Doubao TTS

Requires DOUBAO_SPEECH_API_KEY in .env. Set DOUBAO_SPEECH_VOICE_TYPE for the default voice, or pass voice_id to the tool.

Current API

Use the new-console API key flow:

X-Api-Key: ${DOUBAO_SPEECH_API_KEY}
X-Api-Resource-Id: seed-tts-2.0

Do not use X-Api-App-Id and X-Api-Access-Key with a new-console API Key. If the API returns load grant: requested grant not found, the key type or auth header is probably wrong.

For long-form video narration, prefer the async endpoint: