{"entry":{"slug":"cartesia-api","name":"Cartesia","category":"api","summary":"Low-latency text-to-speech with voice cloning, built for realtime agents.","description":"","auth_mode":"X-API-Key header","endpoint":"https://api.cartesia.ai/tts/bytes","docs_url":"https://docs.cartesia.ai/api-reference","tags":["speech","audio"],"capabilities":["text to speech","voice synthesis","realtime voice"],"auth_params":[{"name":"X-API-Key","location":"header","required":true}],"input_format":"application/json","output_format":"audio/mpeg or raw PCM","rate_limit":"Plan dependent","pricing":"Free tier credits","invocation_example":"","verified":false,"verified_at":null,"featured":false,"checks_total":58,"checks_ok":58,"avg_latency_ms":147,"reports_count":0,"health_ok":true,"health_status_code":405,"health_checked_at":"2026-11-06T06:18:38.877+00:00","health_latency_ms":73,"probe_url":null},"watch":{"hint":"Follow \"cartesia-api\": get alerted when it goes down, comes back, or changes shape. Free, 3 tools per key. Email follows are confirmed by a one-click email before alerts start.","how":"POST https://agentnexus.app/api/public/watch with {\"slug\":\"cartesia-api\"} and your x-api-key (the key's email gets the alerts), or add \"email\" / \"webhook_url\". Email follows must be confirmed from the inbox before alerts start."}}