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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 Australia

Using developers in Australia? You are on the local edition — key facts for Australia (capital Canberra, dial code +61) are below. esimgomobile plans for Australia are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalCanberra
Dial code+61
CurrencyAustralian dollar (AUD)
Time zoneUTC+10
Main languagesEnglish

Plans are live — see plans and pricing.

How it works

esimgomobile in action.

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

esimgomobile.com
people working as call center agents
esimgomobile Developers
Travel guides · 8 min read
From the blog: “esimgomobile Developers” — travel guides in about eight minutes.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Australia
The honest comparison on Developers · Australia: one prepaid eSIM price versus carrier roaming.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Recent speeds
Paris459 Mbps
Bangkok577 Mbps
New York641 Mbps
Recent speeds for Developers · Australia — Paris, Bangkok, New York: illustrative 5G figures, not live measurements.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
esimgomobile.com
Checkout
Atlas Unlimited — Australiatotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · Australia: Atlas Unlimited, 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.
Australia · coverage
5 carriers · automatic selection
Coverage map on Developers · Australia: partner networks pinned, selection automatic.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
dome of church on sea coast in greece
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · Australia: pick a plan, scan the QR, land online.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Install
1 Scan2 Add3 Go
The Developers · Australia install: QR in three steps — scan, add, go, about two minutes.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
Virtual number
+1 205 472 7646
Routes toAustralia
SMS + voiceEnabled
Your second line on Developers · Australia: +1 205 472 7646 — real number, SMS and voice enabled.
  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.
eSIM installedYour Australia plan is ready.
Push · just now
Push notification on Developers · Australia: eSIM installed, plan ready to activate.
  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.
Tele Agent transcript
Will my phone work in Australia?
If it's carrier-unlocked and eSIM-capable, yes. I checked Australia bands — you're covered.
Tele Agent transcript on Developers · Australia: 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.
picturesque view of santorini s iconic architecture
Australia
eSIM dataLive
Local numberAvailable
5GYes
Coverage card on Developers · Australia: data live, local number available, 5G where it exists.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
31
free tools
launch fact
Launch fact behind Developers · Australia: 31 free tools — 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.
esimgomobile.com
Dashboard
Active eSIMs2
Data left10 GB
Current cityAustralia
Web dashboard on Developers · Australia: every eSIM, every trip, 10 GB left — one screen.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · Australia — 195 destinations live, 31 free tools, $8 entry monthly plan: numbers we publish and stand behind.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
green cactus plant near white concrete wall
Pack light. Stay connected in Australia.
Get your eSIM
Live now · no waitlist
“Pack light. Stay connected in Australia.” — the CTA card on Developers · Australia: 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
737Mbps
5G · Australia · 54 ms
Illustrative speed readout on Developers · Australia: 737 Mbps, 54 ms — example figures, not live measurements.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
esimgomobile.com
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"AU"}'
200 OK · 63 ms
REST API behind Developers · Australia: issue eSIMs programmatically — 200 OK in milliseconds.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
Atlas 50GB
50 GB · 60 days
Australia
Atlas 50GB — 50 GB · 60 days, prepaid and ready on Developers · Australia.
  1. 1The plan chip: name, allowance and destination in one line.
  2. 2Everything you need to confirm you're on the right plan.
Network
5G
Australia connected
Network widget for Developers · Australia: 5G, full bars — zero ambiguity about the connection.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Support
How does Developers · Australia work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · Australia: what it does, in one honest answer.
  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.
Марина Вотинцева — Developers · Australia: Build on the same rails the Australia checkout uses.
Developers · Australia: Build on the same rails the Australia checkout uses.
people on a video call — Developers · Australia: Market mornings: look up the dish, translate the menu, pay by phone.
Developers · Australia: Market mornings: look up the dish, translate the menu, pay by phone.
a backpacker looking at the scenery while standing on the edge of a mountain — Developers · Australia: Sandbox first: test provisioning without spending a cent.
Developers · Australia: Sandbox first: test provisioning without spending a cent.
Hipster with a beard and sunglasses in a city square holding a smartphone. — Developers · Australia: Platform to platform: tickets, timetables and taxis in one hand.
Developers · Australia: Platform to platform: tickets, timetables and taxis in one hand.
using a laptop and drinking coffee — Developers · Australia: The business trip: client deck synced, video call joined from the taxi.
Developers · Australia: The business trip: client deck synced, video call joined from the taxi.
person using gray laptop — Developers · Australia: Lost in the medina, found by GPS: the blue dot never lies.
Developers · Australia: Lost in the medina, found by GPS: the blue dot never lies.
red metal bridge — Developers · Australia: Every endpoint returns the same shape — learn one, know them all.
Developers · Australia: Every endpoint returns the same shape — learn one, know them all.
midsection of man using mobile phone while sitting on table — Developers · Australia: The sunrise ferry: tickets in the wallet app, timetable cached offline.
Developers · Australia: The sunrise ferry: tickets in the wallet app, timetable cached offline.
Josh Sorenson — Developers · Australia: Old town, new tricks: translation apps working in real time.
Developers · Australia: Old town, new tricks: translation apps working in real time.
man in cap sitting by table with laptop — Developers · Australia: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
Developers · Australia: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
teddy bear sitting atop luggage left in airport — Developers · Australia: The museum queue skips itself: tickets bought online, straight to the door.
Developers · Australia: The museum queue skips itself: tickets bought online, straight to the door.
view of illuminated signs on buildings in tokyo at night — Developers · Australia: Island time, online time: ferries, beaches and full signal.
Developers · Australia: Island time, online time: ferries, beaches and full signal.
Zaiwizi — Developers · Australia: Night markets and late trains — connected the whole way through.
Developers · Australia: Night markets and late trains — connected the whole way through.
man with a backpack standing on a mountain slope — Developers · Australia: Sunrise hikes start with a weather check — data on, boots on.
Developers · Australia: Sunrise hikes start with a weather check — data on, boots on.
turquoise door and window on white concrete wall — Developers · Australia: The commute, handled: podcasts downloaded, messages sent, no dead zones.
Developers · Australia: The commute, handled: podcasts downloaded, messages sent, no dead zones.
a man in white long sleeves looking at the document — Developers · Australia: Museum afternoons with audio guides streaming, not buffering.
Developers · Australia: Museum afternoons with audio guides streaming, not buffering.
people walking on brown sand — Developers · Australia: The food tour: every recommendation looked up on the spot.
Developers · Australia: The food tour: every recommendation looked up on the spot.
cozy cafe workspace with laptop and drink — Developers · Australia: One curl call provisions a Australia eSIM — 200 OK in milliseconds.
Developers · Australia: One curl call provisions a Australia eSIM — 200 OK in milliseconds.
LIU LIU — Developers · Australia: The long layover: streaming, working and messaging, all covered.
Developers · Australia: The long layover: streaming, working and messaging, all covered.
eiffel tower with parisian architecture — Developers · Australia: The last night: photo album backed up, memories safe before wheels-up.
Developers · Australia: The last night: photo album backed up, memories safe before wheels-up.

Explainer

esimgomobile Developers: the full picture

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.

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.

Explainer

How it works, step by step

  1. Pick your plan
    • Choose data for your trip length — 5 GB covers a long weekend, 20 GB a fortnight, 50 GB or Unlimited a month of heavy use.
    • Checkout takes about two minutes through the secure Amazon Pay checkout.
  2. Scan the QR code
    • Your eSIM arrives instantly. Open your phone camera, scan, and the plan installs itself.
    • No store visit, no plastic SIM, no waiting for the post.
  3. Land connected
    • Turn on data roaming for the eSIM line when you land — you're online before baggage claim.
    • The eSIM finds the local partner network automatically.

Explainer

Good to know

  • WhatsApp, iMessage and FaceTime keep your existing number on a data eSIM — no need to tell anyone a new number.
  • Buy and install your eSIM before departure — airport Wi-Fi is the worst place to set up connectivity.
  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.
  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.
  • Turn off auto-play on social apps before you fly; it quietly eats roaming data.
  • Charge your phone before long travel days; weak signal areas drain batteries faster.

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

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

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.

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

Visual guides

The numbers behind Australia.

esimgomobile Developers — 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 — data dashboard. Plan allowances, validity windows and a typical usage curve for esimgomobile Developers — hover for exact values.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.2Check unlock statusCarrier-locked phones can't add an eSIM — verify first.3Install before you flyAirport Wi-Fi is the worst place to set up connectivity.4Set an 80% alertA top-up should never surprise you mid-trip.
Pro tips. Veterans do all four without thinking.
Plan comparison matrixEvery plan for Australia — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Australia.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. All four Atlas plans work in Australia; pick by trip length and appetite for data.
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. A 20 GB plan covers roughly two weeks of normal travel use.
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.1Pick your planChoose data for your trip — checkout takes about two minutes.2Scan the QR codeThe eSIM installs straight onto your phone. No store, no plastic SIM.3Land connectedSwitch the line on when you arrive — online before baggage claim.
Three-step setup. Install days before departure or minutes before boarding — your call.
How esimgomobile Developers worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Get the answerClear result with next steps — save it or act on it.2Open the toolNo account needed — it loads instantly in your browser.3Apply itJump straight to the plan, setting or page it points to.4Enter your detailsTrip, data needs, destination. The tool does the math.
Tool walkthrough. Four steps from landing on Developers · Australia to having your answer.
Network at a glanceCoverage facts for AustraliaNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Australiaesimgomobile 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. Destinations, 5G, languages, install speed — the numbers that matter before you buy.
esimgomobile Developers: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Mobile friendlyworks on the phone in your handAlways currentreflects live plans and coverageInstant resultsno waiting, no signupShares wellsend the answer to travel companionsPrivate by designyour inputs stay in your browserIllustrative profile based on tool design — not measured telemetry.
Capability profile. Capabilities measured by traveler value, not feature count.
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.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.5G where availableFastest local partner network, selected automatically.Keep your WhatsAppYour existing number keeps working on the data line.Hotspot includedShare with your laptop or tablet at no extra cost.6 languagesThe app speaks your language, wherever you're from.One-tap top-upMore data in seconds — no new QR code.24/7 supportReal humans plus the Tele Agent, around the clock.
Included with every plan. Six things ship with every plan — the Developers · Australia baseline, generous on purpose.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
How fast is setup?
About two minutes: plan, QR scan, done.
Does hotspot work?
Yes — share your connection with laptop or tablet.
What if data runs out?
80% alert, then one-tap top-up. No bill shock.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
FAQ at a glance. Still curious? The Tele Agent answers anything else instantly.

Ready when Australia is

Prepaid, no contracts, no roaming surprises. The whole setup takes about two minutes.

See plans and pricing Talk to the Tele Agent