational Transparency 3.6 / 10

Contract Governance 0.4 / 9

Discoverability 6.1 / 8

Regulatory Posture 8.5 / 15

Create-or-Update Ergonomics 0.0 / 10

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 Well-Known Document 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.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. 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. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 10

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

Nextiva Authentication API

User login and token management operations.

Nextiva Call Management API

Actions specific to managing calls within workitems

Nextiva Campaigns API

The Campaigns API from Nextiva — 1 operation(s) for campaigns.

Nextiva Conversations API

Operations related to conversations

Nextiva DTMF API

DTMF tone sending for calls

Nextiva Email API

Email-related workitem operations

Nextiva SMS Messaging API

Operations for sending and managing SMS messages.

Nextiva Tickets API

The Tickets API from Nextiva — 1 operation(s) for tickets.

Nextiva Transfers API

Operations for transferring workitems

Nextiva Workitems API

The Workitems API from Nextiva — 4 operation(s) for workitems.

Scroll for all 10

Open Collections 5

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

Provider Authentication API

OPEN COLLECTION

Conversation API

OPEN COLLECTION

Provider Authentication API

OPEN COLLECTION

SMS Messaging API

OPEN COLLECTION

Workitem Service API

OPEN COLLECTION

Event Specifications 1

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

Nextiva Events

ASYNCAPI

Security Posture 3

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

Nextiva Authentication

http · 3 schemes

SECURITY

Nextiva Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Nextiva Vulnerability Disclosure

Hackerone · contact published

SECURITY

Resources

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

X-MCPServerCandidate

X-MCPServerCandidate

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

Other 6

Properties that don't map to a standard resource type

CapabilityMap

Overlay

Overlay

Overlay

Overlay

Overlay

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.'
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
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:nextiva-authentication-api
  name: Nextiva Authentication API
  description: User login and token management operations.
  humanURL: https://developer.nextiva.com/nextiva/reference/generatetokenwithauthorities
  baseURL: https://api.nextiva.com
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/nextiva-authentication-api-openapi.yml
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/authentication
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/workitem-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/conversation-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/reference/inbound-and-outbound-sms
- aid: nextiva:nextiva-call-management-api
  name: Nextiva Call Management API
  description: Actions specific to managing calls within workitems
  humanURL: https://developer.nextiva.com/nextiva/reference/generatetokenwithauthorities
  baseURL: https://api.nextiva.com
  tags:
  - Call Management
  properties:
  - type: OpenAPI
    url: openapi/nextiva-call-management-api-openapi.yml
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/authentication
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/workitem-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/conversation-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/reference/inbound-and-outbound-sms
- aid: nextiva:nextiva-campaigns-api
  name: Nextiva Campaigns API
  description: The Campaigns API from Nextiva — 1 operation(s) for campaigns.
  humanURL: https://developer.nextiva.com/nextiva/reference/generatetokenwithauthorities
  baseURL: https://api.nextiva.com
  tags:
  - Campaigns
  properties:
  - type: OpenAPI
    url: openapi/nextiva-campaigns-api-openapi.yml
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/authentication
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/workitem-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/conversation-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/reference/inbound-and-outbound-sms
- aid: nextiva:nextiva-conversations-api
  name: Nextiva Conversations API
  description: Operations related to conversations
  humanURL: https://developer.nextiva.com/nextiva/reference/generatetokenwithauthorities
  baseURL: https://api.nextiva.com
  tags:
  - Conversations
  properties:
  - type: OpenAPI
    url: openapi/nextiva-conversations-api-openapi.yml
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/authentication
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/workitem-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/conversation-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/reference/inbound-and-outbound-sms
- aid: nextiva:nextiva-dtmf-api
  name: Nextiva DTMF API
  description: DTMF tone sending for calls
  humanURL: https://developer.nextiva.com/nextiva/reference/generatetokenwithauthorities
  baseURL: https://api.nextiva.com
  tags:
  - DTMF
  properties:
  - type: OpenAPI
    url: openapi/nextiva-dtmf-api-openapi.yml
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/authentication
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/workitem-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/conversation-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/reference/inbound-and-outbound-sms
- aid: nextiva:nextiva-email-api
  name: Nextiva Email API
  description: Email-related workitem operations
  humanURL: https://developer.nextiva.com/nextiva/reference/generatetokenwithauthorities
  baseURL: https://api.nextiva.com
  tags:
  - Email
  properties:
  - type: OpenAPI
    url: openapi/nextiva-email-api-openapi.yml
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/authentication
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/workitem-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/conversation-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/reference/inbound-and-outbound-sms
- aid: nextiva:nextiva-sms-messaging-api
  name: Nextiva SMS Messaging API
  description: Operations for sending and managing SMS messages.
  humanURL: https://developer.nextiva.com/nextiva/reference/generatetokenwithauthorities
  baseURL: https://api.nextiva.com
  tags:
  - SMS Messaging
  properties:
  - type: OpenAPI
    url: openapi/nextiva-sms-messaging-api-openapi.yml
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/authentication
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/workitem-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/conversation-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/reference/inbound-and-outbound-sms
- aid: nextiva:nextiva-tickets-api
  name: Nextiva Tickets API
  description: The Tickets API from Nextiva — 1 operation(s) for tickets.
  humanURL: https://developer.nextiva.com/nextiva/reference/generatetokenwithauthorities
  baseURL: https://api.nextiva.com
  tags:
  - Tickets
  properties:
  - type: OpenAPI
    url: openapi/nextiva-tickets-api-openapi.yml
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/authentication
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/workitem-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/conversation-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/reference/inbound-and-outbound-sms
- aid: nextiva:nextiva-transfers-api
  name: Nextiva Transfers API
  description: Operations for transferring workitems
  humanURL: https://developer.nextiva.com/nextiva/reference/generatetokenwithauthorities
  baseURL: https://api.nextiva.com
  tags:
  - Transfers
  properties:
  - type: OpenAPI
    url: openapi/nextiva-transfers-api-openapi.yml
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/authentication
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/workitem-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/conversation-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/reference/inbound-and-outbound-sms
- aid: nextiva:nextiva-workitems-api
  name: Nextiva Workitems API
  description: The Workitems API from Nextiva — 4 operation(s) for workitems.
  humanURL: https://developer.nextiva.com/nextiva/reference/generatetokenwithauthorities
  baseURL: https://api.nextiva.com
  tags:
  - Work Items
  tags_raw:
  - Workitems
  properties:
  - type: OpenAPI
    url: openapi/nextiva-workitems-api-openapi.yml
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/authentication
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/workitem-service
  - type: Documentation
    url: https://developer.nextiva.com/nextiva/docs/conversation-service
  - 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: CapabilityMap
  url: capabilities/nextiva-capability-edges.yml
  name: Nextiva Business Capability Map
- type: Overlay
  url: overlays/nextiva-authentication-overlay.yaml
- type: Overlay
  url: overlays/nextiva-provider-authentication-overlay.yaml
- type: Overlay
  url: overlays/nextiva-workitem-service-overlay.yaml
- type: Overlay
  url: overlays/nextiva-conversation-overlay.yaml
- type: Overlay
  url: overlays/nextiva-sms-messaging-overlay.yaml
- 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: X-MCPServerCandidate
  url: mcp/nextiva-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- 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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