9bits Developers

One API for every channel

Reach any phone, in any market, in one API call.

SMS, email, voice, and VAS shortcodes across multiple markets and mobile networks. One bearer token, one base URL, structured errors, and a live console so you can test every endpoint right here in the browser.

Send your first SMS

Explore the API reference

curl -X POST https://api.9bits.net/ng/v1/sendsms \
  -H "Authorization: Bearer $NINEBITS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "9bits",
    "to": ["2348020000000"],
    "content": "Your code is 481920."
  }'

# → 200 OK
# { "reference_id": "fdab8f46df…", "status": "accepted", "recipients_accepted": 1 }

Choose a channel

Every service shares the same token, error format, and webhook conventions.

SMS

A2P messaging with delivery receipts, cost estimates before you send, and idempotent retries.

Transactional email with templates, contact lists, suppressions, domain authentication and stats.

Voice

Deliver a recorded audio message to up to 1,000 numbers in a single request.

VAS & Two-Way SMS

Shortcode services: receive subscriber messages, reply in-session, and track the subscription lifecycle.

Approved templates and free-form session messages on WhatsApp Business, with per-message cost and category.

Build it properly

The things that separate a demo from a production integration.

Webhooks

Receive delivery receipts and inbound messages. Retry schedule, acknowledgement rules, and how to stay idempotent.

Error reference

Every error code the API can return, what causes it, and whether retrying will help.

Idempotency & retries

How to retry a send after a timeout without billing your customer twice.

Encoding & pricing

Why one emoji can double your SMS bill, and how to predict cost before you send.