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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 Denmark

Using developers in Denmark? You are on the local edition — key facts for Denmark (capital Copenhagen, dial code +45) are below. esimgomobile plans for Denmark are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalCopenhagen
Dial code+45
CurrencyDanish krone (DKK)
Time zoneUTC+1
Main languagesDanish

Plans are live — see plans and pricing.

Inside the app

Take the tour.

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

a view of the city skyline with a blue sky
“Customs line in Denmark was the perfect time to install — done by baggage claim.”
Aiko T.Verified traveler · Denmark
Traveler review for Developers · Denmark: “Customs line in Denmark was the perfect time to install — done by baggage claim.” — Aiko T..
  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
“Setting up your Denmark line…”
AI voice agent on Developers · Denmark — answers spoken aloud, never a support ticket.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Denmark
The honest comparison on Developers · Denmark: one prepaid eSIM price versus carrier roaming.
  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.
Denmark · 5G
Signal widget on Developers · Denmark: network generation and place, always visible.
  1. 1Signal widget: network generation and destination, always visible.
  2. 2Five bars, zero ambiguity about what you're connected to.
Virtual number
+1 205 057 9591
Routes toDenmark
SMS + voiceEnabled
Your second line on Developers · Denmark: +1 205 057 9591 — real number, SMS and voice enabled.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
woman using a laptop in a restaurant
Denmark is calling.
Get your eSIM
Live now · no waitlist
“Denmark is calling.” — the CTA card on Developers · Denmark: plans live now, no waitlist.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
86%
data left
Usage ring on Developers · Denmark — 86% 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.
Language
DeutschFrançaisPortuguês
Language picker on Developers · Denmark — Deutsch, Français, Português: the app speaks six languages.
  1. 1Signal widget: network generation and destination, always visible.
  2. 2Five bars, zero ambiguity about what you're connected to.
eSIM installedYour Denmark plan is ready.
Push · just now
Push notification on Developers · Denmark: 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.
Tele Agent
Will my phone work in Denmark?
If it's carrier-unlocked and eSIM-capable, yes. I checked Denmark bands — you're covered.
Tele Agent chat on Developers · Denmark — real questions, specific answers, zero telecom jargon.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
man walking at a river in mountains
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · Denmark: 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.
Coverage
195
destinations live
Denmark5G ready
Check coverage
Coverage at a glance for Developers · Denmark: 195 destinations live, fastest local partner selected on its own.
  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.
Denmark · coverage
5 carriers · automatic selection
Coverage map on Developers · Denmark: 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?
Support
How does Developers · Denmark work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · Denmark: what it does, in one honest answer.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
$8
entry monthly plan
launch fact
Launch fact behind Developers · Denmark: $8 entry monthly plan — a fixed figure, not live telemetry.
  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
Denmark
Atlas 50GB — 50 GB · 60 days, prepaid and ready on Developers · Denmark.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
Why travelers pick it
  • 5G where available
  • Hotspot included
  • Instant QR install
Why travelers pick Developers · Denmark: 5G where available, Hotspot included, Instant QR install.
  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.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · Denmark — 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?
eSIM plan
Atlas 50GB50 GB · 60 days
Denmark
Install eSIM
Atlas 50GB on Developers · Denmark — 50 GB · 60 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.
Speed test
331Mbps
5G · Denmark · 18 ms
Illustrative speed readout on Developers · Denmark: 331 Mbps, 18 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.
man and woman video call on laptop — Developers · Denmark: Souvenir hunting with live currency conversion in your pocket.
Developers · Denmark: Souvenir hunting with live currency conversion in your pocket.
Josh Sorenson — Developers · Denmark: The sunrise ferry: tickets in the wallet app, timetable cached offline.
Developers · Denmark: The sunrise ferry: tickets in the wallet app, timetable cached offline.
man in striped long sleeve and kufi video calling using a laptop — Developers · Denmark: The long layover: streaming, working and messaging, all covered.
Developers · Denmark: The long layover: streaming, working and messaging, all covered.
white and gray high rise buildings near body of water — Developers · Denmark: Rain or shine, the connection holds — weather doesn't throttle data.
Developers · Denmark: Rain or shine, the connection holds — weather doesn't throttle data.
moody eiffel tower view on a rainy day — Developers · Denmark: Hiking the ridge: trail map offline, emergency numbers saved.
Developers · Denmark: Hiking the ridge: trail map offline, emergency numbers saved.
天玑 不器 — Developers · Denmark: Plazas and promenades: video calls home with the view behind you.
Developers · Denmark: Plazas and promenades: video calls home with the view behind you.
friends jumping at pangandaran beach — Developers · Denmark: The conference badge: QR ticket scanned, session schedule synced.
Developers · Denmark: The conference badge: QR ticket scanned, session schedule synced.
Valeria Drozdova — Developers · Denmark: Sunrise hikes start with a weather check — data on, boots on.
Developers · Denmark: Sunrise hikes start with a weather check — data on, boots on.
close up shot of a person in blue sweater holding a black headset — Developers · Denmark: The last night: photo album backed up, memories safe before wheels-up.
Developers · Denmark: The last night: photo album backed up, memories safe before wheels-up.
grayscale photo of people hiking on the mountain — Developers · Denmark: Harbor views with full bars: coverage where travelers actually go.
Developers · Denmark: Harbor views with full bars: coverage where travelers actually go.
bustling night market street in tokyo — Developers · Denmark: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Developers · Denmark: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
quiet night street scene in tokyo japan — Developers · Denmark: Museum afternoons with audio guides streaming, not buffering.
Developers · Denmark: Museum afternoons with audio guides streaming, not buffering.
black headset on yellow file — Developers · Denmark: Island time, online time: ferries, beaches and full signal.
Developers · Denmark: Island time, online time: ferries, beaches and full signal.
black and white new york city skyline — Developers · Denmark: The food tour: every recommendation looked up on the spot.
Developers · Denmark: The food tour: every recommendation looked up on the spot.
captivating view from airplane window at sunset — Developers · Denmark: Lost in the medina, found by GPS: the blue dot never lies.
Developers · Denmark: Lost in the medina, found by GPS: the blue dot never lies.
a man standing on a mountain — Developers · Denmark: Night markets and late trains — connected the whole way through.
Developers · Denmark: Night markets and late trains — connected the whole way through.
Marina Grechko — Developers · Denmark: Migrate from Twilio in three steps — the toolkit does the heavy lifting.
Developers · Denmark: Migrate from Twilio in three steps — the toolkit does the heavy lifting.
eiffel tower in paris — Developers · Denmark: Border crossings without the paperwork shuffle: ID photos stored on the phone.
Developers · Denmark: Border crossings without the paperwork shuffle: ID photos stored on the phone.
Tiana — Developers · Denmark: The viewpoint at golden hour: livestream the sunset to everyone back home.
Developers · Denmark: The viewpoint at golden hour: livestream the sunset to everyone back home.
tourists at the eiffel tower in paris daytime view — Developers · Denmark: The modern arrival: online before the seatbelt sign goes off.
Developers · Denmark: The modern arrival: online before the seatbelt sign goes off.

Explainer

esimgomobile Developers: 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

  • Save your eSIM QR code somewhere safe (email it to yourself) in case you switch phones mid-trip.
  • Check that your phone is carrier-unlocked before you buy any eSIM — locked phones can't add one.
  • Download offline maps for your destination — they save data and work in dead zones.
  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.
  • Turn off auto-play on social apps before you fly; it quietly eats roaming data.
  • 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.

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

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.

See the math

Every chart that matters for Denmark.

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.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.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.
Does hotspot work?
Yes — share your connection with laptop or tablet.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
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 · Denmark answers, one screen.
How esimgomobile Developers 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.2Open the toolNo account needed — it loads instantly in your browser.3Get the answerClear result with next steps — save it or act on it.4Enter your detailsTrip, data needs, destination. The tool does the math.
Tool walkthrough. Every tool on esimgomobile follows the same honest pattern: input, math, answer.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.One-tap top-upMore data in seconds — no new QR code.5G where availableFastest local partner network, selected automatically.6 languagesThe app speaks your language, wherever you're from.Hotspot includedShare with your laptop or tablet at no extra cost.24/7 supportReal humans plus the Tele Agent, around the clock.Keep your WhatsAppYour existing number keeps working on the data line.
Included with every plan. Six things ship with every plan — the Developers · Denmark baseline, generous on purpose.
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 · Denmark usage guide.
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.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Screenshot bookingsHotel address & confirmations, available with no signal.2Download offline mapsThey save data and work in dead zones.3Install before you flyAirport Wi-Fi is the worst place to set up connectivity.4Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.
Pro tips. Four habits for smooth trips — pro tips for Developers · Denmark.
esimgomobile Developers: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Instant resultsno waiting, no signupPrivate by designyour inputs stay in your browserAlways currentreflects live plans and coverageShares wellsend the answer to travel companionsMobile friendlyworks on the phone in your handIllustrative profile based on tool design — not measured telemetry.
Capability profile. Capabilities measured by traveler value, not feature count.
Network at a glanceCoverage facts for DenmarkNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Denmarkesimgomobile 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. Denmark connects to the fastest available local partner network automatically.
Plan comparison matrixEvery plan for Denmark — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Denmark.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. Developers · Denmark: four plans, four trip shapes — the matrix carries no fine print.
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 last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data3The family organizer
One tool, every traveler's needs covered.
esimgomobile network data4The remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data
Use cases. Six traveler shapes, one tool — Developers · Denmark's use cases.

Ready when Denmark is

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

See plans and pricing Talk to the Tele Agent