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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 Luxembourg

Using developers in Luxembourg? You are on the local edition — key facts for Luxembourg (capital Luxembourg, dial code +352) are below. esimgomobile plans for Luxembourg are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalLuxembourg
Dial code+352
CurrencyEuro (EUR)
Time zoneUTC+1
Main languagesLuxembourgish, French, German

Plans are live — see plans and pricing.

Up close

The product, up close.

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

57%
data left
Usage ring on Developers · Luxembourg — 57% of data left: the number travelers check most.
  1. 1The plan chip: name, allowance and destination in one line.
  2. 2Everything you need to confirm you're on the right plan.
Coverage
195
destinations live
Luxembourg5G ready
Check coverage
Coverage at a glance for Developers · Luxembourg: 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.
Install
1 Scan2 Add3 Go
The Developers · Luxembourg install: QR in three steps — scan, add, go, about two minutes.
  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.
a man standing on top of the mountain
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · Luxembourg: 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.
Atlas 50GB
50 GB · 60 days
Luxembourg
Atlas 50GB — 50 GB · 60 days, prepaid and ready on Developers · Luxembourg.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
oia village on santorini
“My hotspot ran the whole Airbnb in Luxembourg for two weeks.”
Omar H.Verified traveler · Luxembourg
Traveler review for Developers · Luxembourg: “My hotspot ran the whole Airbnb in Luxembourg for two weeks.” — Omar H..
  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.
pensive man looking at laptop
Luxembourg
eSIM dataLive
Local numberAvailable
5GYes
Coverage card on Developers · Luxembourg: data live, local number available, 5G where it exists.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
eSIM plan
Atlas 50GB50 GB · 60 days
Luxembourg
Install eSIM
Atlas 50GB on Developers · Luxembourg — 50 GB · 60 days, prepaid with the full price shown before you pay.
  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 Luxembourg line…”
AI voice agent on Developers · Luxembourg — 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.
195
destinations live
launch fact
Launch fact behind Developers · Luxembourg: 195 destinations live — a fixed figure, not live telemetry.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Support
How does Developers · Luxembourg work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · Luxembourg: what it does, in one honest answer.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Network
5G
Luxembourg connected
Network widget for Developers · Luxembourg: 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.
Luxembourg · coverage
5 carriers · automatic selection
Coverage map on Developers · Luxembourg: 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?
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Luxembourg
The honest comparison on Developers · Luxembourg: 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.
Speed test
535Mbps
5G · Luxembourg · 18 ms
Illustrative speed readout on Developers · Luxembourg: 535 Mbps, 18 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.
Recent speeds
Istanbul173 Mbps
Barcelona442 Mbps
Mexico City413 Mbps
Recent speeds for Developers · Luxembourg — Istanbul, Barcelona, Mexico City: illustrative 5G figures, not live measurements.
  1. 1Mockups illustrate the product flow — captions describe what's real.
  2. 2Figures labeled as examples show sample data, never live telemetry.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · Luxembourg — 195 destinations live, 31 free tools, $8 entry monthly plan: numbers we publish and stand behind.
  1. 1A real support transcript: the question, then the specific answer.
  2. 2This is what 'AI support' actually looks like in practice.
eSIM installedYour Luxembourg plan is ready.
Push · just now
Push notification on Developers · Luxembourg: eSIM installed, plan ready to activate.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
esimgomobile.com
Checkout
Atlas 20GB — Luxembourgtotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · Luxembourg: Atlas 20GB, 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.
Tele Agent
Will my phone work in Luxembourg?
If it's carrier-unlocked and eSIM-capable, yes. I checked Luxembourg bands — you're covered.
Tele Agent chat on Developers · Luxembourg — 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.
eifel tower from the port liena — Developers · Luxembourg: Sandbox first: test provisioning without spending a cent.
Developers · Luxembourg: Sandbox first: test provisioning without spending a cent.
modern workspace with laptop and tea in izmir cafe — Developers · Luxembourg: Duty-free browsing: price-checked against home before buying.
Developers · Luxembourg: Duty-free browsing: price-checked against home before buying.
a man having a video call on his laptop — Developers · Luxembourg: The welcome home: eSIM deleted in one tap, no contract to cancel.
Developers · Luxembourg: The welcome home: eSIM deleted in one tap, no contract to cancel.
group of people working together — Developers · Luxembourg: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Developers · Luxembourg: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
person holding blue smartphone — Developers · Luxembourg: Old town, new tricks: translation apps working in real time.
Developers · Luxembourg: Old town, new tricks: translation apps working in real time.
people brainstorming in office — Developers · Luxembourg: The status page is public — uptime you can verify, not claim.
Developers · Luxembourg: The status page is public — uptime you can verify, not claim.
Enrique — Developers · Luxembourg: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Developers · Luxembourg: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
woman having video call — Developers · Luxembourg: The group chat stays live across every border you cross.
Developers · Luxembourg: The group chat stays live across every border you cross.
positive mother and daughter with suitcase in airport corridor — Developers · Luxembourg: Currency exchange, skipped: the phone pays at the real rate.
Developers · Luxembourg: Currency exchange, skipped: the phone pays at the real rate.
eiffel tower with parisian architecture — Developers · Luxembourg: Street level: navigation, rideshares and reviews, all instant.
Developers · Luxembourg: Street level: navigation, rideshares and reviews, all instant.
open laptop displaying video conference call — Developers · Luxembourg: The connected trip: maps, messages and translation, all on one eSIM.
Developers · Luxembourg: The connected trip: maps, messages and translation, all on one eSIM.
man conferring online with woman — Developers · Luxembourg: The modern arrival: online before the seatbelt sign goes off.
Developers · Luxembourg: The modern arrival: online before the seatbelt sign goes off.
man on the peak of a mountain — Developers · Luxembourg: Webhooks tell you when data runs low, plans expire, top-ups land.
Developers · Luxembourg: Webhooks tell you when data runs low, plans expire, top-ups land.
person video calling using a laptop — Developers · Luxembourg: The departure board flips: gate found, lounge located, all on the eSIM.
Developers · Luxembourg: The departure board flips: gate found, lounge located, all on the eSIM.
a smartphone with a black screen — Developers · Luxembourg: Museum afternoons with audio guides streaming, not buffering.
Developers · Luxembourg: Museum afternoons with audio guides streaming, not buffering.
diverse coworkers having online conference in modern office — Developers · Luxembourg: One curl call provisions a Luxembourg eSIM — 200 OK in milliseconds.
Developers · Luxembourg: One curl call provisions a Luxembourg eSIM — 200 OK in milliseconds.
Antoine Pittet — Developers · Luxembourg: The sunrise ferry: tickets in the wallet app, timetable cached offline.
Developers · Luxembourg: The sunrise ferry: tickets in the wallet app, timetable cached offline.
eiffel tower in paris — Developers · Luxembourg: The business trip: client deck synced, video call joined from the taxi.
Developers · Luxembourg: The business trip: client deck synced, video call joined from the taxi.
Zizi zi — Developers · Luxembourg: SDKs, a CLI, and an MCP server — the developer surface, complete.
Developers · Luxembourg: SDKs, a CLI, and an MCP server — the developer surface, complete.
back camera of a smartphone in close up photography — Developers · Luxembourg: The conference badge: QR ticket scanned, session schedule synced.
Developers · Luxembourg: The conference badge: QR ticket scanned, session schedule synced.

Explainer

esimgomobile Developers: the full picture

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 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.

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

  • 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.
  • Charge your phone before long travel days; weak signal areas drain batteries faster.
  • 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.
  • Buy and install your eSIM before departure — airport Wi-Fi is the worst place to set up connectivity.

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.

By the numbers

The numbers behind Luxembourg.

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.
Network at a glanceCoverage facts for LuxembourgNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Luxembourgesimgomobile 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.Shares wellsend the answer to travel companionsMobile friendlyworks on the phone in your handAlways currentreflects live plans and coveragePrivate by designyour inputs stay in your browserInstant resultsno waiting, no signupIllustrative profile based on tool design — not measured telemetry.
Capability profile. Ranked by what travelers notice first, not by marketing priority.
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.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
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.
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.
FAQ at a glance. Six questions every traveler asks — the Developers · Luxembourg answers, one screen.
Plan comparison matrixEvery plan for Luxembourg — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Luxembourg.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.
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. Maps sip, streaming gulps: size the plan to your heaviest habit.
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.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.Keep your WhatsAppYour existing number keeps working on the data line.One-tap top-upMore data in seconds — no new QR code.24/7 supportReal humans plus the Tele Agent, around the clock.6 languagesThe app speaks your language, wherever you're from.Hotspot includedShare with your laptop or tablet at no extra cost.5G where availableFastest local partner network, selected automatically.
Included with every plan. 5G, hotspot, WhatsApp continuity, top-up, support, six languages — all tiers.
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. Four habits for smooth trips — pro tips for Developers · Luxembourg.
Who it's forFour travelers, one toolWho it's forBuilt for real trip shapes, not personas.1The planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data2The remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data3The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data4The family organizer
One tool, every traveler's needs covered.
esimgomobile network data
Use cases. Six traveler shapes, one tool — Developers · Luxembourg's use cases.
How esimgomobile Developers worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Open the toolNo account needed — it loads instantly in your browser.2Get the answerClear result with next steps — save it or act on it.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. Developers · Luxembourg, demystified: open, enter, answer, act.

Your Luxembourg plan is two minutes away

Pick a plan, check out securely, scan the QR code — you're online before you land.

See plans and pricing Talk to the Tele Agent