HeyGen API

Overview

HeyGen provides REST APIs to create talking avatar videos, clone voices, translate videos with lip-sync, and run real-time avatar sessions. Use it to automate video content production at scale — from personalized sales outreach to multilingual marketing campaigns.

The current API is v3 (/v3/...). The v1 and v2 endpoints this skill used before (/v2/video/generate, /v1/video_status.get, /v2/video_translate) are retired on October 31, 2026 and already answer with a Deprecation header and a warning object naming the v3 replacement.

Setup

python3 -m venv .venv && .venv/bin/pip install requests
read -rs HEYGEN_API_KEY && export HEYGEN_API_KEY   # paste the key; it stays out of shell history

# Check the key and see the remaining credits
curl -s https://api.heygen.com/v3/users/me -H "X-Api-Key: $HEYGEN_API_KEY"

Base URL: https://api.heygen.com. Keys are created in the API dashboard at https://app.heygen.com/developers/api. Every generation call spends credits.