Jetzt verfügbar

API-first, bis hinunter zur 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.

Ab heute verfügbar

The developer platform is already open.

Kein Vertriebsanruf, kein menschlich freigeschaltetes Erstprojekt: Melden Sie sich an und erstellen Sie Ihre eigenen API-Schlüssel. Die Produkt-Endpunkte (Katalog, Checkout, Nummern, Tele Agent) sind live — alles unten funktioniert ab sofort.

Self-Service-API-Schlüssel

Melden Sie sich mit Firebase an und erstellen Sie sofort esk_live_…-Schlüssel — auf ein Projekt beschränkt (production, test, experiment), als Hash gespeichert, mit einem Call widerrufbar.

# 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"}'

OpenAPI 3.1, veröffentlicht

Jede Live-Route in einer maschinenlesbaren Datei dokumentiert — markiert, damit Generatoren niemals vortäuschen, eine Route funktioniere, bevor sie es tut.

api.esimgomobile.com/api/openapi.json →

Webhooks: com.esimgomobile.*

HTTPS-Endpunkte, HMAC-SHA256-Signaturen pro Endpunkt (Stripe-Stil t=…,v1=…), At-least-once-Zustellung mit Backoff, Dead-Lettering und Replay. Events für Abrechnung, Nummernprovisionierung, Portierung, Anrufe, SMS, Schlüssel und KYC.

API zur Rufnummernportierung

draft → information_required → pending → completed. Die API sagt Ihnen genau, welche Felder jedes Land vor der Einreichung braucht — die Einreichung bleibt fail-closed, bis das Carrier-Onboarding abgeschlossen ist.

KYC-Erfassung

Erfassen Sie die Identitätsdokumente, die Carrier je Land verlangen. Die Verifizierung bleibt ehrlich auf pending_verification, bis ein Verifizierungsanbieter konfiguriert ist — niemals ein gefälschtes „verifiziert“.

Ehrliche Statusseite

Komponentenstatus live aus der Service-Konfiguration abgeleitet — niemals erfundene Uptime-Prozente.

esimgomobile.com/status/ →

REST API

Der v1-API-Vertrag — jetzt live.

Der folgende Produktvertrag ist final für v1 und live auf der Plattform. Authentifizieren Sie sich mit einem Bearer-API-Schlüssel; jede Antwort ist 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

So funktioniert es

Das Produkt ganz nah.

Jeder Screen unten zeigt den echten Ablauf: Tarife, Abdeckung, Speed und Support — für diese Seite gerendert.

eSIM installedYour esimgomobile Developers plan is ready.
Push · just now
Push-Benachrichtigung auf Developers: eSIM installiert, Tarif bereit zur Aktivierung.
  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.
Support
How does Developers work?
Enter your trip details and get an instant answer — no account needed.
Support-Snippet — Developers: Was es tut, in einer ehrlichen Antwort.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
esimgomobile.com
Checkout
Atlas 50GB — esimgomobile Developerstotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Sicherer Checkout auf Developers: Atlas 50GB, voller Preis vorab, kein Kleingedrucktes.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
esimgomobile.com
man drawing a pie chart on paper
esimgomobile Developers
Travel guides · 8 min read
Aus dem Blog: „esimgomobile Developers“ — Reiseguides in etwa acht Minuten.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
view of airplane wing and clouds from cabin
Your travel number is waiting.
Get your eSIM
Live now · no waitlist
„Your travel number is waiting.“ — die CTA-Karte auf Developers: Tarife jetzt live, keine Warteliste.
  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
Die Developers-Installation: QR in drei Schritten — scannen, hinzufügen, los, etwa zwei Minuten.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
esimgomobile.com
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"ES"}'
200 OK · 169 ms
REST-API hinter Developers: eSIMs programmatisch ausstellen — 200 OK in Millisekunden.
  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
Dashboard
Active eSIMs3
Data left10 GB
Current cityesimgomobile Developers
Web-Dashboard auf Developers: jede eSIM, jede Reise, 10 GB übrig — ein Screen.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
esimgomobile Developers · coverage
5 carriers · automatic selection
Abdeckungskarte auf Developers: Partnernetze gepinnt, Auswahl automatisch.
  1. 1A real support transcript: the question, then the specific answer.
  2. 2This is what 'AI support' actually looks like in practice.
Network
5G
esimgomobile Developers connected
Netz-Widget für Developers: 5G, volle Balken — null Unklarheit über die Verbindung.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · esimgomobile Developers
Der ehrliche Vergleich auf Developers: ein Prepaid-eSIM-Preis gegen Carrier-Roaming.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
195
destinations live
launch fact
Start-Fakt zu Developers: 195 destinations live — eine feste Zahl, keine Live-Telemetrie.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Why travelers pick it
  • 5G where available
  • Hotspot included
  • Keep WhatsApp number
Warum Reisende Developers wählen: 5G where available, Hotspot included, Keep WhatsApp number.
  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
Start-Fakten zu Developers — 195 destinations live, 31 free tools, $8 entry monthly plan: Zahlen, die wir veröffentlichen und vertreten.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
wing of aircraft flying over clouds at sundown
Get connected
1 Pick a plan2 Scan QR3 Land online
Drei Schritte auf Developers: Tarif wählen, QR scannen, online landen.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Recent speeds
Barcelona514 Mbps
Seoul438 Mbps
Sydney124 Mbps
Aktuelle Speeds für Developers — Barcelona, Seoul, Sydney: illustrative 5G-Werte, keine Live-Messungen.
  1. 1Mockups illustrate the product flow — captions describe what's real.
  2. 2Figures labeled as examples show sample data, never live telemetry.
Tele Agent
“Setting up your esimgomobile Developers line…”
KI-Voice-Agent auf Developers — Antworten gesprochen, nie ein Support-Ticket.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
Atlas 20GB
20 GB · 30 days
esimgomobile Developers
Atlas 20GB — 20 GB · 30 days, prepaid und bereit auf Developers.
  1. 1The plan chip: name, allowance and destination in one line.
  2. 2Everything you need to confirm you're on the right plan.
47%
data left
Nutzungsring auf Developers — 47 % Daten übrig: Die Zahl, die Reisende am häufigsten checken.
  1. 1The plan chip: name, allowance and destination in one line.
  2. 2Everything you need to confirm you're on the right plan.
Virtual number
+1 205 351 6234
Routes toesimgomobile Developers
SMS + voiceEnabled
Ihre zweite Leitung auf Developers: +1 205 351 6234 — echte Nummer, SMS und Sprache aktiviert.
  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.
man waiting for flight in airport — Developers: Innenstadt, vernetzt: Die eSIM findet von allein das schnellste lokale Netz.
Developers: Innenstadt, vernetzt: Die eSIM findet von allein das schnellste lokale Netz.
Jess Loiterton — Developers: Die Museumsschlange überspringt sich selbst: Tickets online gekauft, direkt zur Tür.
Developers: Die Museumsschlange überspringt sich selbst: Tickets online gekauft, direkt zur Tür.
people walking on shore — Developers: Die Abflugtafel springt um: Gate gefunden, Lounge lokalisiert, alles auf der eSIM.
Developers: Die Abflugtafel springt um: Gate gefunden, Lounge lokalisiert, alles auf der eSIM.
close up of electronic circuit design on device — Developers: Die vernetzte Reise: Karten, Nachrichten und Übersetzung, alles auf einer eSIM.
Developers: Die vernetzte Reise: Karten, Nachrichten und Übersetzung, alles auf einer eSIM.
white airplane wing — Developers: Hafenblicke mit vollem Empfang: Abdeckung, wo Reisende wirklich hingehen.
Developers: Hafenblicke mit vollem Empfang: Abdeckung, wo Reisende wirklich hingehen.
eiffel tower against grey sky — Developers: Plätze und Promenaden: Videoanrufe nach Hause mit der Aussicht dahinter.
Developers: Plätze und Promenaden: Videoanrufe nach Hause mit der Aussicht dahinter.
the view from the top of a hill overlooking the ocean — Developers: Jeder Endpoint liefert dieselbe Form — einen lernen, alle kennen.
Developers: Jeder Endpoint liefert dieselbe Form — einen lernen, alle kennen.
Senior tourists photographing scenic landscape in Cappadocia, Türkiye under a sun umbrella on a sunny day. — Developers: Museumsnachmittage mit streamenden Audioguides, nicht puffernd.
Developers: Museumsnachmittage mit streamenden Audioguides, nicht puffernd.
cute little girl with suitcase and passport — Developers: Altstadt, neue Tricks: Übersetzungs-Apps arbeiten in Echtzeit.
Developers: Altstadt, neue Tricks: Übersetzungs-Apps arbeiten in Echtzeit.
women sitting on the shore — Developers: Das Fensterplatz-Büro: Mails irgendwo über dem Ozean gesendet.
Developers: Das Fensterplatz-Büro: Mails irgendwo über dem Ozean gesendet.
Robert Pügner — Developers: Die Foodtour: jede Empfehlung vor Ort nachgeschlagen.
Developers: Die Foodtour: jede Empfehlung vor Ort nachgeschlagen.
Emiliano Rodríguez — Developers: Check-in-Schlangen laufen schneller, wenn Ihre Dokumente auf dem Handy sind.
Developers: Check-in-Schlangen laufen schneller, wenn Ihre Dokumente auf dem Handy sind.
positive mother and daughter with suitcase in airport corridor — Developers: Wandern auf dem Grat: Trailkarte offline, Notfallnummern gespeichert.
Developers: Wandern auf dem Grat: Trailkarte offline, Notfallnummern gespeichert.
Cuneyt Palta — Developers: Die Red-Eye-Erholung: Hotel-Early-Check-in mitten im Flug arrangiert.
Developers: Die Red-Eye-Erholung: Hotel-Early-Check-in mitten im Flug arrangiert.
silver iphone on black surface — Developers: Stadtlichter nach Einbruch der Dunkelheit — der eSIM ist die Uhrzeit egal.
Developers: Stadtlichter nach Einbruch der Dunkelheit — der eSIM ist die Uhrzeit egal.
men with backpacks walking on the beach — Developers: Nachtmärkte und späte Züge — durchgehend verbunden.
Developers: Nachtmärkte und späte Züge — durchgehend verbunden.
Roderick Salatan — Developers: Bei Regen oder Sonne, die Verbindung hält — Wetter drosselt keine Daten.
Developers: Bei Regen oder Sonne, die Verbindung hält — Wetter drosselt keine Daten.
Pok Rie — Developers: Duty-free-Stöbern: Preise gegen zuhause gecheckt, bevor gekauft wird.
Developers: Duty-free-Stöbern: Preise gegen zuhause gecheckt, bevor gekauft wird.
cityscape with multistory house exteriors under cloudy sky — Developers: Auf Straßenebene: Navigation, Fahrdienste und Bewertungen, alles sofort.
Developers: Auf Straßenebene: Navigation, Fahrdienste und Bewertungen, alles sofort.
airplane wing above the clouds on a clear day — Developers: Inselzeit, Onlinezeit: Fähren, Strände und voller Empfang.
Developers: Inselzeit, Onlinezeit: Fähren, Strände und voller Empfang.

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. Choose data that fits the trip
    • Short city break? 5 GB. Two weeks with maps and video calls? 20 GB. Working remotely or hotspotting? 50 GB or Unlimited.
    • Every plan shows exactly what you get — no asterisks.
  2. Install in two minutes
    • Buy, scan the QR code, done. The whole thing happens on your phone, wherever you are.
    • Install days before you fly or minutes before boarding — your call.
  3. Switch on and go
    • Enable the eSIM line in settings when you arrive. It connects to the fastest local partner network on its own.
    • Your home number keeps working for calls and texts on your physical SIM if you keep it active.

Explainer

Good to know

  • Charge your phone before long travel days; weak signal areas drain batteries faster.
  • Buy and install your eSIM before departure — airport Wi-Fi is the worst place to set up connectivity.
  • Set a data alert at 80% so a top-up never surprises you mid-trip.
  • Hotspot sparingly: one laptop tethered all day can burn through a week of phone data.
  • 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.

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.

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

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

Charts & explainers

Every chart that matters for esimgomobile Developers.

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. Tarifvolumen, Gültigkeitsfenster und eine typische Nutzungskurve für esimgomobile Developers — hovern für exakte Werte.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.Does hotspot work?
Yes — share your connection with laptop or tablet.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
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. Noch neugierig? Der Tele Agent beantwortet alles andere sofort.
esimgomobile Developers: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Instant resultsno waiting, no signupAlways currentreflects live plans and coverageShares wellsend the answer to travel companionsPrivate by designyour inputs stay in your browserMobile friendlyworks on the phone in your handIllustrative profile based on tool design — not measured telemetry.
Capability profile. Was Developers am besten kann — das Capability-Profil, ehrlich gerankt.
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. Vier Schritte von der Landung auf Developers bis zu Ihrer Antwort.
Who it's forFour travelers, one toolWho it's forBuilt for real trip shapes, not personas.1The remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data2The family organizer
One tool, every traveler's needs covered.
esimgomobile network data3The planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data4The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data
Use cases. Sechs Reiseformen, ein Tool — Developerss Use Cases.
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.2Screenshot bookingsHotel address & confirmations, available with no signal.3Set an 80% alertA top-up should never surprise you mid-trip.4Check unlock statusCarrier-locked phones can't add an eSIM — verify first.
Pro tips. Vier Gewohnheiten für ruhige Reisen — Pro-Tipps für Developers.
Plan comparison matrixEvery plan for every destination we cover — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to every destination we cover.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. Wochenend-Schlücke, Zwei-Wochen-Daten, Arbeitsmonat-Schlücke oder Unlimited — nach Reiseform wählen.
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.6 languagesThe app speaks your language, wherever you're from.24/7 supportReal humans plus the Tele Agent, around the clock.Hotspot includedShare with your laptop or tablet at no extra cost.5G where availableFastest local partner network, selected automatically.Keep your WhatsAppYour existing number keeps working on the data line.
Included with every plan. Sechs Dinge shippen mit jedem Tarif — die Developers-Basis, absichtlich großzügig.
Network at a glanceCoverage facts, network-wideNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available, auto-selectedesimgomobile 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. Ziele, 5G, Sprachen, Installationsspeed — die Zahlen, die vor dem Kauf zählen.
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. Drei Schritte, etwa zwei Minuten — das Developers-Ritual, kein Ladenbesuch.
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. Karten nippen, Streaming schlingt: Tarif nach Ihrem schwersten Habit bemessen.

Bereit, wenn du es bist

Wähle einen Tarif, zahle sicher, scanne den QR-Code — du bist online, bevor du landest.

Tarife ansehen Mit dem Tele Agent sprechen