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

See it live

esimgomobile in action.

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

esimgomobile Developers · 5G
Signal widget on Developers: 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.
Recent speeds
Cairo929 Mbps
Singapore144 Mbps
Barcelona516 Mbps
Recent speeds for Developers — Cairo, Singapore, Barcelona: 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 Developers · coverage
5 carriers · automatic selection
Coverage map on Developers: 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?
Atlas 50GB
50 GB · 60 days
esimgomobile Developers
Atlas 50GB — 50 GB · 60 days, prepaid and ready on Developers.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
Install
1 Scan2 Add3 Go
The Developers install: QR in three steps — scan, add, go, about two minutes.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
28%
data left
Usage ring on Developers — 28% of data left: the number travelers check most.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
esimgomobile.com
Checkout
Atlas 50GB — esimgomobile Developerstotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers: Atlas 50GB, full price up front, no fine print.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
Why travelers pick it
  • 5G where available
  • One-tap top-up
  • 24/7 support
Why travelers pick Developers: 5G where available, One-tap top-up, 24/7 support.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
man working on computer at outdoor cafe
Ready for your trip?
Get your eSIM
“Ready for your trip?” — the banner on Developers: two minutes from curious to connected.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
31
free tools
launch fact
Launch fact behind Developers: 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.
Speed test
343Mbps
5G · esimgomobile Developers · 64 ms
Illustrative speed readout on Developers: 343 Mbps, 64 ms — example figures, not live measurements.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers — 195 destinations live, 31 free tools, $8 entry monthly plan: numbers we publish and stand behind.
  1. 1Mockups illustrate the product flow — captions describe what's real.
  2. 2Figures labeled as examples show sample data, never live telemetry.
Network
5G
esimgomobile Developers connected
Network widget for Developers: 5G, full bars — zero ambiguity about the connection.
  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.
eSIM plan
Atlas 5GB5 GB · 30 days
esimgomobile Developers
Install eSIM
Atlas 5GB on Developers — 5 GB · 30 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.
esimgomobile.com
Plans for esimgomobile Developers
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers: 5GB, 20GB, 50GB and Unlimited — pick by trip, not fine print.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
eSIM installedYour esimgomobile Developers plan is ready.
Push · just now
Push notification on Developers: 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.
Language
日本語EnglishDeutsch
Language picker on Developers — 日本語, English, Deutsch: the app speaks six languages.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
esimgomobile.com
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"ES"}'
200 OK · 90 ms
REST API behind Developers: issue eSIMs programmatically — 200 OK in milliseconds.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
Support
How does Developers work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers: 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.
Tele Agent
“Setting up your esimgomobile Developers line…”
AI voice agent on Developers — 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.
Kristian Bechthold — Developers: The night bus: entertainment downloaded, messages queued, rest easy.
Developers: The night bus: entertainment downloaded, messages queued, rest easy.
traditional blue dome church in santorini — Developers: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Developers: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Chanita Sykes — Developers: Real journeys, real connectivity — this is what the product is for.
Developers: Real journeys, real connectivity — this is what the product is for.
Altaf Shah — Developers: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Developers: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Jess Loiterton — Developers: The modern arrival: online before the seatbelt sign goes off.
Developers: The modern arrival: online before the seatbelt sign goes off.
A woman sitting comfortably on a ferry, enjoying a peaceful journey. — Developers: Border crossings without the paperwork shuffle: ID photos stored on the phone.
Developers: Border crossings without the paperwork shuffle: ID photos stored on the phone.
a family is silhouetted against an airport window — Developers: SDKs, a CLI, and an MCP server — the developer surface, complete.
Developers: SDKs, a CLI, and an MCP server — the developer surface, complete.
close up photo of a smiling woman holding microphone — Developers: Family group chat: location shared, dinner plans settled in minutes.
Developers: Family group chat: location shared, dinner plans settled in minutes.
Silhouette of a man using a smartphone in an airport terminal in Surabaya, Indonesia. — Developers: The rental desk handshake: confirmation email open, license photo ready.
Developers: The rental desk handshake: confirmation email open, license photo ready.
people walking on the sand — Developers: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
Developers: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
blank smartphone screen held in hand indoors — Developers: The sunrise ferry: tickets in the wallet app, timetable cached offline.
Developers: The sunrise ferry: tickets in the wallet app, timetable cached offline.
people in airport terminal — Developers: Coast roads and country lanes — the map keeps up wherever you roam.
Developers: Coast roads and country lanes — the map keeps up wherever you roam.
Dr.Ramsinh Jadav — Developers: The last night: photo album backed up, memories safe before wheels-up.
Developers: The last night: photo album backed up, memories safe before wheels-up.
Hb zee — Developers: API keys rotate in one click — the dashboard makes it boring.
Developers: API keys rotate in one click — the dashboard makes it boring.
Mikhail Nilov — Developers: Rate limits are generous and documented — no surprise 429s.
Developers: Rate limits are generous and documented — no surprise 429s.
view of seashore from santorini in greece — Developers: The status page is public — uptime you can verify, not claim.
Developers: The status page is public — uptime you can verify, not claim.
three women wearing formal clothes sitting in front of conference table — Developers: Lost in the medina, found by GPS: the blue dot never lies.
Developers: Lost in the medina, found by GPS: the blue dot never lies.
Ricky Esquivel — Developers: Street-food stalls and mobile pay: dinner ordered without a word of the language.
Developers: Street-food stalls and mobile pay: dinner ordered without a word of the language.
Pok Rie — Developers: The docs ship with runnable examples, not pseudocode.
Developers: The docs ship with runnable examples, not pseudocode.
group of friends enjoying a beach day — Developers: The API issues eSIMs the way your app issues everything else — over HTTPS.
Developers: The API issues eSIMs the way your app issues everything else — over HTTPS.

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.

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.

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

  • Keep your home SIM active for two-factor codes from your bank; run data on the eSIM line.
  • 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.
  • Check that your phone is carrier-unlocked before you buy any eSIM — locked phones can't add one.
  • 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.

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

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.

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

The data room

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. Plan allowances, validity windows and a typical usage curve for esimgomobile Developers — hover for exact values.
What your gigabytes meanTypical hourly usage per activityWhat your gigabytes meanTranslate plan sizes into real travel behavior.Maps & navigation≈ 5 MB / hourMessaging & email≈ 20 MB / hourSocial browsing≈ 150 MB / hourVideo calls≈ 600 MB / hourHD streaming≈ 1.5 GB / hourTypical usage rates — actual consumption varies by app and quality settings.
Data usage guide. A 20 GB plan covers roughly two weeks of normal travel use.
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. Developers: four plans, four trip shapes — the matrix carries no fine print.
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 handInstant resultsno waiting, no signupPrivate by designyour inputs stay in your browserAlways currentreflects live plans and coverageShares wellsend the answer to travel companionsIllustrative profile based on tool design — not measured telemetry.
Capability profile. Capabilities measured by traveler value, not feature count.
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.
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.
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.
Get connected in three stepsFrom purchase to online in about two minutesGet connected in three stepsNo store visit, no plastic SIM, no waiting for the post.1Scan the QR codeThe eSIM installs straight onto your phone. No store, no plastic SIM.2Land connectedSwitch the line on when you arrive — online before baggage claim.3Pick your planChoose data for your trip — checkout takes about two minutes.
Three-step setup. Install days before departure or minutes before boarding — your call.
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 remote worker
Size data for video calls and hotspotting with confidence.
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. If you recognize yourself here, the tool will pay for its click.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Set an 80% alertA top-up should never surprise you mid-trip.2Download offline mapsThey save data and work in dead zones.3Check unlock statusCarrier-locked phones can't add an eSIM — verify first.4Screenshot bookingsHotel address & confirmations, available with no signal.
Pro tips. The small things that separate smooth trips from stressful ones.
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.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.6 languagesThe app speaks your language, wherever you're from.
Included with every plan. From 5 GB to Unlimited, the inclusions don't shrink.
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. Destinations, 5G, languages, install speed — the numbers that matter before you buy.
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.2Enter your detailsTrip, data needs, destination. The tool does the math.3Apply itJump straight to the plan, setting or page it points to.4Get the answerClear result with next steps — save it or act on it.
Tool walkthrough. Four steps from landing on Developers to having your answer.

Your plan is two minutes away

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

See plans and pricing Talk to the Tele Agent