Voxplo

Voxplo AI provides a voice agent platform that enables developers to add AI‑driven phone call capabilities to their applications via a REST API and a proprietary MCP (Message Control Protocol). The service can place outbound calls, answer inbound calls, book meetings, qualify leads, and integrate with custom business rules. Voxplo offers SDKs for multiple languages, comprehensive documentation, webhooks for event handling, and pricing tiers for businesses of all sizes. Its platform is designed for easy integration, scalability, and secure handling of voice interactions.

Voxplo publishes 1 API contract indexed on the APIs.io network: Agent API. Tagged areas include Company, Artificial Intelligence, Voice, and MCP.

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

Voxplo’s developer surface includes changelog, authentication, documentation, API reference, getting-started guide, pricing, engineering blog, and 30 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

60.6/100 strong Agent 63/100 agent native Full breakdown ↓
scored 2026-11-01 · rubric v0.26.0 · Show this score on your site →

1 published contract

Company Artificial Intelligence Voice MCP

Kin Score

Kin Score How this is scored →
scored 2026-11-01 · rubric v0.26.0

Composite quality — 60.6/100 · strong

Contract Quality 14.4 / 21

Developer Ergonomics 9.7 / 17

Access Clarity 13.4 / 17

Operational Transparency 4.7 / 11

Contract Governance 2.2 / 10

Discoverability 4.9 / 9

Regulatory Posture 4.9 / 15

Agent readiness — 63/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agent Skills +5 pts — skills artifact present, graded by who authored it
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter
Consent & Bot Identity +3 pts — common[].type includes AIPREF, ContentSignal, WebBotAuth, or HTTPMessageSignatures

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Governance scores 22.0 — up to +9.4 composite points
Developer Ergonomics scores 57.1 — up to +8.6 composite points
Contract Quality scores 67.8 — up to +8.1 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/voxplo-ai/apis.yml: open an issue on github.com/api-evangelist/voxplo-ai to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 5

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Agent2Agent

measured — observed by APIs.io (flavored)

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 1

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

Voxplo Agent API

The Agent API from Voxplo — 2 operation(s) for agent.

Pricing Plans 1

Published pricing tiers and plan structures.

Voxplo Ai Plans Pricing

4 plans

PLANS

Event Specifications 1

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

Voxplo Ai Webhooks

ASYNCAPI

Semantic Vocabularies 1

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

Voxplo Ai Context

4 classes · 20 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Voxplo API Rules

18 rules · 16 errors 1 warnings 1 info

SPECTRAL

JSON Schema 3

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

AgentCall

15 properties

JSON SCHEMA

AgentCallSummary

9 properties

JSON SCHEMA

PlaceCallRequest

8 properties

JSON SCHEMA

Security Posture 4

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

Voxplo Ai Authentication

2 schemes

SECURITY

Voxplo Ai Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Voxplo Ai Vulnerability Disclosure

security.txt · contact published

SECURITY

Voxplo Ai Trust Center

SOC 2, ISO 27001, GDPR

SECURITY

Agentic Access 1

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

Voxplo Ai Agentic Access

3 operations · 1 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 10

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Webhooks

DataModel

Idempotency

Conventions

Lifecycle

ErrorCatalog

Conformance

Scroll for all 10

Access & Security 8

Authentication, authorization, and security posture

Compliance

Authentication

SecurityTxt

SecurityTxt

Security

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Scroll for all 8

Operate 3

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Deprecation

Deprecation

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

PrivacyPolicy

TermsOfService

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: voxplo-ai
name: Voxplo
description: Voxplo AI provides a voice agent platform that enables developers to add AI‑driven phone call capabilities to
  their applications via a REST API and a proprietary MCP (Message Control Protocol). The service can place outbound calls,
  answer inbound calls, book meetings, qualify leads, and integrate with custom business rules. Voxplo offers SDKs for multiple
  languages, comprehensive documentation, webhooks for event handling, and pricing tiers for businesses of all sizes. Its
  platform is designed for easy integration, scalability, and secure handling of voice interactions.
url: https://artifacts.apis.io/voxplo-ai/apis.yml
image: https://www.voxplo.ai/icon.svg
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-31 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-31'
modified: '2026-10-31'
tags:
- Company
- Artificial Intelligence
- Voice
- MCP
tags_raw:
- Company
- AI
- Voice
- API
- MCP
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/voxplo-ai-agentic-access.yml
- type: Plans
  url: plans/voxplo-ai-plans-pricing.yml
- type: Spectral
  url: rules/voxplo-ai-rules.yml
- type: JSONLD
  url: json-ld/voxplo-ai-context.jsonld
- type: Vocabulary
  url: vocabulary/voxplo-ai-vocabulary.yml
- type: Webhooks
  url: asyncapi/voxplo-ai-webhooks.yml
- type: DataModel
  url: data-model/voxplo-ai-data-model.yml
- type: ChangeLog
  url: changelog/voxplo-ai-changelog.yml
- type: Idempotency
  url: conventions/voxplo-ai-conventions.yml
- type: Conventions
  url: conventions/voxplo-ai-conventions.yml
- type: Compliance
  url: https://www.voxplo.ai/security
- type: Authentication
  url: authentication/voxplo-ai-authentication.yml
- type: Deprecation
  url: https://www.voxplo.ai/docs/agent-api/versioning
- type: Lifecycle
  url: lifecycle/voxplo-ai-lifecycle.yml
- type: ErrorCatalog
  url: errors/voxplo-ai-problem-types.yml
- type: Conformance
  url: conformance/voxplo-ai-conformance.yml
- type: LLMsTxt
  url: llms/voxplo-ai-llms.txt
- type: AgentCard
  url: a2a/voxplo-ai-a2a.yml
- type: SecurityTxt
  url: well-known/voxplo-ai-voxplo-security.txt
- type: SecurityTxt
  url: well-known/voxplo-ai-security.txt
- type: WellKnown
  url: well-known/voxplo-ai-well-known.yml
- type: Hosts
  url: hosts/voxplo-ai-hosts.yml
- type: Vendors
  url: vendors/voxplo-ai-vendors.yml
- type: Security
  url: https://www.voxplo.ai/security
- type: TrustCenter
  url: security/voxplo-ai-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/voxplo-ai-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/voxplo-ai-domain-security.yml
- type: Website
  url: https://voxplo.ai/
- type: DeveloperPortal
  url: https://www.voxplo.ai/
- type: Documentation
  url: https://www.voxplo.ai/docs/agent-api
- type: APIReference
  url: https://www.voxplo.ai/openapi.json
- type: GettingStarted
  url: https://www.voxplo.ai/docs/agent-api/quickstart
- type: Pricing
  url: https://www.voxplo.ai/pricing
- type: Blog
  url: https://www.voxplo.ai/blog
- type: Support
  url: https://www.voxplo.ai/support
- type: PrivacyPolicy
  url: https://www.voxplo.ai/privacy
- type: TermsOfService
  url: https://www.voxplo.ai/terms
apis:
- aid: voxplo-ai:voxplo-ai-agent-api
  name: Voxplo Agent API
  description: The Agent API from Voxplo — 2 operation(s) for agent.
  humanURL: https://www.voxplo.ai/docs/agent-api
  baseURL: https://api.voxplo.ai/v1
  tags:
  - Agents
  tags_raw:
  - Agent
  properties:
  - type: OpenAPI
    url: openapi/voxplo-ai-agent-api-openapi.yml
  - type: JSONSchema
    url: json-schema/voxplo-ai-agent-call-schema.json
  - type: JSONSchema
    url: json-schema/voxplo-ai-place-call-request-schema.json
  - type: JSONSchema
    url: json-schema/voxplo-ai-agent-call-summary-schema.json
x-enrichment:
  date: '2026-10-31'
  status: nochange
  artifacts_added: 0
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Voxplo API — frequently asked questions

Does Voxplo have an API?

Yes. APIs.io lists 1 API from Voxplo, including Voxplo Agent API.

Is there an OpenAPI specification for the Voxplo API?

Yes. APIs.io indexes 1 OpenAPI specification for Voxplo, each linked for download from this page.

How do I authenticate with the Voxplo API?

Voxplo documents its authentication (2 schemes). The details are profiled on APIs.io as Voxplo Ai Authentication.

How much does the Voxplo API cost?

APIs.io lists 4 pricing plans for Voxplo, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the Voxplo API ready for AI agents?

Voxplo has a Kin Score of 60.6 out of 100 (strong) and an Agent Readiness score of 63.3 (agent-native), scored by API Evangelist on 2026-11-01.

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get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
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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