HeyGen

HeyGen API

The HeyGen REST API exposes video generation, avatar management, text-to-speech (Starfish), video translation, and lipsync capabilities. It supports avatar videos generated from a single text prompt via the Video Agent API, as well as fine-grained programmatic control over avatars, voices, backgrounds, and layouts.

GitHub

Documentation

📖
Documentation
https://developers.heygen.com/
📖
GettingStarted
https://developers.heygen.com/docs/quick-start
📖
Authentication
https://developers.heygen.com/docs/authentication

Other Resources

🔗
Signup
https://app.heygen.com/signup
🔗
API
https://developers.heygen.com/reference
🔗
Pricing
https://www.heygen.com/pricing
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/heygen/refs/heads/main/apis.yml

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API entry from apis.yml

apis.yml Raw ↑ 
aid: heygen:heygen-api
name: HeyGen API
description: The HeyGen REST API exposes video generation, avatar management, text-to-speech (Starfish),
  video translation, and lipsync capabilities. It supports avatar videos generated from a single text
  prompt via the Video Agent API, as well as fine-grained programmatic control over avatars, voices, backgrounds,
  and layouts.
humanURL: https://developers.heygen.com/
baseURL: https://api.heygen.com/v3
tags:
- Video
- Avatars
- Voices
- Lip Sync
- Translation
- Text-to-Speech
tags_raw:
- Video
- Avatars
- Voices
- Lipsync
- Translation
- Text To Speech
properties:
- type: Documentation
  url: https://developers.heygen.com/
- type: GettingStarted
  url: https://developers.heygen.com/docs/quick-start
- type: Signup
  url: https://app.heygen.com/signup
- type: API
  url: https://developers.heygen.com/reference
- type: Pricing
  url: https://www.heygen.com/pricing
- type: Authentication
  url: https://developers.heygen.com/docs/authentication
features:
- name: Video Agent API
  description: Generate complete avatar videos from a single text prompt with no manual setup.
- name: Video Generation API
  description: Programmatically control avatars, voices, backgrounds, and layouts to compose videos.
- name: Digital Twin Avatars (Avatar V)
  description: Create photorealistic digital twins of real people for enterprise and creator use.
- name: Photo Avatar and Avatar IV
  description: Generate talking avatars from a single photo with multiple model tiers.
- name: Starfish Text-to-Speech
  description: Natural voice synthesis used for narration across video and audio workflows.
- name: Video Translation
  description: Translate and dub videos into 175+ languages with preserved lip-sync.
- name: Lipsync
  description: Swap audio in existing videos with automatic lip synchronization (Precision and Speed models).
- name: Streaming Avatars
  description: Real-time interactive avatar streaming for conversational experiences.
- name: Webhooks
  description: Subscribe to events such as video completion for downstream automation.
- name: MCP and Skills
  description: Connect HeyGen to AI assistants via Model Context Protocol or coding-agent Skills.
useCases:
- name: Personalized Sales Outreach
  description: Send 1:1 personalized prospect videos at scale.
- name: E-Learning and Training
  description: Produce and update course content without re-recording.
- name: Marketing Localization
  description: Translate hero videos into dozens of languages with preserved presenter likeness.
- name: Podcast Repurposing
  description: Convert audio content into avatar-narrated video.
- name: Conversational Avatars
  description: Build interactive avatar agents for support and onboarding.
integrations:
- name: Claude
- name: Claude Code
- name: Cursor
- name: Zapier
- name: Make
- name: Webhooks
- name: OAuth (MCP)
authentication:
- type: API Key
  description: API keys generated in the HeyGen dashboard are passed in the X-Api-Key header; MCP-based
    connections use OAuth.