This TTS service for Mycroft requires a subscription to ElevenLabs. It is not very robust, but works well.
Configuration parameters:
"tts": {
"module": "elevenlabs_tts",
"elevenlabs": {
"voiceId": "THE_ID_OF_THE_VOICE_YOU_WANT",
"apiKey": "YOUR_ELEVENLABS_API_KEY"
}
}