curl -H "Authorization: Bearer …" \ -H "X-Customer-API-Key: …" \ ".../developer/api/sims/?status=active" # 200 · count 142 · page 1/6
{ "iccid": "894446…0001", "status": "active", "tariff_name": "AAA-933", "cost": { "total_cost": "…" } }
We nearly broke our fingers wiring pipes into MNOs. APN names that slipped into chaos. RADIUS servers that fell over. Real-time data that went dark. We’ve spent 26 years mastering it: now it all sits in a few lines of code. The hidden infrastructure you don’t know you need, until it’s too late.
A personal Bearer token and your customer API key. Scoped to your group, revocable in one click, never your login password.
60 requests a minute, 1,500 an hour, burst of 10. Actionable errors, without the sensitive details.
Status, tariff, month-to-date data, overage and cost in GBP, shared bundles: the whole subscriber in a single typed object.
Page through every SIM in your customer-group scope. Filter by status, sub-customer or last-updated time.
A single SIM by its internal ID: live usage, cost and tariff. Out of scope returns a clean 404, never a leak.
POST a message to a SIM by ICCID: up to 160 characters, an optional correlation ID and a callback URL for the receipt.
# body { "message": "Hello from Simsonic" } # 202 Accepted { "message_id": "sms_a3f1…", "status": "sent", "iccid": "8944…0001", "msisdn": "883190…0001" }
When a message is delivered or expires, we POST a receipt to your callback URL over HTTPS, with your correlation ID intact.
Every response carries the full budget in its headers (minute, hour and burst), so you can back off before you ever hit a wall.
X-RateLimit-* headers on every response, so there is no guesswork.Free test tokens, mock SIMs and live activations to build against before you go near production.
Start buildingYour customer groups, dual-factor keys, delivery receipts and the full 60/min · 1,500/hr budget.
Get API keyHigher ceilings, sub-customer scoping and account support for fleets at national scale.
Talk to usThe same data the API returns, in a dashboard you do not have to build. Watch subscribers provision, identities attest and webhooks fire in real time, across every vertical you connect.
callback_url when you send an SMS and we POST the delivery receipt to it: delivered, expired or failed. No polling.Free sandbox, live test activations and an API reference you can run in the browser.