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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 Marshall Islands

Using developers in the Marshall Islands? You are on the local edition — key facts for Marshall Islands (capital Majuro, dial code +692) are below. esimgomobile plans for Marshall Islands are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalMajuro
Dial code+692
CurrencyUS dollar (USD)
Time zoneUTC+12
Main languagesEnglish, Marshallese

Plans are live — see plans and pricing.

Up close

esimgomobile in action.

Twenty product screens and twenty field photos — this is what traveling connected looks like.

Install
1 Scan2 Add3 Go
The Developers · the Marshall Islands 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.
Speed test
927Mbps
5G · the Marshall Islands · 77 ms
Illustrative speed readout on Developers · the Marshall Islands: 927 Mbps, 77 ms — example figures, not live measurements.
  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.
esimgomobile.com
business partners having a meeting at the office
esimgomobile Develo…rst, down to the SIM
Travel guides · 8 min read
From the blog: “esimgomobile Develo…rst, down to the SIM” — travel guides in about eight minutes.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
a man standing on top of the mountain
the Marshall Islands
eSIM dataLive
Local numberAvailable
5GYes
Coverage card on Developers · the Marshall Islands: data live, local number available, 5G where it exists.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Why travelers pick it
  • One-tap top-up
  • 5G where available
  • 24/7 support
Why travelers pick Developers · the Marshall Islands: One-tap top-up, 5G where available, 24/7 support.
  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.
Recent speeds
Lisbon742 Mbps
Seoul538 Mbps
New York653 Mbps
Recent speeds for Developers · the Marshall Islands — Lisbon, Seoul, New York: 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.
esimgomobile.com
Plans for the Marshall Islands
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · the Marshall Islands: 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.
mother and daughter watching planes at an airport
Pack light. Stay connected in the Marshall Islands.
Get your eSIM
Live now · no waitlist
“Pack light. Stay connected in the Marshall Islands.” — the CTA card on Developers · the Marshall Islands: plans live now, no waitlist.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
woman and man standing near windows on airport
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · the Marshall Islands: pick a plan, scan the QR, land online.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
eSIM installedYour the Marshall Islands plan is ready.
Push · just now
Push notification on Developers · the Marshall Islands: eSIM installed, plan ready to activate.
  1. 1The roaming math, made visible: one price versus per-day carrier fees.
  2. 2This is the comparison most travelers never see until the bill.
Coverage
195
destinations live
the Marshall Islands5G ready
Check coverage
Coverage at a glance for Developers · the Marshall Islands: 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.
eSIM plan
Atlas UnlimitedUnlimited · 30 days
the Marshall Islands
Install eSIM
Atlas Unlimited on Developers · the Marshall Islands — Unlimited · 30 days, prepaid with the full price shown before you pay.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
esimgomobile.com
Checkout
Atlas 5GB — the Marshall Islandstotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · the Marshall Islands: Atlas 5GB, full price up front, no fine print.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
Tele Agent
Will my phone work in the Marshall Islands?
If it's carrier-unlocked and eSIM-capable, yes. I checked the Marshall Islands bands — you're covered.
Tele Agent chat on Developers · the Marshall Islands — real questions, specific answers, zero telecom jargon.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
My eSIM
67%5 GB left
Days left20
Top up+10 GB
Data dashboard on Developers · the Marshall Islands: 67% remaining, days left, top-up one tap away.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · the Marshall Islands — 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.
Virtual number
+1 205 390 1626
Routes tothe Marshall Islands
SMS + voiceEnabled
Your second line on Developers · the Marshall Islands: +1 205 390 1626 — 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.
the Marshall Islands · coverage
5 carriers · automatic selection
Coverage map on Developers · the Marshall Islands: 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 · the Marshall Islands work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · the Marshall Islands: 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.
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · the Marshall Islands
The honest comparison on Developers · the Marshall Islands: 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.
Anton Massalov — Developers · the Marshall Islands: Real journeys, real connectivity — this is what the product is for.
Developers · the Marshall Islands: Real journeys, real connectivity — this is what the product is for.
a view of a beach with a greek flag flying — Developers · the Marshall Islands: Hiking the ridge: trail map offline, emergency numbers saved.
Developers · the Marshall Islands: Hiking the ridge: trail map offline, emergency numbers saved.
Vjanodic WERSOV — Developers · the Marshall Islands: Every endpoint returns the same shape — learn one, know them all.
Developers · the Marshall Islands: Every endpoint returns the same shape — learn one, know them all.
AMITR MEENA (AMMY) — Developers · the Marshall Islands: Platform to platform: tickets, timetables and taxis in one hand.
Developers · the Marshall Islands: Platform to platform: tickets, timetables and taxis in one hand.
person using smartphone with green screen at desk — Developers · the Marshall Islands: Street level: navigation, rideshares and reviews, all instant.
Developers · the Marshall Islands: Street level: navigation, rideshares and reviews, all instant.
person video calling using a laptop — Developers · the Marshall Islands: Harbor views with full bars: coverage where travelers actually go.
Developers · the Marshall Islands: Harbor views with full bars: coverage where travelers actually go.
Valeria Drozdova — Developers · the Marshall Islands: Street-food stalls and mobile pay: dinner ordered without a word of the language.
Developers · the Marshall Islands: Street-food stalls and mobile pay: dinner ordered without a word of the language.
teddy bear sitting atop luggage left in airport — Developers · the Marshall Islands: Golden hour, fully online — photo backups upload before dinner.
Developers · the Marshall Islands: Golden hour, fully online — photo backups upload before dinner.
Man taking photo out of airplane window, capturing wing view with smartphone. — Developers · the Marshall Islands: The business trip: client deck synced, video call joined from the taxi.
Developers · the Marshall Islands: The business trip: client deck synced, video call joined from the taxi.
lively nightlife in shibuya tokyo street — Developers · the Marshall Islands: Market mornings: look up the dish, translate the menu, pay by phone.
Developers · the Marshall Islands: Market mornings: look up the dish, translate the menu, pay by phone.
creative professional on video call — Developers · the Marshall Islands: Migrate from Twilio in three steps — the toolkit does the heavy lifting.
Developers · the Marshall Islands: Migrate from Twilio in three steps — the toolkit does the heavy lifting.
a person holding black smartphone — Developers · the Marshall Islands: The red-eye recovery: hotel early-check-in arranged mid-flight.
Developers · the Marshall Islands: The red-eye recovery: hotel early-check-in arranged mid-flight.
An adult male photographs a mosque using a smartphone outdoors with a focus on capturing architecture. — Developers · the Marshall Islands: From departure lounge to arrival hall, the data never drops.
Developers · the Marshall Islands: From departure lounge to arrival hall, the data never drops.
landscape view of greece during day time — Developers · the Marshall Islands: The viewpoint at golden hour: livestream the sunset to everyone back home.
Developers · the Marshall Islands: The viewpoint at golden hour: livestream the sunset to everyone back home.
rising sun behind nyc downtown — Developers · the Marshall Islands: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Developers · the Marshall Islands: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Maarten van den Heuvel — Developers · the Marshall Islands: Souvenir hunting with live currency conversion in your pocket.
Developers · the Marshall Islands: Souvenir hunting with live currency conversion in your pocket.
man in black suit pointing a pen — Developers · the Marshall Islands: API keys rotate in one click — the dashboard makes it boring.
Developers · the Marshall Islands: API keys rotate in one click — the dashboard makes it boring.
unrecognizable ethnic man having video conference with upset girlfriend — Developers · the Marshall Islands: Rate limits are generous and documented — no surprise 429s.
Developers · the Marshall Islands: Rate limits are generous and documented — no surprise 429s.
man holding smartphone with app icons displayed — Developers · the Marshall Islands: The long layover: streaming, working and messaging, all covered.
Developers · the Marshall Islands: The long layover: streaming, working and messaging, all covered.
woman hiking on hill — Developers · the Marshall Islands: The status page is public — uptime you can verify, not claim.
Developers · the Marshall Islands: The status page is public — uptime you can verify, not claim.

Explainer

esimgomobile Develo…rst, down to the SIM: 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

  • Hotspot sparingly: one laptop tethered all day can burn through a week of phone data.
  • Set a data alert at 80% so a top-up never surprises you mid-trip.
  • Turn off auto-play on social apps before you fly; it quietly eats roaming 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.
  • Keep your home SIM active for two-factor codes from your bank; run data on the eSIM line.

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.

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

Visual guides

the Marshall Islands, visualized.

esimgomobile Develo…rst, down to the SIM — 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 Develo…rst, down to the SIM — data dashboard. Plan allowances, validity windows and a typical usage curve for esimgomobile Develo…rst, down to the SIM — hover for exact values.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.24/7 supportReal humans plus the Tele Agent, around the clock.Keep your WhatsAppYour existing number keeps working on the data line.6 languagesThe app speaks your language, wherever you're from.One-tap top-upMore data in seconds — no new QR code.Hotspot includedShare with your laptop or tablet at no extra cost.5G where availableFastest local partner network, selected automatically.
Included with every plan. Six things ship with every plan — the Developers · the Marshall Islands baseline, generous on purpose.
esimgomobile Develo…rst, down to the SIM: 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 coverageMobile friendlyworks on the phone in your handPrivate by designyour inputs stay in your browserShares 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.Does hotspot work?
Yes — share your connection with laptop or tablet.
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.
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.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
FAQ at a glance. Six questions every traveler asks — the Developers · the Marshall Islands answers, one screen.
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 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 planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data
Use cases. Planners, sprinters, remote workers, families — who's it for.
Network at a glanceCoverage facts for the Marshall IslandsNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in the Marshall Islandsesimgomobile 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.
Plan comparison matrixEvery plan for the Marshall Islands — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to the Marshall Islands.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 · the Marshall Islands: four plans, four trip shapes — the matrix carries no fine print.
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. Buy, scan, land: the whole sequence fits in a coffee queue.
How esimgomobile Develo…rst, down to the SIM 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. Developers · the Marshall Islands, demystified: open, enter, answer, act.
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.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Check unlock statusCarrier-locked phones can't add an eSIM — verify first.2Download offline mapsThey save data and work in dead zones.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. The small things that separate smooth trips from stressful ones.

Start your the Marshall Islands trip online

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