Discussions

We are using the HeyGen API Free Plan to test our integration with the 10 free credits provided. The goal is to dynamically interact with the avatar June_HR_public using the HeyGen Streaming SDK. The integration involves streaming tokenized text responses from OpenAI (via Buildship) to the HeyGen avatar for real-time speech.

Current Implementation:

We are calling the https://api.heygen.com/v1/streaming.create_token endpoint to generate a session token for the avatar.
The request includes:

{
"avatar_id": "June_HR_public"
}
with the appropriate Authorization: Bearer <API_KEY> header.

We initialize the avatar in an HTML div container using the HeyGen SDK (@heygen/sdk@2.0.0).

Issue:
The token request consistently fails with a 401 Unauthorized error, despite the following checks:

The avatar_id (June_HR_public) is active, public, and confirmed to be correct.
The API key is valid and configured in the SDK initialization.

What We Need:

Confirmation that the streaming.create_token endpoint is accessible with the Free Plan API key.
Any insights into why a 401 error might occur despite having a valid avatar and API key.
Guidance on whether additional permissions or configurations are needed to use the streaming.create_token endpoint with the Free Plan.
Debugging Steps Taken:

Verified the API request using both fetch and curl.
Confirmed the avatar’s status as ACTIVE and is_public: true.
Checked API key correctness and header structure.

Additional Information:
We are testing the integration on a custom WordPress page with the HeyGen SDK and dynamic streaming from OpenAI. Any insights or suggestions to resolve the token issue would be greatly appreciated.

Thank you