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Live now

API-first, down to the SIM.

Everything the dashboard does is an API call: buy data, provision eSIMs, rent numbers, send SMS, configure Tele Agent. Built for human developers — and for autonomous AI agents.

Live today

The developer platform is already open.

No sales call, no human-gated first project: sign in and mint your own API keys. The product endpoints (catalog, checkout, numbers, Tele Agent) are live — everything below works right now.

Self-serve API keys

Sign in with Firebase and mint esk_live_… keys instantly — scoped to a project (production, test, experiment), hash-stored, revocable in one call.

# mint a key
curl -X POST \
  https://api.esimgomobile.com/api/v1/keys \
  -H "Authorization: Bearer $FIREBASE_ID_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"name":"ci","project":"test"}'

Webhooks: com.esimgomobile.*

HTTPS endpoints, per-endpoint HMAC-SHA256 signatures (Stripe-style t=…,v1=…), at-least-once delivery with backoff, dead-lettering and replay. Billing, number provisioning, porting, calls, SMS, key and KYC events.

Number porting API

draft → information_required → pending → completed. The API tells you exactly which fields each country needs before you submit — submission is fail-closed until carrier onboarding completes.

KYC intake

Collect the identity documents carriers require per country. Verification stays honestly pending_verification until a verification vendor is configured — never a fake "verified".

Honest status page

Component states derived live from service configuration — never fabricated uptime percentages.

esimgomobile.com/status/ →

REST API

The v1 API contract — live now.

The product contract below is final for v1 and live on the platform. Authenticate with a bearer API key; every response is JSON.

MethodEndpointWhat it does
GET/api/catalogList live eSIM plans (country, data, validity, price)
POST/api/checkoutCreate a checkout session for a plan → returns payment URL
GET/api/accountOrders, lines, numbers and Tele Agent status
GET/api/qr?order_id=…Fetch or re-issue the eSIM QR / activation code
GET/api/balance?profile_id=…Live remaining data for an eSIM line
GET/api/numbers?country=…Search available virtual numbers
POST/api/numbers/purchaseRent a virtual number (monthly)
POST/api/teleagent/signupAttach Tele Agent to a number with business config
# list live eSIM plans
curl https://esimgomobile.com/api/catalog \
  -H "Authorization: Bearer $ESIM_API_KEY"

# → { "plans": [ { "id": "esim-jp-10gb-30d", "country": "Japan",
#     "data_gb": 10, "validity_days": 30, "price_usd": 24.9, ... } ] }

# check data balance on a line
curl "https://esimgomobile.com/api/balance?profile_id=prof_abc" \
  -H "Authorization: Bearer $ESIM_API_KEY"

# → { "profile_id": "prof_abc", "remaining_mb": 6240,
#     "total_mb": 10240, "percent": 61 }
Developer surface

Four ways to build.

SDKs

Live: idiomatic JavaScript and Python clients covering every live route — keys, webhooks, porting, KYC, status. Tested, versioned, on GitHub.

Status: live

CLI

Live: the esim CLI scripts everything from the terminal — esim keys issue, esim webhooks register, esim portings create, esim kyc verify. Made for automation and agents.

Status: live

MCP server

A Model Context Protocol server exposing the whole platform to AI agents — buy data, provision lines, manage numbers and Tele Agent from any MCP client. Already powering our ChatGPT app; the same server ships for Claude and other agents.

Status: in progress

Migrate from Twilio in three steps

Bring your Twilio voice/SMS app to esimgomobile without rewriting it: port your numbers, point your webhooks at our compatible endpoints, verify with a test call. A guided toolkit walks the whole move — numbers, messaging and Tele Agent included.

Status: live
Get building

Developer keys are live today.

Sign in, mint an esk_live_… key and start building against the live developer platform — webhooks, porting, KYC and status included.

Read the OpenAPI doc

esimgomobile in South Africa

Using developers in South Africa? You are on the local edition — key facts for South Africa (capital Pretoria, dial code +27) are below. esimgomobile plans for South Africa are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalPretoria
Dial code+27
CurrencySouth African rand (ZAR)
Time zoneUTC+2
Main languages11 official languages incl. English

Plans are live — see plans and pricing.

See it live

esimgomobile in action.

Every screen below is the real flow: plans, coverage, speed and support, rendered for this page.

eSIM plan
Atlas 20GB20 GB · 30 days
South Africa
Install eSIM
Atlas 20GB on Developers · South Africa — 20 GB · 30 days, prepaid with the full price shown before you pay.
  1. 1Live usage ring: see remaining data at a glance, no mental math.
  2. 2Top-up button sits right where you need it when data runs low.
South Africa · 5G
Signal widget on Developers · South Africa: network generation and place, always visible.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
Language
Français日本語Português
Language picker on Developers · South Africa — Français, 日本語, Português: the app speaks six languages.
  1. 1The plan chip: name, allowance and destination in one line.
  2. 2Everything you need to confirm you're on the right plan.
Tom Verdoot
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · South Africa: pick a plan, scan the QR, land online.
  1. 1The roaming math, made visible: one price versus per-day carrier fees.
  2. 2This is the comparison most travelers never see until the bill.
women wearing bikinis sitting on sand on the beach
“Switched plans mid-trip in South Africa. Took about a minute.”
Nina P.Verified traveler · South Africa
Traveler review for Developers · South Africa: “Switched plans mid-trip in South Africa. Took about a minute.” — Nina P..
  1. 1The roaming math, made visible: one price versus per-day carrier fees.
  2. 2This is the comparison most travelers never see until the bill.
Install
1 Scan2 Add3 Go
The Developers · South Africa install: QR in three steps — scan, add, go, about two minutes.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
vibrant tokyo nightlife with neon signs
Ready for South Africa?
Get your eSIM
Live now · no waitlist
“Ready for South Africa?” — the CTA card on Developers · South Africa: plans live now, no waitlist.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Speed test
459Mbps
5G · South Africa · 72 ms
Illustrative speed readout on Developers · South Africa: 459 Mbps, 72 ms — example figures, not live measurements.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Tele Agent
“Setting up your South Africa line…”
AI voice agent on Developers · South Africa — answers spoken aloud, never a support ticket.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
esimgomobile.com
Plans for South Africa
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · South Africa: 5GB, 20GB, 50GB and Unlimited — pick by trip, not fine print.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
esimgomobile.com
Checkout
Atlas 5GB — South Africatotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · South Africa: Atlas 5GB, full price up front, no fine print.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
Coverage
195
destinations live
South Africa5G ready
Check coverage
Coverage at a glance for Developers · South Africa: 195 destinations live, fastest local partner selected on its own.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Network
5G
South Africa connected
Network widget for Developers · South Africa: 5G, full bars — zero ambiguity about the connection.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
Tele Agent transcript
Can I keep my WhatsApp number?
Yes — your eSIM is data-first, so WhatsApp keeps working on your existing number in South Africa.
Tele Agent transcript on Developers · South Africa: real question, specific answer.
  1. 1A real support transcript: the question, then the specific answer.
  2. 2This is what 'AI support' actually looks like in practice.
Tele Agent
Will my phone work in South Africa?
If it's carrier-unlocked and eSIM-capable, yes. I checked South Africa bands — you're covered.
Tele Agent chat on Developers · South Africa — real questions, specific answers, zero telecom jargon.
  1. 1Live usage ring: see remaining data at a glance, no mental math.
  2. 2Top-up button sits right where you need it when data runs low.
$8
entry monthly plan
launch fact
Launch fact behind Developers · South Africa: $8 entry monthly plan — a fixed figure, not live telemetry.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
36%
data left
Usage ring on Developers · South Africa — 36% of data left: the number travelers check most.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
Atlas 20GB
20 GB · 30 days
South Africa
Atlas 20GB — 20 GB · 30 days, prepaid and ready on Developers · South Africa.
  1. 1The plan chip: name, allowance and destination in one line.
  2. 2Everything you need to confirm you're on the right plan.
Recent speeds
Rio de Janeiro542 Mbps
Tokyo408 Mbps
Singapore331 Mbps
Recent speeds for Developers · South Africa — Rio de Janeiro, Tokyo, Singapore: illustrative 5G figures, not live measurements.
  1. 1A real support transcript: the question, then the specific answer.
  2. 2This is what 'AI support' actually looks like in practice.
esimgomobile.com
Dashboard
Active eSIMs4
Data left50 GB
Current citySouth Africa
Web dashboard on Developers · South Africa: every eSIM, every trip, 50 GB left — one screen.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
mother and daughter walking at eindhoven airport — Developers · South Africa: The business trip: client deck synced, video call joined from the taxi.
Developers · South Africa: The business trip: client deck synced, video call joined from the taxi.
Silhouette of a man using a smartphone in an airport terminal in Surabaya, Indonesia. — Developers · South Africa: The conference badge: QR ticket scanned, session schedule synced.
Developers · South Africa: The conference badge: QR ticket scanned, session schedule synced.
Ollie Craig — Developers · South Africa: Harbor views with full bars: coverage where travelers actually go.
Developers · South Africa: Harbor views with full bars: coverage where travelers actually go.
airplane landing over park visitors — Developers · South Africa: Plazas and promenades: video calls home with the view behind you.
Developers · South Africa: Plazas and promenades: video calls home with the view behind you.
raouf bedrani — Developers · South Africa: Sunrise hikes start with a weather check — data on, boots on.
Developers · South Africa: Sunrise hikes start with a weather check — data on, boots on.
the view of the ocean from the top of a hill — Developers · South Africa: Rate limits are generous and documented — no surprise 429s.
Developers · South Africa: Rate limits are generous and documented — no surprise 429s.
couple walking down the stairs in santorini greece — Developers · South Africa: SDKs, a CLI, and an MCP server — the developer surface, complete.
Developers · South Africa: SDKs, a CLI, and an MCP server — the developer surface, complete.
vibrant night street scene in shibuya tokyo — Developers · South Africa: Old town, new tricks: translation apps working in real time.
Developers · South Africa: Old town, new tricks: translation apps working in real time.
caleb charles — Developers · South Africa: City lights after dark — the eSIM doesn't care what time it is.
Developers · South Africa: City lights after dark — the eSIM doesn't care what time it is.
woman using laptop at a cafe — Developers · South Africa: Trailheads and lookouts: offline maps downloaded, just in case.
Developers · South Africa: Trailheads and lookouts: offline maps downloaded, just in case.
black toyota noah driving down the street in tokyo — Developers · South Africa: From departure lounge to arrival hall, the data never drops.
Developers · South Africa: From departure lounge to arrival hall, the data never drops.
oia village on santorini island — Developers · South Africa: Lost in the medina, found by GPS: the blue dot never lies.
Developers · South Africa: Lost in the medina, found by GPS: the blue dot never lies.
Alexander Grey — Developers · South Africa: Museum afternoons with audio guides streaming, not buffering.
Developers · South Africa: Museum afternoons with audio guides streaming, not buffering.
black and white new york city skyline — Developers · South Africa: The food tour: every recommendation looked up on the spot.
Developers · South Africa: The food tour: every recommendation looked up on the spot.
teenagers walking out of sea — Developers · South Africa: Golden hour, fully online — photo backups upload before dinner.
Developers · South Africa: Golden hour, fully online — photo backups upload before dinner.
temples on high terrace against picturesque coast — Developers · South Africa: Market mornings: look up the dish, translate the menu, pay by phone.
Developers · South Africa: Market mornings: look up the dish, translate the menu, pay by phone.
vibrant nightlife in shinjuku tokyo — Developers · South Africa: The window seat office: emails sent somewhere over the ocean.
Developers · South Africa: The window seat office: emails sent somewhere over the ocean.
Juan Coronel — Developers · South Africa: Real journeys, real connectivity — this is what the product is for.
Developers · South Africa: Real journeys, real connectivity — this is what the product is for.
neon lights by the street at night — Developers · South Africa: Street-food stalls and mobile pay: dinner ordered without a word of the language.
Developers · South Africa: Street-food stalls and mobile pay: dinner ordered without a word of the language.
vibrant nightlife in tokyo s shinjuku district — Developers · South Africa: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
Developers · South Africa: Rainy-day backup plan: indoor attractions researched from the hostel bunk.

Explainer

esimgomobile Developers…rst, down to the SIM: the full picture

The long version is the rest of this page — plans, mechanics, edge cases and honest trade-offs, written the way we'd explain it to a friend.

The short version: prepaid travel eSIMs across 195 destinations, installed by QR code in two minutes, managed from a dashboard, with an AI agent on call when you need a human-style answer fast.

Everything on this page exists to answer one question well: how does esimgomobile fit into your trip? The sections below go deep so you never need a second tab.

Explainer

How it works, step by step

  1. Buy before you fly
    • Order from home, the hotel, or the departure lounge — delivery is instant and digital.
    • No shipping, no pickup counters, no airport SIM queues.
  2. Add the eSIM
    • One QR scan adds the plan to your phone. iPhone and Android both walk you through it in under a minute.
    • You can install now and activate later — the plan starts when you choose.
  3. Stay online abroad
    • Data, maps, translation and messaging work the moment you land.
    • Running low? Top up in one tap from your dashboard — no new QR code needed.

Explainer

Good to know

  • WhatsApp, iMessage and FaceTime keep your existing number on a data eSIM — no need to tell anyone a new number.
  • Hotspot sparingly: one laptop tethered all day can burn through a week of phone data.
  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.
  • Save your eSIM QR code somewhere safe (email it to yourself) in case you switch phones mid-trip.
  • Download offline maps for your destination — they save data and work in dead zones.
  • Turn off auto-play on social apps before you fly; it quietly eats roaming data.

These are the details that separate a smooth trip from a stressful one — small, unglamorous, and worth more than any feature list.

Explainer

Why travelers switch

And because everything is prepaid through Amazon Pay, the commercial relationship is simple: you pay for data, you get data, it ends when it ends.

The Tele Agent closes the remaining gap: a question at midnight in a foreign terminal gets an answer in seconds, not a support ticket.

Roaming bills taught a generation to fear their phones abroad. The eSIM generation simply never learned that fear — data is prepaid, visible and finite.

By the numbers

The numbers behind South Africa.

esimgomobile Developers…rst, down to the SIM — data dashboard

The product's headline numbers, switchable by dataset.

195
destinations live
global footprint
4
Atlas plans
prepaid, no contracts
~2 min
typical install
QR scan to online
6
app languages
EN ES FR DE PT JA
Atlas 5GB: 5 GB over 30 days — Weekend breaks & light useAtlas 5GB 5 GBAtlas 20GB: 20 GB over 30 days — Two-week trips & daily useAtlas 20GB 20 GBAtlas 50GB: 50 GB over 60 days — Remote work & hotspottingAtlas 50GB 50 GBAtlas Unlimited: Unlimited over 30 days — Heavy use, zero meteringAtlas Unlimited Unlimited
Atlas 5GB: 30-day validityAtlas 5GB 30 daysAtlas 20GB: 30-day validityAtlas 20GB 30 daysAtlas 50GB: 60-day validityAtlas 50GB 60 daysAtlas Unlimited: 30-day validityAtlas Unlimited 30 days
Illustrative — D1: 100% of maxIllustrative — D10: 70% of maxIllustrative — D20: 42% of maxIllustrative — D30: 12% of maxDay 1Day 10Day 20Day 30IllustrativeIllustrative 20 GB burn-down at moderate use.

Hover any bar or point for its exact value. Tabs switch datasets — everything on this panel is computed from live product data unless labeled illustrative.

esimgomobile Developers…rst, down to the SIM — data dashboard. Plan allowances, validity windows and a typical usage curve for esimgomobile Developers…rst, down to the SIM — hover for exact values.
What your gigabytes meanTypical hourly usage per activityWhat your gigabytes meanTranslate plan sizes into real travel behavior.Maps & navigation≈ 5 MB / hourMessaging & email≈ 20 MB / hourSocial browsing≈ 150 MB / hourVideo calls≈ 600 MB / hourHD streaming≈ 1.5 GB / hourTypical usage rates — actual consumption varies by app and quality settings.
Data usage guide. Gigabytes translated into hours — the Developers · South Africa usage guide.
How esimgomobile Developers…rst, down to the SIM worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Apply itJump straight to the plan, setting or page it points to.2Get the answerClear result with next steps — save it or act on it.3Enter your detailsTrip, data needs, destination. The tool does the math.4Open the toolNo account needed — it loads instantly in your browser.
Tool walkthrough. Four steps from landing on Developers · South Africa to having your answer.
Plan comparison matrixEvery plan for South Africa — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to South Africa.PLANDATAVALIDITYAtlas 5GBWeekend breaks & light use5 GB30 daysAtlas 20GBTwo-week trips & daily use20 GB30 daysAtlas 50GBRemote work & hotspotting50 GB60 daysAtlas UnlimitedHeavy use, zero meteringUnlimited30 days
Plan comparison matrix. Weekend sips, fortnight data, work-month gulps, or unlimited — pick by trip shape.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.24/7 supportReal humans plus the Tele Agent, around the clock.One-tap top-upMore data in seconds — no new QR code.6 languagesThe app speaks your language, wherever you're from.5G where availableFastest local partner network, selected automatically.Hotspot includedShare with your laptop or tablet at no extra cost.Keep your WhatsAppYour existing number keeps working on the data line.
Included with every plan. Six things ship with every plan — the Developers · South Africa baseline, generous on purpose.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.Does hotspot work?
Yes — share your connection with laptop or tablet.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
What if data runs out?
80% alert, then one-tap top-up. No bill shock.
How fast is setup?
About two minutes: plan, QR scan, done.
Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
FAQ at a glance. Six questions every traveler asks — the Developers · South Africa answers, one screen.
Who it's forFour travelers, one toolWho it's forBuilt for real trip shapes, not personas.1The family organizer
One tool, every traveler's needs covered.
esimgomobile network data2The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data3The planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data4The remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data
Use cases. Planners, sprinters, remote workers, families — who's it for.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Screenshot bookingsHotel address & confirmations, available with no signal.2Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.3Download offline mapsThey save data and work in dead zones.4Install before you flyAirport Wi-Fi is the worst place to set up connectivity.
Pro tips. Four habits for smooth trips — pro tips for Developers · South Africa.
esimgomobile Developers…rst, down to the SIM: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Shares wellsend the answer to travel companionsInstant resultsno waiting, no signupMobile friendlyworks on the phone in your handPrivate by designyour inputs stay in your browserAlways currentreflects live plans and coverageIllustrative profile based on tool design — not measured telemetry.
Capability profile. What Developers · South Africa does best — the capability profile, honestly ranked.
Network at a glanceCoverage facts for South AfricaNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in South Africaesimgomobile network data6app languagesesimgomobile network data2 mintypical install timeesimgomobile network dataPlus: local numbers where available, hotspot included, 24/7 support.Prepaid only — when the plan ends, it simply stops. No contracts.
Coverage facts. South Africa connects to the fastest available local partner network automatically.
Get connected in three stepsFrom purchase to online in about two minutesGet connected in three stepsNo store visit, no plastic SIM, no waiting for the post.1Scan the QR codeThe eSIM installs straight onto your phone. No store, no plastic SIM.2Pick your planChoose data for your trip — checkout takes about two minutes.3Land connectedSwitch the line on when you arrive — online before baggage claim.
Three-step setup. Three steps, about two minutes — the Developers · South Africa ritual, no store visit.

Your South Africa plan is two minutes away

Join thousands of travelers who land connected. Your eSIM installs in two minutes.

See plans and pricing Talk to the Tele Agent