HeyGen API

Name: HeyGen API
Brand: HeyGen API
Availability: InStock

✓ Official Vendor SpecAI/MLVisionapiKey11 EndpointsREST

For Agents

Generate AI avatar videos, talking-photo clips, and translated videos by submitting text and template inputs to HeyGen, then poll for the rendered output URL.

Install Jentic One Beta

Connect the HeyGen API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the HeyGen API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.

Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.

Step 1: Jentic One Host machine

# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh

Step 2: Agent machine

# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register       # connects your agent to your Jentic One instance

Jentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.

Capabilities

What an agent can do with HeyGen API.

Generate AI avatar videos from a script and a chosen avatar via POST /v1/video/generate

Create a digital twin or photo avatar from a source image using /v1/avatar/photo and /v1/avatar/digital-twin

Translate an existing video into another language while preserving the speaker's voice via POST /v1/video_translate/translate

GET STARTED

Start building with HeyGen API

Explore with Jentic

View OpenAPI Document

Use Cases

Patterns agents use HeyGen API for, with concrete tasks.

★ Personalised Video Outreach

Sales and marketing teams generate one-to-one prospecting videos by passing a personalised script and a chosen avatar to POST /v1/video/generate. The job returns a video_id, then GET /v1/video/{video_id} polls until the MP4 URL is ready — typically within a few minutes for short clips. This produces avatar videos at thousands of permutations without recording each one manually.

Call POST /v1/video/generate with avatar_id, script 'Hi Alex, here is a quick demo for you', and voice_id, then poll GET /v1/video/{video_id} every 30 seconds until status is completed.

Multilingual Content Localisation

Content teams send an existing English video URL to POST /v1/video_translate/translate with a target language; HeyGen produces a translated version with the original speaker's voice cloned into the new language. This drops localisation time from days of voiceover work to minutes per language.

Submit POST /v1/video_translate/translate with video_url and output_language=es-ES, then poll the returned job until the translated MP4 URL is ready.

Template-Driven Video Production

Brand teams set up a HeyGen template with placeholders for name, product, and call-to-action, then generate hundreds of videos via POST /v1/video_agent/generate by passing variable values per recipient. The API renders consistent on-brand output without designers re-cutting each clip.

Call POST /v1/video_agent/generate with template_id and variables {name: 'Alex', product: 'Pilot'}, then capture the returned video_id for status polling.

AI Agent Video Workflow

Through Jentic, an AI agent can search 'generate an avatar video' and receive HeyGen's create-and-poll pattern with the input schema. Jentic holds the X-Api-Key in the vault, so the agent can drive end-to-end video production — script generation in an LLM, render in HeyGen, post to a CMS — without ever seeing the API key.

Search Jentic for 'generate an avatar video', load the schema for POST /v1/video/generate, and execute with avatar_id, voice_id, and a 100-word script.

Key Endpoints

11 endpoints — the heygen api generates ai-powered videos featuring lifelike avatars, talking photos, and translated voiceovers.

METHOD

PATH

DESCRIPTION

POST

/v1/video/generate

Generate an AI avatar video from a script

GET

/v1/video/{video_id}

Get the status and URL of a generated video

POST

/v1/video_translate/translate

Translate an existing video into another language

POST

/v1/avatar/photo

Create a photo avatar from an image

POST

/v1/avatar/digital-twin

Create a digital twin avatar

GET

/v2/avatars

List available avatars

GET

/v2/voices

List available voices

POST

/v1/video/generate

Generate an AI avatar video from a script

GET

/v1/video/{video_id}

Get the status and URL of a generated video

POST

/v1/video_translate/translate

Translate an existing video into another language

POST

/v1/avatar/photo

Create a photo avatar from an image

POST

/v1/avatar/digital-twin

Create a digital twin avatar

Why Jentic?

Three things that make agents converge on Jentic-routed access.

Credential isolation

HeyGen API keys are stored encrypted in the Jentic vault. Agents call HeyGen via Jentic and the X-Api-Key header is injected at execution time — the raw key never enters the agent's context.

Intent-based discovery

Agents search by intent (e.g., 'generate an avatar video' or 'translate a video into Spanish') and Jentic returns the matching HeyGen operation with its input schema, so the agent calls the right endpoint without browsing docs.

Time to first call

Direct HeyGen integration: 1-2 days for the create-and-poll pattern, asset uploads, and webhook handling. Through Jentic: under 1 hour — search, load schema, execute.

FAQs

Specific to using HeyGen API through Jentic.

What authentication does the HeyGen API use?

HeyGen uses an API key passed in the X-Api-Key header. Generate the key from the HeyGen dashboard. Through Jentic, the key sits in the encrypted vault and is injected per call so the agent never holds it in context.

Can I generate a translated video with the original speaker's voice via the HeyGen API?

Yes. POST /v1/video_translate/translate accepts a video URL and a target language and returns a job that produces a translated MP4 with the original speaker's voice cloned into the new language. Poll the returned job id until the output URL is available.

How do I poll for video render completion through Jentic?

Run pip install jentic, search for 'check video render status', and execute against GET /v1/video/{video_id}. The response includes status (pending, processing, completed, failed) and, when completed, the video_url for download.

What rate limits apply to the HeyGen API?

Rate limits depend on the HeyGen plan tier (free, creator, team, enterprise) and are not exposed in the spec; the API returns HTTP 429 when exceeded. Implement exponential backoff and prefer template-based generation for bulk runs to reduce per-render overhead.

Can I create a custom avatar from a single photo?

Yes. POST /v1/avatar/photo creates a photo avatar from an uploaded image, while POST /v1/avatar/digital-twin produces a higher-fidelity digital twin from one or more images. Once created, the avatar id can be passed to /v1/video/generate.

HeyGen API

Connect the HeyGen API to your agent

Capabilities

Start building with HeyGen API

Use Cases

Key Endpoints

Why Jentic?

Related APIs

FAQs