Vocode

Vocode is an open-source Python library (vocode-core, MIT licensed) for building real-time, streaming voice AI agents that run over phone calls, plus a hosted REST API at https://api.vocode.dev/v1 (Bearer API key) for placing and managing outbound and inbound phone calls, configuring agents, voices, prompts, actions, phone numbers, and webhooks without operating the streaming infrastructure yourself.

Vocode publishes 9 APIs on the APIs.io network, including Actions API, Agents API, Calls API, and 6 more. Tagged areas include Voice AI, Voice Agents, Telephony, Conversational AI, and Phone Calls.

Vocode’s developer surface includes authentication, documentation, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

34.0/100 thin ▬ flat Agent 22/100 agent aware Front door AI 4/6 moderate open core · MIT Full breakdown ↓
scored 2026-10-04 · rubric v0.23.0

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Voice AI Voice Agents Telephony Conversational AI Phone Calls

Kin Score

Kin Score How this is scored →
scored 2026-10-04 · rubric v0.23.0

Composite quality — 34.0/100 · thin

Contract Quality 8.6 / 19

Developer Ergonomics 4.5 / 15

Access Clarity 5.4 / 15

Operational Transparency 3.0 / 10

Contract Governance 0.0 / 9

Discoverability 5.0 / 8

Regulatory Posture 1.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 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 0 / 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

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 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 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/vocode: 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 9

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

Vocode Realtime Streaming Conversation

Real-time, bidirectional streaming conversation pipeline (StreamingConversation) in the open-source library that wires transcription, agent response, and synthesis together; the...

Vocode Open Source Library

vocode-core, the MIT-licensed Python library for building voice-based LLM agents with pluggable STT, LLM, and TTS providers and Twilio/Vonage telephony, self-hosted and free, di...

Vocode Actions API

The Actions API from Vocode — 4 operation(s) for actions.

Vocode Agents API

The Agents API from Vocode — 4 operation(s) for agents.

Vocode Calls API

The Calls API from Vocode — 5 operation(s) for calls.

Vocode Numbers API

The Numbers API from Vocode — 6 operation(s) for numbers.

Vocode Usage API

The Usage API from Vocode — 1 operation(s) for usage.

Vocode Voices API

The Voices API from Vocode — 4 operation(s) for voices.

Vocode Webhooks API

The Webhooks API from Vocode — 4 operation(s) for webhooks.

Scroll for all 9

Open Collections 9

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

API Collection

OPEN COLLECTION

Vocode Hosted Actions API

OPEN COLLECTION

Vocode Hosted Actions Agents API

OPEN COLLECTION

Vocode Hosted Actions Calls API

OPEN COLLECTION

Vocode Hosted Actions Numbers API

OPEN COLLECTION

Vocode Hosted Actions Usage API

OPEN COLLECTION

Vocode Hosted Actions Voices API

OPEN COLLECTION

Vocode Hosted Actions Webhooks API

OPEN COLLECTION

Vocode Hosted API

OPEN COLLECTION

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Vocode Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Vocode Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Vocode Finops

FINOPS

Security Posture 2

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

Vocode Authentication

http · 1 scheme

SECURITY

Vocode Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Vocode Agentic Access

28 operations · 14 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

LinkedIn

Website

Website

Source (apis.yml)

aid: vocode
url: https://raw.githubusercontent.com/api-evangelist/vocode/refs/heads/main/apis.yml
name: Vocode
kind: company
description: Vocode is an open-source Python library (vocode-core, MIT licensed) for building real-time, streaming voice AI
  agents that run over phone calls, plus a hosted REST API at https://api.vocode.dev/v1 (Bearer API key) for placing and managing
  outbound and inbound phone calls, configuring agents, voices, prompts, actions, phone numbers, and webhooks without operating
  the streaming infrastructure yourself.
deliveryModel:
  model: open-core
  license: MIT
  license_evidence:
    repo: vocodedev/vocode-core
    spdx: MIT
    stars: 3795
  open_source: true
  commercial: true
  callable_host: false
  label: Open core · an OSS project plus a commercial hosted product
  confidence: medium
  source:
  - openapi
  - pricing
  - repository-license
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  - url: https://www.vocode.dev
    status: 301
    note: declared website redirects to https://github.com/vocodedev — a different registrable domain (vocode.dev -> github.com),
      possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/vocode.png
tags:
- Voice AI
- Voice Agents
- Telephony
- Conversational AI
- Phone Calls
created: '2026-06-21'
modified: '2026-06-21'
specificationVersion: '0.23'
apis:
- aid: vocode:vocode-realtime-streaming
  name: Vocode Realtime Streaming Conversation
  tags:
  - Real-Time
  - Streaming
  - WebSocket
  tags_raw:
  - Realtime
  - Streaming
  - WebSocket
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.vocode.dev/open-source/how-it-works
  baseURL: https://api.vocode.dev/v1
  properties:
  - url: https://docs.vocode.dev/open-source/how-it-works
    type: Documentation
  - url: https://github.com/vocodedev/vocode-core/blob/main/vocode/streaming/streaming_conversation.py
    type: GitHub
  - url: review.yml
    type: Review
  description: Real-time, bidirectional streaming conversation pipeline (StreamingConversation) in the open-source library
    that wires transcription, agent response, and synthesis together; the hosted platform consumes telephony media-stream
    WebSockets, but no public client-facing wss conversation endpoint is documented in the hosted REST API.
- aid: vocode:vocode-oss-library
  name: Vocode Open Source Library
  tags:
  - Open Source
  - Python
  - Library
  - SDK
  tags_raw:
  - Open Source
  - Python
  - Library
  - SDK
  - Open-Source
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.vocode.dev/open-source/what-is-vocode
  baseURL: https://github.com/vocodedev/vocode-core
  properties:
  - url: https://docs.vocode.dev/open-source/what-is-vocode
    type: Documentation
  - url: https://github.com/vocodedev/vocode-core
    type: GitHub
  description: vocode-core, the MIT-licensed Python library for building voice-based LLM agents with pluggable STT, LLM, and
    TTS providers and Twilio/Vonage telephony, self-hosted and free, distinct from the hosted Vocode API.
- aid: vocode:vocode-actions-api
  name: Vocode Actions API
  description: The Actions API from Vocode — 4 operation(s) for actions.
  humanURL: https://docs.vocode.dev/api-reference/calls/create-call
  baseURL: https://api.vocode.dev/v1
  tags:
  - Actions
  properties:
  - type: OpenAPI
    url: openapi/vocode-actions-api-openapi.yml
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/calls/create-call
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/calls/get-call
  - type: Postman
    url: collections/vocode.postman_collection.json
  - type: OpenCollection
    url: collections/vocode.opencollection.json
  - type: GitHub
    url: https://github.com/vocodedev/vocode-core
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/agents/create-agent
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/agents/get-agent
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/numbers/buy-number
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/numbers/get-number
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/actions/create-action
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/actions/get-action
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/voices/create-voice
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/voices/get-voice
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/webhooks/create-webhook
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/webhooks/get-webhook
- aid: vocode:vocode-agents-api
  name: Vocode Agents API
  description: The Agents API from Vocode — 4 operation(s) for agents.
  humanURL: https://docs.vocode.dev/api-reference/calls/create-call
  baseURL: https://api.vocode.dev/v1
  tags:
  - Agents
  properties:
  - type: OpenAPI
    url: openapi/vocode-agents-api-openapi.yml
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/calls/create-call
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/calls/get-call
  - type: Postman
    url: collections/vocode.postman_collection.json
  - type: OpenCollection
    url: collections/vocode.opencollection.json
  - type: GitHub
    url: https://github.com/vocodedev/vocode-core
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/agents/create-agent
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/agents/get-agent
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/numbers/buy-number
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/numbers/get-number
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/actions/create-action
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/actions/get-action
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/voices/create-voice
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/voices/get-voice
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/webhooks/create-webhook
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/webhooks/get-webhook
- aid: vocode:vocode-calls-api
  name: Vocode Calls API
  description: The Calls API from Vocode — 5 operation(s) for calls.
  humanURL: https://docs.vocode.dev/api-reference/calls/create-call
  baseURL: https://api.vocode.dev/v1
  tags:
  - Calls
  properties:
  - type: OpenAPI
    url: openapi/vocode-calls-api-openapi.yml
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/calls/create-call
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/calls/get-call
  - type: Postman
    url: collections/vocode.postman_collection.json
  - type: OpenCollection
    url: collections/vocode.opencollection.json
  - type: GitHub
    url: https://github.com/vocodedev/vocode-core
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/agents/create-agent
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/agents/get-agent
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/numbers/buy-number
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/numbers/get-number
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/actions/create-action
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/actions/get-action
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/voices/create-voice
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/voices/get-voice
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/webhooks/create-webhook
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/webhooks/get-webhook
- aid: vocode:vocode-numbers-api
  name: Vocode Numbers API
  description: The Numbers API from Vocode — 6 operation(s) for numbers.
  humanURL: https://docs.vocode.dev/api-reference/calls/create-call
  baseURL: https://api.vocode.dev/v1
  tags:
  - Numbers
  properties:
  - type: OpenAPI
    url: openapi/vocode-numbers-api-openapi.yml
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/calls/create-call
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/calls/get-call
  - type: Postman
    url: collections/vocode.postman_collection.json
  - type: OpenCollection
    url: collections/vocode.opencollection.json
  - type: GitHub
    url: https://github.com/vocodedev/vocode-core
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/agents/create-agent
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/agents/get-agent
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/numbers/buy-number
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/numbers/get-number
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/actions/create-action
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/actions/get-action
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/voices/create-voice
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/voices/get-voice
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/webhooks/create-webhook
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/webhooks/get-webhook
- aid: vocode:vocode-usage-api
  name: Vocode Usage API
  description: The Usage API from Vocode — 1 operation(s) for usage.
  humanURL: https://docs.vocode.dev/api-reference/calls/create-call
  baseURL: https://api.vocode.dev/v1
  tags:
  - Usage
  properties:
  - type: OpenAPI
    url: openapi/vocode-usage-api-openapi.yml
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/calls/create-call
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/calls/get-call
  - type: Postman
    url: collections/vocode.postman_collection.json
  - type: OpenCollection
    url: collections/vocode.opencollection.json
  - type: GitHub
    url: https://github.com/vocodedev/vocode-core
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/agents/create-agent
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/agents/get-agent
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/numbers/buy-number
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/numbers/get-number
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/actions/create-action
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/actions/get-action
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/voices/create-voice
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/voices/get-voice
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/webhooks/create-webhook
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/webhooks/get-webhook
- aid: vocode:vocode-voices-api
  name: Vocode Voices API
  description: The Voices API from Vocode — 4 operation(s) for voices.
  humanURL: https://docs.vocode.dev/api-reference/calls/create-call
  baseURL: https://api.vocode.dev/v1
  tags:
  - Voice
  tags_raw:
  - Voices
  properties:
  - type: OpenAPI
    url: openapi/vocode-voices-api-openapi.yml
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/calls/create-call
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/calls/get-call
  - type: Postman
    url: collections/vocode.postman_collection.json
  - type: OpenCollection
    url: collections/vocode.opencollection.json
  - type: GitHub
    url: https://github.com/vocodedev/vocode-core
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/agents/create-agent
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/agents/get-agent
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/numbers/buy-number
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/numbers/get-number
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/actions/create-action
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/actions/get-action
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/voices/create-voice
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/voices/get-voice
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/webhooks/create-webhook
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/webhooks/get-webhook
- aid: vocode:vocode-webhooks-api
  name: Vocode Webhooks API
  description: The Webhooks API from Vocode — 4 operation(s) for webhooks.
  humanURL: https://docs.vocode.dev/api-reference/calls/create-call
  baseURL: https://api.vocode.dev/v1
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/vocode-webhooks-api-openapi.yml
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/calls/create-call
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/calls/get-call
  - type: Postman
    url: collections/vocode.postman_collection.json
  - type: OpenCollection
    url: collections/vocode.opencollection.json
  - type: GitHub
    url: https://github.com/vocodedev/vocode-core
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/agents/create-agent
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/agents/get-agent
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/numbers/buy-number
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/numbers/get-number
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/actions/create-action
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/actions/get-action
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/voices/create-voice
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/voices/get-voice
  - type: Documentation
    url: https://docs.vocode.dev/api-reference/webhooks/create-webhook
  - type: APIReference
    url: https://docs.vocode.dev/api-reference/webhooks/get-webhook
common:
- type: AgenticAccess
  url: agentic-access/vocode-agentic-access.yml
- type: DomainSecurity
  url: security/vocode-domain-security.yml
- type: Authentication
  url: authentication/vocode-authentication.yml
- type: GitHubOrganization
  url: https://github.com/vocodedev
- type: LinkedIn
  url: https://www.linkedin.com/company/vocode
- type: Website
  url: https://www.vocode.dev
- type: Documentation
  url: https://docs.vocode.dev
- type: Plans
  url: plans/vocode-plans-pricing.yml
- type: RateLimits
  url: rate-limits/vocode-rate-limits.yml
- type: FinOps
  url: finops/vocode-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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