{"entry":{"slug":"textbelt-api","name":"Textbelt","category":"api","summary":"Send one SMS with a single POST; a free test key needs no account.","description":"","auth_mode":"Key in body (free 'textbelt' test key)","endpoint":"https://textbelt.com/text","docs_url":"https://docs.textbelt.com/","tags":["sms","messaging"],"capabilities":["send sms","send text message"],"auth_params":[{"name":"key","location":"body","required":true}],"input_format":"application/x-www-form-urlencoded","output_format":"application/json","rate_limit":"1 free SMS/day per IP with the test key","pricing":"Pay per credit","invocation_example":"curl -X POST https://textbelt.com/text --data-urlencode phone=+15551234567 --data-urlencode \"message=hi\" -d key=textbelt","verified":false,"verified_at":null,"featured":false,"checks_total":59,"checks_ok":59,"avg_latency_ms":193,"reports_count":0,"health_ok":true,"health_status_code":200,"health_checked_at":"2026-11-06T14:17:23.75+00:00","health_latency_ms":169,"probe_url":null},"watch":{"hint":"Follow \"textbelt-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\":\"textbelt-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."}}