eSIM as a Service.
Connectivity infrastructure for products that ship worldwide.
The developer-first eSIM marketplace. Postgres-backed provisioning, Stripe prepaid billing, HMAC-signed webhooks, and our published retail rate exposed in the API — no NDA, no sales call, no contract to see the numbers.
eSIM as a Service (eSaaS) is a category: eSIM provisioning delivered as an on-demand API product instead of a wholesale carrier contract or a retail app. You POST an order, you get back an installable QR and LPA string in under fifteen seconds, and the underlying network supply is somebody else's operational problem.
SaaS turned software into infrastructure. PaaS did the same for platforms. IaaS did it for compute. eSaaS is what happens when eSIM provisioning becomes something a developer can add to a product in an afternoon rather than a business-development team can add in a quarter.
YonoSIM Business is an eSaaS platform. Postgres-backed orders, Stripe-backed prepaid billing, HMAC-signed lifecycle webhooks with retry and dead-letter, a white-label activation page, and our retail rate exposed in the API — no partner-only markup, no gated discount ladder. V1 is live at api.yonosim.com. The demo key below returns real responses against real network supply — not a fixture.
Six product surfaces the eSIM belongs on
If your product already touches the traveler — before, during, or after the trip — the connectivity attach belongs to you. Not to a fourth-party retail store.
Travel apps
Booking, itinerary, expense, and currency apps that already own the pre-trip surface. Attach a destination-scoped eSIM at checkout without sending the user to a fourth-party tab.
Talk to us about travel apps →Hotels & hospitality
Issue a branded eSIM on your own domain when an international guest checks in. Real-time usage webhooks let you upsell top-ups before they run out.
Talk to us about hotels & hospitality →Corporate travel
One policy-controlled data plan issued alongside the flight, expensed on the same card, reported on the same dashboard. No BYOD eSIM email fetch quest.
Talk to us about corporate travel →Travel insurance
Bundle a destination-matched eSIM into the trip-insurance PDF. Good-faith refund policy on activation failures — same consumer-facing rules apply, so support-triggered cases return the activation to your balance instead of eating margin silently.
Talk to us about travel insurance →Tour operators
Issue a shared regional plan to every guest on a multi-country tour. No fourth app to install, no per-country SIM roulette, no support tickets from the group WhatsApp.
Talk to us about tour operators →Fintech & neobanks
Credit-card benefits, neobank travel modes, business-card loyalty tiers. Data as a perk reads better than a lounge pass and costs less to deliver.
Talk to us about fintech & neobanks →V1 is live in production. Not on a roadmap slide.
- Postgres-backed persistence + hashed API keys
Orders, brandings, webhook subscriptions, delivery attempts, and a full balance ledger — every debit and credit is an append-only row. SHA-256 key lookup, per-key tier discount, rotate via CLI.
- Real eSIM provisioning across 200+ countries
POST /v1/orders issues a real ICCID and LPA string against live network supply, with two-phase saga semantics so a failed upstream call auto-rolls-back the balance debit.
- Stripe prepaid credit with idempotent webhooks
POST /v1/balance/recharge returns a Stripe Checkout URL. The checkout.session.completed webhook atomically credits the ledger with idempotency-key semantics — double-fires never double-credit.
- HMAC-SHA256 signed lifecycle webhooks
order.issued, order.activated, order.data.low, order.data.exhausted, order.refunded fire to your URL with signed headers, 30s / 5m / 1h / 6h exponential-backoff retry, and a dead-letter table after four failed attempts.
- White-label activation page
A branded QR + iOS/Android install page at api.yonosim.com/a/:orderId. Your logo, your primary color, your support email. No partner build required. Read more.
- One rate — our published retail
Same rate you see on yonosim.com, exposed in the API. No partner-only markup, no gated discount ladder. Volume rebates at ~$10k+/mo — just ask. Read more.
Real request. Real supply. No signup.
The demo key below is a shared Growth-tier sandbox with rotating test credit. Paste this into a terminal and you'll get back the live country catalog.
curl -H "Authorization: Bearer sk_test_growth_daf7d4add37757f28cb4c9e020b41da3fd0aca463ee0af0b" \
https://api.yonosim.com/v1/countriesFor your own sandbox key with dedicated test credit and a private Slack invite, request access — 24-hour turnaround. Every endpoint also has a Test Request button at api.yonosim.com/docs.
The developer tier of eSIM distribution, put on the internet.
| What you get | Raw wholesale APIs | Airalo Partners | Holafly | YonoSIM API |
|---|---|---|---|---|
| Rate visibility | NDA | NDA | No partner tier | Public retail, same in the API |
| Self-serve signup | No | No (sales call) | Retail only | Yes — 24h waitlist |
| 30-day no-usage auto-refund | No | No | No | Yes — automatic |
| Real-time usage webhooks | Partial | Partial | No | Yes — 5 lifecycle events |
| White-label activation | DIY | Yes (higher tier) | No | Yes — Growth tier and up |
| Time to first request | Weeks | 2–6 weeks | N/A | 15 minutes |
One rate. Our published retail. In your API.
Same rate a traveler pays on yonosim.com — exposed via the API for you to bundle inside your product. No partner-only markup, no gated discount ladder. Volume rebates against retail available at ~$10k+/mo on a per-key basis — email us when you get there.
Same rate as our consumer store, in your API. No partner-only markup, no gated discount ladder.
Sign up with a card, top up prepaid credit, first order in 15 minutes.
Activate one $6 eSIM a month and pay $6. No seat licensing, no contract under $10k MRR.
Private per-key rebate at ~$10k+/mo — email [email protected]. Bundled inside your product, your customer never sees ours.
Full live rate table at yonosim.com/developers/pricing.
Request Access.
24-hour turnaround. Real sandbox key with dedicated test credit, OpenAPI spec, and (on Growth tier and up) an invite to a private Slack channel with the founding team.
Read the launch post for the full V1 breakdown.