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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 Greece

Using developers in Greece? You are on the local edition — key facts for Greece (capital Athens, dial code +30) are below. esimgomobile plans for Greece are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalAthens
Dial code+30
CurrencyEuro (EUR)
Time zoneUTC+2
Main languagesGreek

Plans are live — see plans and pricing.

Product tour

The product, up close.

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

esimgomobile.com
woman using a laptop in a restaurant
esimgomobile Developers
Travel guides · 8 min read
From the blog: “esimgomobile Developers” — travel guides in about eight minutes.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
Tele Agent transcript
Will my phone work in Greece?
If it's carrier-unlocked and eSIM-capable, yes. I checked Greece bands — you're covered.
Tele Agent transcript on Developers · Greece: real question, specific answer.
  1. 1A real support transcript: the question, then the specific answer.
  2. 2This is what 'AI support' actually looks like in practice.
Hipster with a beard and sunglasses in a city square holding a smartphone.
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · Greece: pick a plan, scan the QR, land online.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
esimgomobile.com
Checkout
Atlas 20GB — Greecetotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · Greece: Atlas 20GB, full price up front, no fine print.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
Network
5G
Greece connected
Network widget for Developers · Greece: 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 50GB50 GB · 60 days
Greece
Install eSIM
Atlas 50GB on Developers · Greece — 50 GB · 60 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.
Speed test
750Mbps
5G · Greece · 27 ms
Illustrative speed readout on Developers · Greece: 750 Mbps, 27 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.
32%
data left
Usage ring on Developers · Greece — 32% 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.
white concrete buildings
Your Greece number is waiting.
Get your eSIM
Live now · no waitlist
“Your Greece number is waiting.” — the CTA card on Developers · Greece: 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.
Recent speeds
Lisbon407 Mbps
Paris401 Mbps
Paris608 Mbps
Recent speeds for Developers · Greece — Lisbon, Paris, Paris: 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.com
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"GR"}'
200 OK · 73 ms
REST API behind Developers · Greece: 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.
Install
1 Scan2 Add3 Go
The Developers · Greece install: QR in three steps — scan, add, go, about two minutes.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
Why travelers pick it
  • 5G where available
  • 24/7 support
  • Instant QR install
Why travelers pick Developers · Greece: 5G where available, 24/7 support, Instant QR install.
  1. 1The roaming math, made visible: one price versus per-day carrier fees.
  2. 2This is the comparison most travelers never see until the bill.
My eSIM
87%10 GB left
Days left16
Top up+10 GB
Data dashboard on Developers · Greece: 87% remaining, days left, top-up one tap away.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Support
How does Developers · Greece work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · Greece: 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.
Greece · coverage
5 carriers · automatic selection
Coverage map on Developers · Greece: 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 20GB
20 GB · 30 days
Greece
Atlas 20GB — 20 GB · 30 days, prepaid and ready on Developers · Greece.
  1. 1The plan chip: name, allowance and destination in one line.
  2. 2Everything you need to confirm you're on the right plan.
esimgomobile.com
Plans for Greece
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · Greece: 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.
195
destinations live
launch fact
Launch fact behind Developers · Greece: 195 destinations live — a fixed figure, not live telemetry.
  1. 1The roaming math, made visible: one price versus per-day carrier fees.
  2. 2This is the comparison most travelers never see until the bill.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · Greece — 195 destinations live, 31 free tools, $8 entry monthly plan: numbers we publish and stand behind.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
Zaiwizi — Developers · Greece: City lights after dark — the eSIM doesn't care what time it is.
Developers · Greece: City lights after dark — the eSIM doesn't care what time it is.
clouds over palace — Developers · Greece: The connected trip: maps, messages and translation, all on one eSIM.
Developers · Greece: The connected trip: maps, messages and translation, all on one eSIM.
hiker admiring majestic albanian mountains — Developers · Greece: Coast roads and country lanes — the map keeps up wherever you roam.
Developers · Greece: Coast roads and country lanes — the map keeps up wherever you roam.
modern smartphone triple camera close up shot — Developers · Greece: Island time, online time: ferries, beaches and full signal.
Developers · Greece: Island time, online time: ferries, beaches and full signal.
stone bridge over river in megalopolis — Developers · Greece: The last night: photo album backed up, memories safe before wheels-up.
Developers · Greece: The last night: photo album backed up, memories safe before wheels-up.
hiker with backpack exploring mountain view — Developers · Greece: Street level: navigation, rideshares and reviews, all instant.
Developers · Greece: Street level: navigation, rideshares and reviews, all instant.
Roderick Salatan — Developers · Greece: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Developers · Greece: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
couple walking down the stairs in santorini greece — Developers · Greece: Trailheads and lookouts: offline maps downloaded, just in case.
Developers · Greece: Trailheads and lookouts: offline maps downloaded, just in case.
a woman waving her hand while looking at the screen of the laptop — Developers · Greece: The red-eye recovery: hotel early-check-in arranged mid-flight.
Developers · Greece: The red-eye recovery: hotel early-check-in arranged mid-flight.
city skyline — Developers · Greece: The API issues eSIMs the way your app issues everything else — over HTTPS.
Developers · Greece: The API issues eSIMs the way your app issues everything else — over HTTPS.
Erik Mclean — Developers · Greece: Coworking abroad: laptop tethered, calls crisp, deadlines met.
Developers · Greece: Coworking abroad: laptop tethered, calls crisp, deadlines met.
the view of a white building on a hillside — Developers · Greece: Every endpoint returns the same shape — learn one, know them all.
Developers · Greece: Every endpoint returns the same shape — learn one, know them all.
Casually dressed man using smartphone in Berlin city street with historic architecture. — Developers · Greece: The business trip: client deck synced, video call joined from the taxi.
Developers · Greece: The business trip: client deck synced, video call joined from the taxi.
dome of church on sea coast in greece — Developers · Greece: Rate limits are generous and documented — no surprise 429s.
Developers · Greece: Rate limits are generous and documented — no surprise 429s.
a woman inside a restaurant using a laptop — Developers · Greece: Night markets and late trains — connected the whole way through.
Developers · Greece: Night markets and late trains — connected the whole way through.
turned on macbook — Developers · Greece: The welcome home: eSIM deleted in one tap, no contract to cancel.
Developers · Greece: The welcome home: eSIM deleted in one tap, no contract to cancel.
empire state building nyc — Developers · Greece: The group chat stays live across every border you cross.
Developers · Greece: The group chat stays live across every border you cross.
woman with red cap talking on laptop — Developers · Greece: The docs ship with runnable examples, not pseudocode.
Developers · Greece: The docs ship with runnable examples, not pseudocode.
view of airplane wing and clouds from cabin — Developers · Greece: The window seat office: emails sent somewhere over the ocean.
Developers · Greece: The window seat office: emails sent somewhere over the ocean.
Elsie Soto — Developers · Greece: Museum afternoons with audio guides streaming, not buffering.
Developers · Greece: Museum afternoons with audio guides streaming, not buffering.

Explainer

esimgomobile Developers: the full picture

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.

Everything on this page exists to answer one question well: how does esimgomobile fit into your trip? The sections below go deep so you never need a second tab.

Explainer

How it works, step by step

  1. 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

  • 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.
  • Download offline maps for your destination — they save data and work in dead zones.
  • Check that your phone is carrier-unlocked before you buy any eSIM — locked phones can't add one.
  • Turn off auto-play on social apps before you fly; it quietly eats roaming data.
  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.

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.

The data room

The numbers behind Greece.

esimgomobile Developers — data dashboard

The product's headline numbers, switchable by dataset.

195
destinations live
global footprint
4
Atlas plans
prepaid, no contracts
~2 min
typical install
QR scan to online
6
app languages
EN ES FR DE PT JA
Atlas 5GB: 5 GB over 30 days — Weekend breaks & light useAtlas 5GB 5 GBAtlas 20GB: 20 GB over 30 days — Two-week trips & daily useAtlas 20GB 20 GBAtlas 50GB: 50 GB over 60 days — Remote work & hotspottingAtlas 50GB 50 GBAtlas Unlimited: Unlimited over 30 days — Heavy use, zero meteringAtlas Unlimited Unlimited
Atlas 5GB: 30-day validityAtlas 5GB 30 daysAtlas 20GB: 30-day validityAtlas 20GB 30 daysAtlas 50GB: 60-day validityAtlas 50GB 60 daysAtlas Unlimited: 30-day validityAtlas Unlimited 30 days
Illustrative — D1: 100% of maxIllustrative — D10: 70% of maxIllustrative — D20: 42% of maxIllustrative — D30: 12% of maxDay 1Day 10Day 20Day 30IllustrativeIllustrative 20 GB burn-down at moderate use.

Hover any bar or point for its exact value. Tabs switch datasets — everything on this panel is computed from live product data unless labeled illustrative.

esimgomobile Developers — data dashboard. Plan allowances, validity windows and a typical usage curve for esimgomobile Developers — hover for exact values.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
How fast is setup?
About two minutes: plan, QR scan, done.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
Does hotspot work?
Yes — share your connection with laptop or tablet.
What if data runs out?
80% alert, then one-tap top-up. No bill shock.
FAQ at a glance. Short answers, no sales pitch — the questions first, always.
How esimgomobile Developers worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Apply itJump straight to the plan, setting or page it points to.2Get the answerClear result with next steps — save it or act on it.3Enter your detailsTrip, data needs, destination. The tool does the math.4Open the toolNo account needed — it loads instantly in your browser.
Tool walkthrough. Developers · Greece, demystified: open, enter, answer, act.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Download offline mapsThey save data and work in dead zones.2Screenshot bookingsHotel address & confirmations, available with no signal.3Set an 80% alertA top-up should never surprise you mid-trip.4Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.
Pro tips. The small things that separate smooth trips from stressful ones.
Network at a glanceCoverage facts for GreeceNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Greeceesimgomobile 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.Hotspot includedShare with your laptop or tablet at no extra cost.5G where availableFastest local partner network, selected automatically.6 languagesThe app speaks your language, wherever you're from.24/7 supportReal humans plus the Tele Agent, around the clock.One-tap top-upMore data in seconds — no new QR code.Keep your WhatsAppYour existing number keeps working on the data line.
Included with every plan. Six things ship with every plan — the Developers · Greece baseline, generous on purpose.
Plan comparison matrixEvery plan for Greece — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Greece.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 · Greece: 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 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. If you recognize yourself here, the tool will pay for its click.
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 · Greece usage guide.
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 signupAlways currentreflects live plans and coverageShares wellsend the answer to travel companionsPrivate by designyour inputs stay in your browserIllustrative profile based on tool design — not measured telemetry.
Capability profile. Ranked by what travelers notice first, not by marketing priority.
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.1Land connectedSwitch the line on when you arrive — online before baggage claim.2Pick your planChoose data for your trip — checkout takes about two minutes.3Scan the QR codeThe eSIM installs straight onto your phone. No store, no plastic SIM.
Three-step setup. Three steps, about two minutes — the Developers · Greece ritual, no store visit.

Your Greece 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