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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 Cyprus

Using developers in Cyprus? You are on the local edition — key facts for Cyprus (capital Nicosia, dial code +357) are below. esimgomobile plans for Cyprus are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalNicosia
Dial code+357
CurrencyEuro (EUR)
Time zoneUTC+2
Main languagesGreek, Turkish

Plans are live — see plans and pricing.

The experience

esimgomobile in action.

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

esimgomobile.com
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"CY"}'
200 OK · 168 ms
REST API behind Developers · Cyprus: issue eSIMs programmatically — 200 OK in milliseconds.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
esimgomobile.com
Checkout
Atlas 5GB — Cyprustotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · Cyprus: Atlas 5GB, 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.
Radubradu
“The Cyprus number saved me at the rental counter — they called, I answered.”
Omar H.Verified traveler · Cyprus
Traveler review for Developers · Cyprus: “The Cyprus number saved me at the rental counter — they called, I answered.” — Omar H..
  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 · Cyprus — 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.
eSIM plan
Atlas 5GB5 GB · 30 days
Cyprus
Install eSIM
Atlas 5GB on Developers · Cyprus — 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.
esimgomobile.com
close up shot of black microphone and headphones
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.
Install
1 Scan2 Add3 Go
The Developers · Cyprus 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.
Why travelers pick it
  • Instant QR install
  • Keep WhatsApp number
  • Hotspot included
Why travelers pick Developers · Cyprus: Instant QR install, Keep WhatsApp number, Hotspot included.
  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
Plans for Cyprus
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · Cyprus: 5GB, 20GB, 50GB and Unlimited — pick by trip, not 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.
Speed test
488Mbps
5G · Cyprus · 78 ms
Illustrative speed readout on Developers · Cyprus: 488 Mbps, 78 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.
Language
Deutsch日本語Français
Language picker on Developers · Cyprus — Deutsch, 日本語, Français: 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.
Virtual number
+1 205 721 1798
Routes toCyprus
SMS + voiceEnabled
Your second line on Developers · Cyprus: +1 205 721 1798 — 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.
Cyprus · 5G
Signal widget on Developers · Cyprus: network generation and place, always visible.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
people sitting on beach during sunset
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · Cyprus: 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.
Tele Agent transcript
What happens when my data runs out in Cyprus?
You get a heads-up at 80%, then one-tap top-up. No roaming-bill surprises in Cyprus.
Tele Agent transcript on Developers · Cyprus: 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.
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Cyprus
The honest comparison on Developers · Cyprus: one prepaid eSIM price versus carrier roaming.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Cyprus · coverage
5 carriers · automatic selection
Coverage map on Developers · Cyprus: 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.
white concrete buildings near the sea
Your Cyprus number is waiting.
Get your eSIM
Live now · no waitlist
“Your Cyprus number is waiting.” — the CTA card on Developers · Cyprus: plans live now, no waitlist.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
esimgomobile.com
Dashboard
Active eSIMs3
Data left20 GB
Current cityCyprus
Web dashboard on Developers · Cyprus: every eSIM, every trip, 20 GB left — one screen.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
eSIM installedYour Cyprus plan is ready.
Push · just now
Push notification on Developers · Cyprus: 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.
eiffel tower in worm hole view — Developers · Cyprus: Sandbox first: test provisioning without spending a cent.
Developers · Cyprus: Sandbox first: test provisioning without spending a cent.
smoothie on top of white laptop computer — Developers · Cyprus: Border crossings without the paperwork shuffle: ID photos stored on the phone.
Developers · Cyprus: Border crossings without the paperwork shuffle: ID photos stored on the phone.
commercial buildings — Developers · Cyprus: Duty-free browsing: price-checked against home before buying.
Developers · Cyprus: Duty-free browsing: price-checked against home before buying.
people on a video call — Developers · Cyprus: The viewpoint at golden hour: livestream the sunset to everyone back home.
Developers · Cyprus: The viewpoint at golden hour: livestream the sunset to everyone back home.
Marcus L. — Developers · Cyprus: The status page is public — uptime you can verify, not claim.
Developers · Cyprus: The status page is public — uptime you can verify, not claim.
hiker expressing satisfaction after climbing a mountain — Developers · Cyprus: Golden hour, fully online — photo backups upload before dinner.
Developers · Cyprus: Golden hour, fully online — photo backups upload before dinner.
people having a toast — Developers · Cyprus: The group chat stays live across every border you cross.
Developers · Cyprus: The group chat stays live across every border you cross.
person using gray laptop — Developers · Cyprus: Souvenir hunting with live currency conversion in your pocket.
Developers · Cyprus: Souvenir hunting with live currency conversion in your pocket.
downtown in the evening — Developers · Cyprus: The conference badge: QR ticket scanned, session schedule synced.
Developers · Cyprus: The conference badge: QR ticket scanned, session schedule synced.
greek town by sea — Developers · Cyprus: The food tour: every recommendation looked up on the spot.
Developers · Cyprus: The food tour: every recommendation looked up on the spot.
Alexander Grey — Developers · Cyprus: Night markets and late trains — connected the whole way through.
Developers · Cyprus: Night markets and late trains — connected the whole way through.
a man and a person sitting on the beach — Developers · Cyprus: Harbor views with full bars: coverage where travelers actually go.
Developers · Cyprus: Harbor views with full bars: coverage where travelers actually go.
Franco Monsalvo — Developers · Cyprus: The welcome home: eSIM deleted in one tap, no contract to cancel.
Developers · Cyprus: The welcome home: eSIM deleted in one tap, no contract to cancel.
woman walking on pathway while strolling luggage — Developers · Cyprus: The night bus: entertainment downloaded, messages queued, rest easy.
Developers · Cyprus: The night bus: entertainment downloaded, messages queued, rest easy.
Asad Photo Maldives — Developers · Cyprus: The departure board flips: gate found, lounge located, all on the eSIM.
Developers · Cyprus: The departure board flips: gate found, lounge located, all on the eSIM.
Chanita Sykes — Developers · Cyprus: Street level: navigation, rideshares and reviews, all instant.
Developers · Cyprus: Street level: navigation, rideshares and reviews, all instant.
scenic winter view of paris with eiffel tower — Developers · Cyprus: Coworking abroad: laptop tethered, calls crisp, deadlines met.
Developers · Cyprus: Coworking abroad: laptop tethered, calls crisp, deadlines met.
men s blue leather jacket and brown backpack — Developers · Cyprus: Every endpoint returns the same shape — learn one, know them all.
Developers · Cyprus: Every endpoint returns the same shape — learn one, know them all.
hand holding smartphone with greenery in office — Developers · Cyprus: The business trip: client deck synced, video call joined from the taxi.
Developers · Cyprus: The business trip: client deck synced, video call joined from the taxi.
a person walking on a trail in the mountains — Developers · Cyprus: The red-eye recovery: hotel early-check-in arranged mid-flight.
Developers · Cyprus: The red-eye recovery: hotel early-check-in arranged mid-flight.

Explainer

esimgomobile Developers: the full picture

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

The short version: prepaid travel eSIMs across 195 destinations, installed by QR code in two minutes, managed from a dashboard, with an AI agent on call when you need a human-style answer fast.

The long version is the rest of this page — plans, mechanics, edge cases and honest trade-offs, written the way we'd explain it to a friend.

Explainer

How it works, step by step

  1. 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

  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.
  • Set a data alert at 80% so a top-up never surprises you mid-trip.
  • Check that your phone is carrier-unlocked before you buy any eSIM — locked phones can't add one.
  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.
  • WhatsApp, iMessage and FaceTime keep your existing number on a data eSIM — no need to tell anyone a new number.
  • Save your eSIM QR code somewhere safe (email it to yourself) in case you switch phones mid-trip.

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.

Charts & explainers

The numbers behind Cyprus.

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 · Cyprus usage guide.
Network at a glanceCoverage facts for CyprusNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Cyprusesimgomobile 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. Cyprus connects to the fastest available local partner network automatically.
Plan comparison matrixEvery plan for Cyprus — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Cyprus.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. Weekend sips, fortnight data, work-month gulps, or unlimited — pick by trip shape.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
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.
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.1Land connectedSwitch the line on when you arrive — online before baggage claim.2Scan the QR codeThe eSIM installs straight onto your phone. No store, no plastic SIM.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 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 last-minute flyer
Answer in minutes, eSIM installed before boarding.
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.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.Keep your WhatsAppYour existing number keeps working on the data line.24/7 supportReal humans plus the Tele Agent, around the clock.6 languagesThe app speaks your language, wherever you're from.Hotspot includedShare with your laptop or tablet at no extra cost.One-tap top-upMore data in seconds — no new QR code.5G where availableFastest local partner network, selected automatically.
Included with every plan. Six things ship with every plan — the Developers · Cyprus baseline, generous on purpose.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Screenshot bookingsHotel address & confirmations, available with no signal.2Check unlock statusCarrier-locked phones can't add an eSIM — verify first.3Set an 80% alertA top-up should never surprise you mid-trip.4Download offline mapsThey save data and work in dead zones.
Pro tips. Four habits for smooth trips — pro tips for Developers · Cyprus.
esimgomobile Developers: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Always currentreflects live plans and coverageInstant resultsno waiting, no signupShares wellsend the answer to travel companionsPrivate by designyour inputs stay in your browserMobile friendlyworks on the phone in your handIllustrative profile based on tool design — not measured telemetry.
Capability profile. Capabilities measured by traveler value, not feature count.
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.2Apply itJump straight to the plan, setting or page it points to.3Get the answerClear result with next steps — save it or act on it.4Enter your detailsTrip, data needs, destination. The tool does the math.
Tool walkthrough. Developers · Cyprus, demystified: open, enter, answer, act.

Take Cyprus with you, connected

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