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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 Cambodia

Using developers in Cambodia? You are on the local edition — key facts for Cambodia (capital Phnom Penh, dial code +855) are below. esimgomobile plans for Cambodia are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalPhnom Penh
Dial code+855
CurrencyCambodian riel (KHR)
Time zoneUTC+7
Main languagesKhmer

Plans are live — see plans and pricing.

Inside the app

Twenty screens, twenty photos.

A visual walkthrough built for this page — mockups of the exact experience plus photography from the field.

Cambodia · coverage
5 carriers · automatic selection
Coverage map on Developers · Cambodia: partner networks pinned, selection automatic.
  1. 1A real support transcript: the question, then the specific answer.
  2. 2This is what 'AI support' actually looks like in practice.
195
destinations live
launch fact
Launch fact behind Developers · Cambodia: 195 destinations live — 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.
Install
1 Scan2 Add3 Go
The Developers · Cambodia install: QR in three steps — scan, add, go, about two minutes.
  1. 1Live usage ring: see remaining data at a glance, no mental math.
  2. 2Top-up button sits right where you need it when data runs low.
esimgomobile.com
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"CA"}'
200 OK · 54 ms
REST API behind Developers · Cambodia: 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.
Virtual number
+1 205 601 3116
Routes toCambodia
SMS + voiceEnabled
Your second line on Developers · Cambodia: +1 205 601 3116 — real number, SMS and voice enabled.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
eSIM plan
Atlas 5GB5 GB · 30 days
Cambodia
Install eSIM
Atlas 5GB on Developers · Cambodia — 5 GB · 30 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.
My eSIM
51%5 GB left
Days left9
Top up+10 GB
Data dashboard on Developers · Cambodia: 51% remaining, days left, top-up one tap away.
  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.
Tele Agent transcript
Do I need a local number in Cambodia?
A local Cambodia number is available on this plan — I can attach it before you land.
Tele Agent transcript on Developers · Cambodia: real question, specific answer.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
eSIM installedYour Cambodia plan is ready.
Push · just now
Push notification on Developers · Cambodia: 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.
man drinking coffee while working on his laptop
Pack light. Stay connected in Cambodia.
Get your eSIM
Live now · no waitlist
“Pack light. Stay connected in Cambodia.” — the CTA card on Developers · Cambodia: 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.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · Cambodia — 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.
Coverage
195
destinations live
Cambodia5G ready
Check coverage
Coverage at a glance for Developers · Cambodia: 195 destinations live, fastest local partner selected on its own.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Cambodia
The honest comparison on Developers · Cambodia: 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.
esimgomobile.com
A hand holding a smartphone capturing a bustling train station with blurred travelers in the background.
esimgomobile Developers
Travel guides · 8 min read
From the blog: “esimgomobile Developers” — travel guides in about eight minutes.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
eiffel tower architectural marvel in paris
Cambodia
eSIM dataLive
Local numberAvailable
5GYes
Coverage card on Developers · Cambodia: 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.
esimgomobile.com
Plans for Cambodia
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · Cambodia: 5GB, 20GB, 50GB and Unlimited — pick by trip, not 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
“Setting up your Cambodia line…”
AI voice agent on Developers · Cambodia — answers spoken aloud, never a 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 50GB
50 GB · 60 days
Cambodia
Atlas 50GB — 50 GB · 60 days, prepaid and ready on Developers · Cambodia.
  1. 1Signal widget: network generation and destination, always visible.
  2. 2Five bars, zero ambiguity about what you're connected to.
Language
Deutsch日本語Français
Language picker on Developers · Cambodia — Deutsch, 日本語, Français: 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.
Speed test
210Mbps
5G · Cambodia · 70 ms
Illustrative speed readout on Developers · Cambodia: 210 Mbps, 70 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.
eiffel tower in paris framed by lush greenery — Developers · Cambodia: The viewpoint at golden hour: livestream the sunset to everyone back home.
Developers · Cambodia: The viewpoint at golden hour: livestream the sunset to everyone back home.
Rene Terp — Developers · Cambodia: Lost in the medina, found by GPS: the blue dot never lies.
Developers · Cambodia: Lost in the medina, found by GPS: the blue dot never lies.
Alexander Grey — Developers · Cambodia: Duty-free browsing: price-checked against home before buying.
Developers · Cambodia: Duty-free browsing: price-checked against home before buying.
a woman with headset inside a gray cubicle — Developers · Cambodia: Currency exchange, skipped: the phone pays at the real rate.
Developers · Cambodia: Currency exchange, skipped: the phone pays at the real rate.
aerial view from airplane with blue wing — Developers · Cambodia: The departure board flips: gate found, lounge located, all on the eSIM.
Developers · Cambodia: The departure board flips: gate found, lounge located, all on the eSIM.
Emiliano Rodríguez — Developers · Cambodia: Rain or shine, the connection holds — weather doesn't throttle data.
Developers · Cambodia: Rain or shine, the connection holds — weather doesn't throttle data.
Acey Ramirez — Developers · Cambodia: Downtown, connected: the eSIM finds the fastest local network on its own.
Developers · Cambodia: Downtown, connected: the eSIM finds the fastest local network on its own.
man drinking coffee while working on his laptop — Developers · Cambodia: Old town, new tricks: translation apps working in real time.
Developers · Cambodia: Old town, new tricks: translation apps working in real time.
bright airport terminal with docked airplane view — Developers · Cambodia: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
Developers · Cambodia: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
Gaspar Zaldo — Developers · Cambodia: Night markets and late trains — connected the whole way through.
Developers · Cambodia: Night markets and late trains — connected the whole way through.
teddy bear sitting atop luggage left in airport — Developers · Cambodia: One curl call provisions a Cambodia eSIM — 200 OK in milliseconds.
Developers · Cambodia: One curl call provisions a Cambodia eSIM — 200 OK in milliseconds.
busy airport terminal with travelers and luggage — Developers · Cambodia: Family group chat: location shared, dinner plans settled in minutes.
Developers · Cambodia: Family group chat: location shared, dinner plans settled in minutes.
teenagers walking out of sea — Developers · Cambodia: Coast roads and country lanes — the map keeps up wherever you roam.
Developers · Cambodia: Coast roads and country lanes — the map keeps up wherever you roam.
ticino — Developers · Cambodia: City lights after dark — the eSIM doesn't care what time it is.
Developers · Cambodia: City lights after dark — the eSIM doesn't care what time it is.
tourists at the eiffel tower in paris daytime view — Developers · Cambodia: The docs ship with runnable examples, not pseudocode.
Developers · Cambodia: The docs ship with runnable examples, not pseudocode.
woman hiking on hill — Developers · Cambodia: SDKs, a CLI, and an MCP server — the developer surface, complete.
Developers · Cambodia: SDKs, a CLI, and an MCP server — the developer surface, complete.
breathtaking summer view of santorini s iconic architecture — Developers · Cambodia: The group chat stays live across every border you cross.
Developers · Cambodia: The group chat stays live across every border you cross.
woman working on laptop in outdoor cafe setting — Developers · Cambodia: Webhooks tell you when data runs low, plans expire, top-ups land.
Developers · Cambodia: Webhooks tell you when data runs low, plans expire, top-ups land.
an empty alley near the ocean — Developers · Cambodia: Trailheads and lookouts: offline maps downloaded, just in case.
Developers · Cambodia: Trailheads and lookouts: offline maps downloaded, just in case.
woman doing paperwork — Developers · Cambodia: The long layover: streaming, working and messaging, all covered.
Developers · Cambodia: The long layover: streaming, working and messaging, all covered.

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. Pick your plan
    • Choose data for your trip length — 5 GB covers a long weekend, 20 GB a fortnight, 50 GB or Unlimited a month of heavy use.
    • Checkout takes about two minutes through the secure Amazon Pay checkout.
  2. Scan the QR code
    • Your eSIM arrives instantly. Open your phone camera, scan, and the plan installs itself.
    • No store visit, no plastic SIM, no waiting for the post.
  3. Land connected
    • Turn on data roaming for the eSIM line when you land — you're online before baggage claim.
    • The eSIM finds the local partner network automatically.

Explainer

Good to know

  • Set a data alert at 80% so a top-up never surprises you mid-trip.
  • Download offline maps for your destination — they save data and work in dead zones.
  • Charge your phone before long travel days; weak signal areas drain batteries faster.
  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.
  • WhatsApp, iMessage and FaceTime keep your existing number on a data eSIM — no need to tell anyone a new number.
  • Buy and install your eSIM before departure — airport Wi-Fi is the worst place to set up connectivity.

These are the details that separate a smooth trip from a stressful one — small, unglamorous, and worth more than any feature list.

Explainer

Why travelers switch

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

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

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

See the math

Cambodia, visualized.

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. Gigabytes translated into hours — the Developers · Cambodia usage guide.
Plan comparison matrixEvery plan for Cambodia — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Cambodia.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 · Cambodia: 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 last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data2The remote worker
Size data for video calls and hotspotting with confidence.
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. If you recognize yourself here, the tool will pay for its click.
How esimgomobile Developers worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Enter your detailsTrip, data needs, destination. The tool does the math.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.4Open the toolNo account needed — it loads instantly in your browser.
Tool walkthrough. Every tool on esimgomobile follows the same honest pattern: input, math, answer.
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.2Pick your planChoose data for your trip — checkout takes about two minutes.3Land connectedSwitch the line on when you arrive — online before baggage claim.
Three-step setup. Three steps, about two minutes — the Developers · Cambodia ritual, no store visit.
Network at a glanceCoverage facts for CambodiaNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Cambodiaesimgomobile 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.
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.Hotspot includedShare with your laptop or tablet at no extra cost.5G where availableFastest local partner network, selected automatically.One-tap top-upMore data in seconds — no new QR code.6 languagesThe app speaks your language, wherever you're from.
Included with every plan. From 5 GB to Unlimited, the inclusions don't shrink.
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.
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.
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.
esimgomobile Developers: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Private by designyour inputs stay in your browserShares wellsend the answer to travel companionsAlways currentreflects live plans and coverageInstant resultsno waiting, no signupMobile friendlyworks on the phone in your handIllustrative profile based on tool design — not measured telemetry.
Capability profile. Ranked by what travelers notice first, not by marketing priority.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Download offline mapsThey save data and work in dead zones.2Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.3Set an 80% alertA top-up should never surprise you mid-trip.4Install before you flyAirport Wi-Fi is the worst place to set up connectivity.
Pro tips. Four habits for smooth trips — pro tips for Developers · Cambodia.

Your Cambodia 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