Approval before sending
Every business account starts in review so live traffic stays consent-based and carrier friendly.
SMS credits, API keys, and compliance gates
SMS API for approved business notifications.
Text King gives small teams a Textbelt-simple API for consent-based operational SMS: appointment reminders, order updates, account alerts, and support follow-ups from businesses that pass review.
Live send requestqueued
curl -X POST https://text-king.com/v1/messages \
-H "Authorization: Bearer tk_live_..." \
-d to="+14155550123" \
-d message="Text King for Acme Supply: Your order is ready for pickup. Reply STOP to opt out." \
-d consent=trueOperational SMS first
Send appointment reminders, order updates, account alerts, and support follow-ups after approval.
API under the hood
Textbelt-style simplicity with paid credits, quota checks, and delivery callbacks.
Public business and consent review
Text King is not for cold outreach or purchased lists. Business customers buy credits, submit their use case, and stay pending until Text King verifies the sender identity, message purpose, recipient opt-in path, and sample messages.
Operator
Text King is operated by Trendy Analysis Software Corp. for approved small-business SMS programs.
Reviewed use cases
New keys are manually checked for business identity, message purpose, sample content, and consent proof.
Consent evidence
Senders must keep auditable opt-in records and show the recipient consent path before live sends are enabled.
Textbelt-simple API
The first production surface is intentionally small: send a single SMS, spend credits, track delivery, and respect opt-outs.
POST /v1/messages sends one consent-based SMS.
Authorization uses a Bearer API key, or a key form field for simple clients.
GET /quota/:key returns remaining credits and account review status.
GET /status/:textId returns current delivery status for a send.
One credit is one SMS segment; long messages spend multiple credits.
Replies containing STOP, QUIT, END, CANCEL, UNSUBSCRIBE, OPT OUT, or REVOKE block future sends.
Business SMS guides
Start with the core API page, compare the prepaid model, or review a concrete appointment reminder use case before buying credits.
Business SMS API
See the approved-sender API shape for reminders, alerts, and support follow-ups.
Textbelt alternative
Compare prepaid SMS credits with Text King's review-first business account surface.
Appointment reminder SMS API
Review a practical reminder workflow with consent, credits, and STOP handling.
Prepaid launch pricing
Enter an existing API key to refill it, or leave the key blank to create a new one. New keys start in review before live sends are enabled.