Phonic

Phonic is a San Francisco voice AI company (founded 2024, seed-backed by Lux Capital) building the first end-to-end speech-to-speech platform for reliable conversational voice agents. The Phonic API lets developers create and configure voice agents, attach voices, place and receive inbound/outbound phone calls (including via SIP trunking and Amazon Connect), run real-time speech-to-speech conversations over a WebSocket, wire up webhook/WebSocket/context/transfer/MCP tools, and analyze, evaluate, and extract structured data from conversations. It ships an OpenAPI 3.1 REST spec, an AsyncAPI 2.6.0 WebSocket spec, official Node and Python SDKs, a hosted MCP server, and llms.txt docs for AI clients.

Phonic publishes 10 APIs on the APIs.io network, including agents API, apiKeys API, auth API, and 7 more. Tagged areas include Company, Artificial Intelligence, Voice AI, Conversational AI, and Speech.

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

Phonic’s developer surface includes authentication, engineering blog, pricing, and 21 more developer resources.

🌐 Visit website 📡 Source on GitHub

45.4/100 developing ▬ flat Agent 54/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

AccessSelf serve

10 APIs 1 MCP Servers

CompanyArtificial IntelligenceVoice AIConversational AISpeechVoice AgentsTelephonySpeech to Speech

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 45.4/100 · developing

Contract Quality 17.0 / 25

Developer Ergonomics 6.5 / 20

Access Clarity 6.3 / 20

Operational Transparency 5.5 / 13

Contract Governance 2.0 / 12

Discoverability 8.2 / 10

Agent readiness — 54/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 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 4 / 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/phonic: 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 10

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

Open Collections 11

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

MCP Servers 1

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

Phonic MCP Server

Phonic's inbound MCP server exposes the Phonic API as MCP tools so a client such as Claude Code, Codex, or Cursor can manage agents, conversations, voices, and projects. It stay...

MCP SERVER

Rate Limits 1

Documented rate limits and quota policies.

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

MCPServer

LLMsTxt

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conformance

ErrorCatalog

Lifecycle

Conventions

DataModel

Webhooks

Build 3

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: phonic
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/phonic.png
name: Phonic
description: Phonic is a San Francisco voice AI company (founded 2024, seed-backed by Lux Capital) building the first end-to-end
  speech-to-speech platform for reliable conversational voice agents. The Phonic API lets developers create and configure
  voice agents, attach voices, place and receive inbound/outbound phone calls (including via SIP trunking and Amazon Connect),
  run real-time speech-to-speech conversations over a WebSocket, wire up webhook/WebSocket/context/transfer/MCP tools, and
  analyze, evaluate, and extract structured data from conversations. It ships an OpenAPI 3.1 REST spec, an AsyncAPI 2.6.0
  WebSocket spec, official Node and Python SDKs, a hosted MCP server, and llms.txt docs for AI clients.
url: https://raw.githubusercontent.com/api-evangelist/phonic/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- lux-capital
x-tier: profiled
x-tier-reason: enriched
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Artificial Intelligence
- Voice AI
- Conversational AI
- Speech
- Voice Agents
- Telephony
- Speech to Speech
tags_raw:
- Company
- Artificial Intelligence
- Voice AI
- Conversational AI
- Speech
- Voice Agents
- Telephony
- Speech To Speech
apis:
- aid: phonic:phonic-agents-api
  name: Phonic agents API
  description: The agents API from Phonic — 5 operation(s) for agents.
  humanURL: https://docs.phonic.co/
  baseURL: https://api.phonic.ai/v1
  tags:
  - Agents
  tags_raw:
  - agents
  properties:
  - type: OpenAPI
    url: openapi/phonic-agents-api-openapi.yml
  - type: AsyncAPI
    url: asyncapi/phonic-sts-asyncapi-original.yaml
  - type: Documentation
    url: https://docs.phonic.co/
  - type: APIReference
    url: https://docs.phonic.co/api-reference
  - type: GettingStarted
    url: https://docs.phonic.co/docs/get-started/quick-start
- aid: phonic:phonic-apikeys-api
  name: Phonic apiKeys API
  description: The apiKeys API from Phonic — 3 operation(s) for apikeys.
  humanURL: https://docs.phonic.co/
  baseURL: https://api.phonic.ai/v1
  tags:
  - APIKeys
  tags_raw:
  - apiKeys
  properties:
  - type: OpenAPI
    url: openapi/phonic-apikeys-api-openapi.yml
  - type: AsyncAPI
    url: asyncapi/phonic-sts-asyncapi-original.yaml
  - type: Documentation
    url: https://docs.phonic.co/
  - type: APIReference
    url: https://docs.phonic.co/api-reference
  - type: GettingStarted
    url: https://docs.phonic.co/docs/get-started/quick-start
- aid: phonic:phonic-auth-api
  name: Phonic auth API
  description: The auth API from Phonic — 2 operation(s) for auth.
  humanURL: https://docs.phonic.co/
  baseURL: https://api.phonic.ai/v1
  tags:
  - Authentication
  tags_raw:
  - auth
  properties:
  - type: OpenAPI
    url: openapi/phonic-auth-api-openapi.yml
  - type: AsyncAPI
    url: asyncapi/phonic-sts-asyncapi-original.yaml
  - type: Documentation
    url: https://docs.phonic.co/
  - type: APIReference
    url: https://docs.phonic.co/api-reference
  - type: GettingStarted
    url: https://docs.phonic.co/docs/get-started/quick-start
- aid: phonic:phonic-conversationitems-api
  name: Phonic conversationItems API
  description: The conversationItems API from Phonic — 1 operation(s) for conversationitems.
  humanURL: https://docs.phonic.co/
  baseURL: https://api.phonic.ai/v1
  tags: []
  tags_raw:
  - conversationItems
  properties:
  - type: OpenAPI
    url: openapi/phonic-conversationitems-api-openapi.yml
  - type: AsyncAPI
    url: asyncapi/phonic-sts-asyncapi-original.yaml
  - type: Documentation
    url: https://docs.phonic.co/
  - type: APIReference
    url: https://docs.phonic.co/api-reference
  - type: GettingStarted
    url: https://docs.phonic.co/docs/get-started/quick-start
- aid: phonic:phonic-conversations-api
  name: Phonic conversations API
  description: The conversations API from Phonic — 9 operation(s) for conversations.
  humanURL: https://docs.phonic.co/
  baseURL: https://api.phonic.ai/v1
  tags:
  - Conversations
  tags_raw:
  - conversations
  properties:
  - type: OpenAPI
    url: openapi/phonic-conversations-api-openapi.yml
  - type: AsyncAPI
    url: asyncapi/phonic-sts-asyncapi-original.yaml
  - type: Documentation
    url: https://docs.phonic.co/
  - type: APIReference
    url: https://docs.phonic.co/api-reference
  - type: GettingStarted
    url: https://docs.phonic.co/docs/get-started/quick-start
- aid: phonic:phonic-extractionschemas-api
  name: Phonic extractionSchemas API
  description: The extractionSchemas API from Phonic — 2 operation(s) for extractionschemas.
  humanURL: https://docs.phonic.co/
  baseURL: https://api.phonic.ai/v1
  tags: []
  tags_raw:
  - extractionSchemas
  properties:
  - type: OpenAPI
    url: openapi/phonic-extractionschemas-api-openapi.yml
  - type: AsyncAPI
    url: asyncapi/phonic-sts-asyncapi-original.yaml
  - type: Documentation
    url: https://docs.phonic.co/
  - type: APIReference
    url: https://docs.phonic.co/api-reference
  - type: GettingStarted
    url: https://docs.phonic.co/docs/get-started/quick-start
- aid: phonic:phonic-projects-api
  name: Phonic projects API
  description: The projects API from Phonic — 4 operation(s) for projects.
  humanURL: https://docs.phonic.co/
  baseURL: https://api.phonic.ai/v1
  tags:
  - Project
  tags_raw:
  - projects
  properties:
  - type: OpenAPI
    url: openapi/phonic-projects-api-openapi.yml
  - type: AsyncAPI
    url: asyncapi/phonic-sts-asyncapi-original.yaml
  - type: Documentation
    url: https://docs.phonic.co/
  - type: APIReference
    url: https://docs.phonic.co/api-reference
  - type: GettingStarted
    url: https://docs.phonic.co/docs/get-started/quick-start
- aid: phonic:phonic-tools-api
  name: Phonic tools API
  description: The tools API from Phonic — 2 operation(s) for tools.
  humanURL: https://docs.phonic.co/
  baseURL: https://api.phonic.ai/v1
  tags:
  - Tools
  tags_raw:
  - tools
  properties:
  - type: OpenAPI
    url: openapi/phonic-tools-api-openapi.yml
  - type: AsyncAPI
    url: asyncapi/phonic-sts-asyncapi-original.yaml
  - type: Documentation
    url: https://docs.phonic.co/
  - type: APIReference
    url: https://docs.phonic.co/api-reference
  - type: GettingStarted
    url: https://docs.phonic.co/docs/get-started/quick-start
- aid: phonic:phonic-voices-api
  name: Phonic voices API
  description: The voices API from Phonic — 2 operation(s) for voices.
  humanURL: https://docs.phonic.co/
  baseURL: https://api.phonic.ai/v1
  tags:
  - Voices
  tags_raw:
  - voices
  properties:
  - type: OpenAPI
    url: openapi/phonic-voices-api-openapi.yml
  - type: AsyncAPI
    url: asyncapi/phonic-sts-asyncapi-original.yaml
  - type: Documentation
    url: https://docs.phonic.co/
  - type: APIReference
    url: https://docs.phonic.co/api-reference
  - type: GettingStarted
    url: https://docs.phonic.co/docs/get-started/quick-start
- aid: phonic:phonic-workspace-api
  name: Phonic workspace API
  description: The workspace API from Phonic — 1 operation(s) for workspace.
  humanURL: https://docs.phonic.co/
  baseURL: https://api.phonic.ai/v1
  tags:
  - Workspace
  tags_raw:
  - workspace
  properties:
  - type: OpenAPI
    url: openapi/phonic-workspace-api-openapi.yml
  - type: AsyncAPI
    url: asyncapi/phonic-sts-asyncapi-original.yaml
  - type: Documentation
    url: https://docs.phonic.co/
  - type: APIReference
    url: https://docs.phonic.co/api-reference
  - type: GettingStarted
    url: https://docs.phonic.co/docs/get-started/quick-start
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/phonic-openapi-overlay.yaml
- type: AgenticAccess
  url: agentic-access/phonic-agentic-access.yml
- type: DomainSecurity
  url: security/phonic-domain-security.yml
- type: Authentication
  url: authentication/phonic-authentication.yml
- type: Packages
  url: packages/phonic-packages.yml
- type: SDKs
  url: packages/phonic-packages.yml
- type: MCPServer
  url: mcp/phonic-mcp.yml
- type: LLMsTxt
  url: llms/phonic-llms.txt
- type: Conformance
  url: conformance/phonic-conformance.yml
- type: ErrorCatalog
  url: errors/phonic-problem-types.yml
- type: Lifecycle
  url: lifecycle/phonic-lifecycle.yml
- type: StatusPage
  url: https://status.phonic.ai/
- type: Conventions
  url: conventions/phonic-conventions.yml
- type: RateLimits
  url: rate-limits/phonic-rate-limits.yml
- type: DataModel
  url: data-model/phonic-data-model.yml
- type: Webhooks
  url: https://docs.phonic.co/webhooks/overview
- type: AgentSkill
  url: skills/_index.yml
- type: DeveloperPortal
  url: https://docs.phonic.co/
- type: Blog
  url: https://phonic.co/blog
- type: GitHubOrganization
  url: https://github.com/Phonic-Co
- type: Pricing
  url: https://phonic.co/pricing
- type: TermsOfService
  url: https://phonic.co/terms-of-service
- type: PrivacyPolicy
  url: https://phonic.co/privacy-policy
- type: Website
  url: https://phonic.ai/
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 16
  pass: local-v1